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Re: [GMCnet] starting the engine [message #322093 is a reply to message #322088] Mon, 14 August 2017 15:20 Go to previous messageGo to next message
Keith V is currently offline  Keith V   United States
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
Senior Member
if you move the throttle by hand at the carb ( where the throttle cable attaches ) the choke butterfly should close.

there are a bunch of linkages involved that may or may not be working as expected.


On the passenger side of the carb is the choke spring that is supposed to move the butterfly ( flapper ), but there can be a dozen reasons it doesn't.

The simplest is it's mis adjusted. There are 3 screws on the face that hold a black plastic piece in place. Rotating that adjusts the choke.

With the engine cold you rotate it till it just closes, then snug up the screws.


If your choke system is working it will open as the engine warms up.

Note that the choke will NOT open until you blip the throttle as the mechanism keeps it in place. If you grew up in the north with carberated cars you will remember them racing untill they warmed up and you kicked the throttle.


The gas filter is screwed into the front of the carb, theres a metal tube that snakes around the radiator hose and connects to the carb. The filter is inside there.

It's usually on too tight and it will leak gas when you open it. so have some paper towels ready. Use 2 wrenches, 1 to hold the filter and the second to loosen the gas line, then loosen the filter.

You have to bend the gas line a little to get it all apart.

The filter has a right and wrong way to go in, I always forget which is right, so check the archives!

________________________________
From: Gmclist on behalf of kelly stockwell
Sent: Monday, August 14, 2017 2:45:28 PM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] starting the engine

Ok, so i'm right about what the choke is, and that the green thing is in a vacuum line

Now, how is the pedal going to the floor (once) supposed to close the choke? I can move things but I don't know what should move together, what
should move the lever that moves the choke flapper?

I'm not having luck looking at images online for what moves what plates.

And finally, there's supposed to be a tiny gas filter in the carb, looks like a small gold microphone.

how do i get to/change that?

thanks
kelly
--
1978 Kingsley
Putney VT

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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
Re: [GMCnet] starting the engine [message #322094 is a reply to message #322088] Mon, 14 August 2017 15:34 Go to previous messageGo to next message
77Royale   United States
Messages: 461
Registered: June 2014
Location: Mid Michigan
Karma: 6
Senior Member
Fuel filter change video. Easier to watch than type. Use line wrenches. so you dont strip the fuel line. ALWAYS put a second wrench on the filter housing so you dont damage that attempting to loosen the fuel line.

https://www.youtube.com/watch?v=WK0sqMI6mMs




When you push the gas pedal to the floor the choke plate should snap closed. You will see the plate close up and probably hear it. This is on a stone cold engine... If on a cold engine that choke plate is not nearly all the way closed up, it may need some adjustment. I recall that coach came from Meeshigun. Climate being somewhat similar I would be surprised if it wasn't correctly set up.


77 Royale, Rear Dry Bath. 403, 3.55 Final Drive, Lenzi goodies, Patterson carb and dizzy. Mid Michigan
Re: [GMCnet] starting the engine [message #322097 is a reply to message #322088] Mon, 14 August 2017 16:21 Go to previous messageGo to next message
k2gkk is currently offline  k2gkk   United States
Messages: 4452
Registered: November 2009
Karma: -8
Senior Member
Pushing the accelerator pedal to the floor SLOWLY when the engine is cold, frees up the choke activation spring to allow the butterfly to close.


D C "Mac" Macdonald
Amateur Radio K2GKK
Since 30 November '53
USAF and FAA, Retired
Member GMCMI & Classics
Oklahoma City, OK
"The Money Pit"
TZE166V101966
'76 ex-Palm Beach
k2gkk + hotmail dot com


________________________________
From: Gmclist on behalf of kelly stockwell
Sent: Monday, August 14, 2017 14:45
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] starting the engine

Ok, so i'm right about what the choke is, and that the green thing is in a vacuum line

Now, how is the pedal going to the floor (once) supposed to close the choke? I can move things but I don't know what should move together, what
should move the lever that moves the choke flapper?

I'm not having luck looking at images online for what moves what plates.

And finally, there's supposed to be a tiny gas filter in the carb, looks like a small gold microphone.

how do i get to/change that?

thanks
kelly
--
1978 Kingsley
Putney VT

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Re: [GMCnet] starting the engine [message #322104 is a reply to message #322093] Mon, 14 August 2017 18:00 Go to previous messageGo to next message
kstockwell is currently offline  kstockwell   United States
Messages: 367
Registered: May 2016
Location: Putney VT
Karma: 4
Senior Member
Keith
Nothing on top of the carb (butterfly) closed. it stayed partly open. By the throttle you mean on the driver's side the chain. That's what moved when I stepped on the pedal. A flapper below the choke did move with the throttle. It could be so out of wack it doesnt move?

On the passenger side, it seemed like nothing connected the flapper of the choke to any of the parts I could move with my hand. I can move the choke on the passenger side and moving the choke itself.

I'm not sure I'm fully explaining it right.

It did start right up 1/2 hour after I first started it; so it runs fine and I believe the choke is not closing, it's staying partly open.


I'll look for that fuel filter, I wasn't sure if it was in the carburetor or outside it. Sounds like it's outside it and I should follow the metal fuel lines.

thanks for the continued help! I had an RX-7 with a manual choke I pulled out, it would pop back in once it was warmed up. Manual meant I determined when to use it.
kelly



[quote title=Keith V wrote on Mon, 14 August 2017 16:20]if you move the throttle by hand at the carb ( where the throttle cable attaches ) the choke butterfly should close.

there are a bunch of linkages involved that may or may not be working as expected.


On the passenger side of the carb is the choke spring that is supposed to move the butterfly ( flapper ), but there can be a dozen reasons it doesn't.

The simplest is it's mis adjusted. There are 3 screws on the face that hold a black plastic piece in place. Rotating that adjusts the choke.

With the engine cold you rotate it till it just closes, then snug up the screws.


If your choke system is working it will open as the engine warms up.

Note that the choke will NOT open until you blip the throttle as the mechanism keeps it in place. If you grew up in the north with carberated cars you will remember them racing untill they warmed up and you kicked the throttle.


The gas filter is screwed into the front of the carb, theres a metal tube that snakes around the radiator hose and connects to the carb. The filter is inside there.

It's usually on too tight and it will leak gas when you open it. so have some paper towels ready. Use 2 wrenches, 1 to hold the filter and the second to loosen the gas line, then loosen the filter.

You have to bend the gas line a little to get it all apart.

The filter has a right and wrong way to go in, I always forget which is right, so check the archives!

________________________________
From: Gmclist on behalf of kelly stockwell
Sent: Monday, August 14, 2017 2:45:28 PM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] starting the engine

Ok, so i'm right about what the choke is, and that the green thing is in a vacuum line

Now, how is the pedal going to the floor (once) supposed to close the choke? I can move things but I don't know what should move together, what
should move the lever that moves the choke flapper?

I'm not having luck looking at images online for what moves what plates.

And finally, there's supposed to be a tiny gas filter in the carb, looks like a small gold microphone.

how do i get to/change that?

thanks
kelly
--
1978 Kingsley
Putney VT

_______________________________________________


1978 Kingsley Putney VT
Re: [GMCnet] starting the engine [message #322105 is a reply to message #322097] Mon, 14 August 2017 18:02 Go to previous messageGo to next message
kstockwell is currently offline  kstockwell   United States
Messages: 367
Registered: May 2016
Location: Putney VT
Karma: 4
Senior Member
Mac
I saw nothing move when I first pushed the pedal down.

k2gkk wrote on Mon, 14 August 2017 17:21
Pushing the accelerator pedal to the floor SLOWLY when the engine is cold, frees up the choke activation spring to allow the butterfly to close.


D C "Mac" Macdonald
Amateur Radio K2GKK
Since 30 November '53
USAF and FAA, Retired
Member GMCMI & Classics
Oklahoma City, OK
"The Money Pit"
TZE166V101966
'76 ex-Palm Beach
k2gkk + hotmail dot com


________________________________
From: Gmclist on behalf of kelly stockwell
Sent: Monday, August 14, 2017 14:45
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] starting the engine

Ok, so i'm right about what the choke is, and that the green thing is in a vacuum line

Now, how is the pedal going to the floor (once) supposed to close the choke? I can move things but I don't know what should move together, what
should move the lever that moves the choke flapper?

I'm not having luck looking at images online for what moves what plates.

And finally, there's supposed to be a tiny gas filter in the carb, looks like a small gold microphone.

how do i get to/change that?

thanks
kelly
--
1978 Kingsley
Putney VT

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1978 Kingsley Putney VT
Re: [GMCnet] starting the engine [message #322107 is a reply to message #322094] Mon, 14 August 2017 18:25 Go to previous messageGo to next message
kstockwell is currently offline  kstockwell   United States
Messages: 367
Registered: May 2016
Location: Putney VT
Karma: 4
Senior Member
thank you for the video link! Nothing snaps closed. What I need to figure out is what should be connected to what to make it snap closed. It doesn't move at all; like the link is gone

77Royale wrote on Mon, 14 August 2017 16:34
Fuel filter change video. Easier to watch than type. Use line wrenches. so you dont strip the fuel line. ALWAYS put a second wrench on the filter housing so you dont damage that attempting to loosen the fuel line.

https://www.youtube.com/watch?v=WK0sqMI6mMs




When you push the gas pedal to the floor the choke plate should snap closed. You will see the plate close up and probably hear it. This is on a stone cold engine... If on a cold engine that choke plate is not nearly all the way closed up, it may need some adjustment. I recall that coach came from Meeshigun. Climate being somewhat similar I would be surprised if it wasn't correctly set up.


1978 Kingsley Putney VT
Re: [GMCnet] starting the engine [message #322116 is a reply to message #322105] Mon, 14 August 2017 20:35 Go to previous messageGo to next message
k2gkk is currently offline  k2gkk   United States
Messages: 4452
Registered: November 2009
Karma: -8
Senior Member
I just know how it is supposed to work! Know nothing about how to fix it!


HAR!


Mac in OKC


________________________________
From: Gmclist on behalf of kelly stockwell
Sent: Monday, August 14, 2017 18:02
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] starting the engine

Mac
I saw nothing move when I first pushed the pedal down.

k2gkk wrote on Mon, 14 August 2017 17:21
> Pushing the accelerator pedal to the floor SLOWLY when the engine is cold, frees up the choke activation spring to allow the butterfly to close.
>
>
> D C "Mac" Macdonald
> Amateur Radio K2GKK
> Since 30 November '53
> USAF and FAA, Retired
> Member GMCMI & Classics
> Oklahoma City, OK
> "The Money Pit"
> TZE166V101966
> '76 ex-Palm Beach
> k2gkk + hotmail dot com


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Re: starting the engine [message #322128 is a reply to message #321702] Tue, 15 August 2017 08:44 Go to previous messageGo to next message
JohnL455 is currently offline  JohnL455   United States
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
Senior Member
1)From your picture the fresh air line to the choke stove looks kinked up top where it draws clean air from back of carb.
2) the hot side of the line coming from the manifold to the carb looks rusted. This means that the loop down in the manifold is probably rotted away.
3) this means the choke thermostat will not get proper heat signal causing the choke to not open properly
4) so-- because of this someone has probably loosened the 3 screws on the choke thermostat and de-adjusted the thermostat to the Lean side to circumvent the choke staying on.
The choke heat lines will need replacing, choke spring and housing cleaned, then re-adjusted
My arm chair diagnostics from the picture


John Lebetski
Woodstock, IL
77 Eleganza II
Re: [GMCnet] starting the engine [message #322129 is a reply to message #322116] Tue, 15 August 2017 08:43 Go to previous messageGo to next message
Keith V is currently offline  Keith V   United States
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
Senior Member
I think we're beyond what we can do remotely with pictures.

My guess / bet is that the choke is out of adjustment, maybe because the heater is rusted through...

You need to find someone local that can lay hands on it or send it to Dick Patterson, Or Jim B?

________________________________
From: Gmclist on behalf of D C _Mac_ Macdonald
Sent: Monday, August 14, 2017 8:35:36 PM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] starting the engine

I just know how it is supposed to work! Know nothing about how to fix it!


HAR!


Mac in OKC


________________________________
From: Gmclist on behalf of kelly stockwell
Sent: Monday, August 14, 2017 18:02
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] starting the engine

Mac
I saw nothing move when I first pushed the pedal down.

k2gkk wrote on Mon, 14 August 2017 17:21
> Pushing the accelerator pedal to the floor SLOWLY when the engine is cold, frees up the choke activation spring to allow the butterfly to close.
>
>
> D C "Mac" Macdonald
> Amateur Radio K2GKK
> Since 30 November '53
> USAF and FAA, Retired
> Member GMCMI & Classics
> Oklahoma City, OK
> "The Money Pit"
> TZE166V101966
> '76 ex-Palm Beach
> k2gkk + hotmail dot com


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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
Re: [GMCnet] starting the engine [message #322133 is a reply to message #322128] Tue, 15 August 2017 09:23 Go to previous messageGo to next message
bdub is currently offline  bdub   United States
Messages: 1578
Registered: February 2004
Location: Central Texas
Karma: 5
Senior Member

Here's some parts:
http://appliedgmc.com/search.itml?icQuery=choke

Actually, a modern electric choke would be nice and close off that choke
stove. Jim can supply those as well.

And, close off the carb warping, manifold cracking exhaust crossover
ports. haha One good upgrade deserves another.....

How far are you from New England RV / Mike Glover in Plaistow, NH?

bdub


On Tue, Aug 15, 2017 at 8:44 AM, John R. Lebetski wrote:

> 1)From your picture the fresh air line to the choke stove looks kinked up
> top where it draws clean air from back of carb.
> 2) the hot side of the line coming from the manifold to the carb looks
> rusted. This means that the loop down in the manifold is probably rotted
> away.
>
> 3) this means the choke thermostat will not get proper heat signal causing
> the choke to not open properly
> 4) so-- because of this someone has probably loosened the 3 screws on the
> choke thermostat and de-adjusted the thermostat to the Lean side to
> circumvent the choke staying on.
> The choke heat lines will need replacing, choke spring and housing
> cleaned, then re-adjusted
> My arm chair diagnostics from the picture
>
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bdub
'76 Palm Beach/Central Texas
www.bdub.net
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www.gmcmhregistry.com
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Re: starting the engine [message #322140 is a reply to message #321702] Tue, 15 August 2017 11:05 Go to previous messageGo to next message
jhbridges is currently offline  jhbridges   United States
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
Senior Member
Pressing the throttle on a cold non-running engine should result in the front (choke) plate closing. If it does not, investigate whay. With the three screws loose on the black round spring cover on the passenger side of the carb, rotating the black part with the throttle pressed and engine off should move the choke plate in either direction. If it dies, turn it until the plate >just< closes and tighten the three screws. This will be close to the correct setting. UIf the choke doesn't close, or binds, stop and figure put why and correct. Then set it again and try cranking the engine.
This assumes a stock setup with a 'stove pipe' running ffrom the stove on the manifold to the choke spring assembly. If you have a wire instead of a heat tube, the setup will be a bit different.

--johnny

--johnny


Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell
Re: [GMCnet] starting the engine [message #322182 is a reply to message #322133] Wed, 16 August 2017 06:14 Go to previous messageGo to next message
kstockwell is currently offline  kstockwell   United States
Messages: 367
Registered: May 2016
Location: Putney VT
Karma: 4
Senior Member
Again, thank you all. I realize it's hard to help diagnose with a photo or two. I have a friend who works on his cars willing to come take a look this weekend. The comments on the vac lines are interesting; I'll take a look at that and see if anything is rotted. The fact is it drives fine, and starts quickly when warmed up. So I'm hopeful it's just the choke out of wack. Last year when I posted here (or read here) about setting the choke with the pedal to the floor it began starting right away when cold. So it was working not too long ago.

I'm 2+ hours from Plaistow NH (through what I imagine is some crappy traffic- being from VT crappy traffic is probably not what anyone else would call it Smile. I know Mike is there and am grateful to have him nearby. So far I haven't talked to him or needed him.


What I really don't understand is how the choke plate should be connected to the bimetal spring contraption on the passenger side. The workings of the plate and the movement of the levers don't touch each other, but I don't know how they're supposed to.

Hopefully this weekend my friend and I can diagnose. For now I'm certainly not dead in the water. With the choke not working, what's the best way to cold start it? Stab the pedal down once or twice while cranking, and only crank for 10 seconds at a time?


-kelly


bdub wrote on Tue, 15 August 2017 10:23
Here's some parts:
http://appliedgmc.com/search.itml?icQuery=choke

Actually, a modern electric choke would be nice and close off that choke
stove. Jim can supply those as well.

And, close off the carb warping, manifold cracking exhaust crossover
ports. haha One good upgrade deserves another.....

How far are you from New England RV / Mike Glover in Plaistow, NH?

bdub


On Tue, Aug 15, 2017 at 8:44 AM, John R. Lebetski wrote:

> 1)From your picture the fresh air line to the choke stove looks kinked up
> top where it draws clean air from back of carb.
> 2) the hot side of the line coming from the manifold to the carb looks
> rusted. This means that the loop down in the manifold is probably rotted
> away.
>
> 3) this means the choke thermostat will not get proper heat signal causing
> the choke to not open properly
> 4) so-- because of this someone has probably loosened the 3 screws on the
> choke thermostat and de-adjusted the thermostat to the Lean side to
> circumvent the choke staying on.
> The choke heat lines will need replacing, choke spring and housing
> cleaned, then re-adjusted
> My arm chair diagnostics from the picture
>
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1978 Kingsley Putney VT
Re: [GMCnet] starting the engine [message #322183 is a reply to message #322182] Wed, 16 August 2017 06:18 Go to previous messageGo to next message
kstockwell is currently offline  kstockwell   United States
Messages: 367
Registered: May 2016
Location: Putney VT
Karma: 4
Senior Member
How does the electric choke work differently?

kelly


1978 Kingsley Putney VT
Re: [GMCnet] starting the engine [message #322185 is a reply to message #322183] Wed, 16 August 2017 07:03 Go to previous messageGo to next message
Richard Denney is currently offline  Richard Denney   United States
Messages: 920
Registered: April 2010
Karma: 9
Senior Member
The standard choke uses a thermostatic coil that winds up the choke shaft
when it is cold, and unwinds it when it is warm. It is heated using a choke
stove, which is a loop of tubing that projects down into the exhaust
crossover in the intake manifold. A tube is connected to it and to the side
of the choke thermostat housing, which is the bell-shaped projection out
the starboard side of the carburetor.

The choke stove can rot out, sending exhaust gas directly to the carb
thermostat.

An electric choke works one of two ways, but both ways replace the choke
stove in the intake manifold. The method I prefer uses a temperature sensor
that is clamped under an intake manifold bolt, and an actuator that mounts
in the thermostat housing to replace the coil. It pulls the choke off as
the engine warms up. Both methods need power from the ignition circuit to
pull off the choke as the engine warms.

Rick "who has been down this road" Denney

On Wed, Aug 16, 2017 at 6:24 AM kelly stockwell wrote:

> How does the electric choke work differently?
>
> kelly
> --
> 1978 Kingsley
> Putney VT
>
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--
Rick Denney
73 x-Glacier 230 "Jaws"
Off-list email to rick at rickdenney dot com
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Re: starting the engine [message #322186 is a reply to message #321702] Wed, 16 August 2017 07:27 Go to previous messageGo to next message
77Royale   United States
Messages: 461
Registered: June 2014
Location: Mid Michigan
Karma: 6
Senior Member
The choke plate has a small metal tab that protrudes through the passenger side of the carb. This tab fits loosely into a slot of the of end of the metal choke spring which is covered by a plastic cover. As the metal in the spring expands and collapses due to the hot and cold of the engine the spring will "tighten/wind up" with cold, and will loosen/unwind when it gets hot. The winding up or down of the spring is what moves the choke plate open or closed on the actual carb.

So with a cold engine, the spring is wound up and it forces the choke plate in the closed position. As heat is applied to the choke spring either through a choke stove/chimney tube with engine heat (which you have currently)or through an electrical connection (electric Choke)the choke plate will gradually open up. This takes a few minutes to do as the engine warms.

An electric choke is essentially the same as far as parts, but there is one wire which needs to go to 12V when the key is on. (Key on Hot) With an electric choke it does not matter if the engine is actually running, As long as the key is on the choke will warm up via electricity and will gradually open up. They are adjusted in the same manner as a non electric choke.

Why someone wants an electric choke? Perhaps the choke stove pipes are bad (mine were) You can cap off / block off the choke plate on the intake manifold and then run a single wire to key hot 12V and install the electric choke. It takes all of 10 minutes to install it.

They both work on the same principles.



That said. A hot engine when shut down will have the choke in the fully open position as it locks. To unlock the choke and get the butterfly plate to close one must push the gas pedal to the floor, This squirts a bit of gas in the carb, and also snaps shut the choke butterfly plate.

You loosen, not remove, the three slotted screws with small hold down plates on the choke housing and rotate the assembly toward the rear of the coach to adjust the choke to close more fully. Rotating it toward the front of the coach will open the choke more. This has to be done on a cold engine so the spring is fully wound up.. By adjusting we are talking rotating the housing a few degrees, or millimeters to get the butterfly plate fully closed, or very near fully closed. again on a cold engine.

Hope this helps.


77 Royale, Rear Dry Bath. 403, 3.55 Final Drive, Lenzi goodies, Patterson carb and dizzy. Mid Michigan
Re: [GMCnet] starting the engine [message #322187 is a reply to message #322183] Wed, 16 August 2017 07:19 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Kelly,

The 455 & 403 engines in our GMC's use a thermostatic choke so Google "Thermostatic choke" and you'll find heaps of info on how they
work.

Then Google "Electric choke" and you'll find out how they work.

Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of kelly stockwell
Sent: Wednesday, August 16, 2017 9:19 PM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] starting the engine

How does the electric choke work differently?

kelly
--
1978 Kingsley
Putney VT



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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] starting the engine [message #322189 is a reply to message #322187] Wed, 16 August 2017 08:16 Go to previous messageGo to next message
kstockwell is currently offline  kstockwell   United States
Messages: 367
Registered: May 2016
Location: Putney VT
Karma: 4
Senior Member
Thanks all!

now i understand "stove" from the link of parts Bill added.

Ok, i'll do some reading and check it out again, maybe adding photos of what's going on at the passenger side. I don't think I want to change to an electric choke, this one did work- thank you for the explanation.

cheers
kelly


1978 Kingsley Putney VT
Re: starting the engine [message #322228 is a reply to message #321702] Wed, 16 August 2017 19:17 Go to previous messageGo to next message
kstockwell is currently offline  kstockwell   United States
Messages: 367
Registered: May 2016
Location: Putney VT
Karma: 4
Senior Member
apologies if my questions are tiring

I think the comment about the stove being rusted out; and therefore my adjustment is way off sounds likely

I took some more pictures. How much do I need to remove to get to the stove?
I assume the U shaped stove item at Applied GMC is under the stove tube to choke. The pipe above looks rusty but feels solid.
Is this something I can do myself or should I enlist professional help? My next trip is August 28th, around a 4 hour drive to Maine. My only issue now is cold starting.

I'm still confused about how the choke plate should be moved by the other moving parts..
I took this video of me moving parts
https://youtu.be/mIWiPhpi1BQ

http://www.gmcmhphotos.com/photos/data/500/medium/IMG_24642.JPG
http://www.gmcmhphotos.com/photos/data/500/medium/IMG_24552.jpg


1978 Kingsley Putney VT
Re: starting the engine [message #322241 is a reply to message #321702] Thu, 17 August 2017 08:15 Go to previous messageGo to next message
jhbridges is currently offline  jhbridges   United States
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
Senior Member
After watching, I wonder if the spring is properly connected. (I also wonder if that's the correct carb - have you checked the number stamped/cast on the driver's side of the carb against the manual?)
Remove the three screws on the round black thing and pull it out - it is the temp spring which moved the choke plate. You should see in its housing a metal tab which is connected directly to the choke plate: Moving the tab should move the plate without any slack or hesitation. There should be a slot in the tab which ebngages the end of the spring to move the choke. If this is broken or not properly engaged, the choke will not work properly. When it is properly engaged, rotating the spring holder should also move the choke in either direction. When it does, turn it until thye choke just closes and then replace and tighten the three screws. You choke stove looks properl;y installed and should work. Your unloader diaphragm also looks properly hooked.

--johnny


Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell
Re: starting the engine [message #322249 is a reply to message #322241] Thu, 17 August 2017 10:11 Go to previous messageGo to previous message
kstockwell is currently offline  kstockwell   United States
Messages: 367
Registered: May 2016
Location: Putney VT
Karma: 4
Senior Member
Thank you Johnny, it also initially seemed to me like something was supposed to be connected but wasn't. Interesting comment on the right carb. I'll try to look that up. the three screws on the round black thing are on the passenger side where the bimetal spring is (that's the spring people are talking about not the visible spring?)

Just making sure i have the right parts in mind

kelly



Johnny Bridges wrote on Thu, 17 August 2017 09:15
After watching, I wonder if the spring is properly connected. (I also wonder if that's the correct carb - have you checked the number stamped/cast on the driver's side of the carb against the manual?)
Remove the three screws on the round black thing and pull it out - it is the temp spring which moved the choke plate. You should see in its housing a metal tab which is connected directly to the choke plate: Moving the tab should move the plate without any slack or hesitation. There should be a slot in the tab which ebngages the end of the spring to move the choke. If this is broken or not properly engaged, the choke will not work properly. When it is properly engaged, rotating the spring holder should also move the choke in either direction. When it does, turn it until thye choke just closes and then replace and tighten the three screws. You choke stove looks properl;y installed and should work. Your unloader diaphragm also looks properly hooked.

--johnny



1978 Kingsley Putney VT
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