Home » Public Forums » GMCnet » Coach starts cold PERFECTLY- almost
 Coach starts cold PERFECTLY- almost [message #359855] |
Wed, 28 October 2020 16:55  |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
Karma: 0
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Been a long time since i had a carbed vehicle. I had this coach running with seven year old gas and it still ran pretty well. I drained the fuel and replaced the fuel filter and now it runs much better.
When i turn the key, without touching the gas, it fires immediately and runs for a few seconds before stalling.
To get it to keep running it's a voodoo dance of tapping the gas while calling on the spirit of Mickey Thompson and then it struggles to stay running for a few minutes until it finds the happy place.
But the fact that it fires instantly without touching the gas suggests that it's set up pretty well so I don't want to mess with anything without some clear guidance.
Help Me ObiWan (you know who you are)
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
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| Re: [GMCnet] Coach starts cold PERFECTLY- almost [message #359857 is a reply to message #359855] |
Wed, 28 October 2020 17:13  |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Sounds like the basic choke adjustment must be fairly close to correct.
Also, the carb has fuel in the float bowl. Don't mess with that either. For
now. So, that leaves the fast idle adjustment, along with the electric
choke stove. If the choke stove is powered so that it comes on with the
ignition key "on" position, it may be helpful to move the source of voltage
to a place that gets it's feed from the engine alternator. That will allow
some warm up time before the choke pulls off. The fast idle adjustment is
fairly straightforward . Just turn it up a bit to make the engine run
around 1000 - 1200 rpm until kickdown.
Easy, peasy, grasshopper!
Jim Hupy
Salem, Oregon
On Wed, Oct 28, 2020, 2:55 PM dave silva via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Been a long time since i had a carbed vehicle. I had this coach running
> with seven year old gas and it still ran pretty well. I drained the fuel and
> replaced the fuel filter and now it runs much better.
>
> When i turn the key, without touching the gas, it fires immediately and
> runs for a few seconds before stalling.
>
> To get it to keep running it's a voodoo dance of tapping the gas while
> calling on the spirit of Mickey Thompson and then it struggles to stay
> running
> for a few minutes until it finds the happy place.
>
> But the fact that it fires instantly without touching the gas suggests
> that it's set up pretty well so I don't want to mess with anything without
> some
> clear guidance.
>
> Help Me ObiWan (you know who you are)
>
>
> --
> Dave & Ellen Silva
>
> 1972 Revcon Olds 455, toro drive train. All Stock
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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| Re: [GMCnet] Coach starts cold PERFECTLY- almost [message #359858 is a reply to message #359857] |
Wed, 28 October 2020 17:59 |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
Karma: 0
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Senior Member |
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James Hupy wrote on Wed, 28 October 2020 17:13Sounds like the basic choke adjustment must be fairly close to correct.
Also, the carb has fuel in the float bowl. Don't mess with that either. For
now. So, that leaves the fast idle adjustment, along with the electric
choke stove. If the choke stove is powered so that it comes on with the
ignition key "on" position, it may be helpful to move the source of voltage
to a place that gets it's feed from the engine alternator. That will allow
some warm up time before the choke pulls off. The fast idle adjustment is
fairly straightforward . Just turn it up a bit to make the engine run
around 1000 - 1200 rpm until kickdown.
Easy, peasy, grasshopper!
Jim Hupy
Salem, Oregon
And just like that, Obiwan answered.
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
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| Re: [GMCnet] Coach starts cold PERFECTLY- almost [message #359861 is a reply to message #359860] |
Wed, 28 October 2020 21:02 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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If the engine is carbureted, the procedure when engine
is cold is to slowly press accelerator to the floor and then
let up on it slowly. This should set the choke and fast idle.
Then start the engine without touching the accelerator
again. Within maybe 20-30 seconds, the engine SHOULD
have gotten heat up and run fairly smoothly. When it does,
you can then lightly tap the accelerator to let the choke
begin to slowly open. Driving off gently then should be an
easy task for a couple of more minutes.
We have all gotten spoiled with fuel injection and computer
controlled initial throttle settings and need to remember the
"old things."
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 dave silva via Gmclist
Sent: Wednesday, October 28, 2020 19:59
To: gmclist@list.gmcnet.org
Cc: dave silva
Subject: Re: [GMCnet] Coach starts cold PERFECTLY- almost
JohnL455 wrote on Wed, 28 October 2020 19:40
> Have you read cold start procedure in owners manual?
I don't have an owners manual but I suppose I should get one. But really, the 'procedure" of turning the key and having it start seems to be working,
pending a little adjustment.
--
Dave & Ellen Silva
1972 Revcon Olds 455, toro drive train. All Stock
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