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| [GMCnet] Re: Exhaust bang bang bang [message #366804 is a reply to message #366802] |
Wed, 15 September 2021 17:13   |
Rob
Messages: 651
Registered: November 2013
Location: Victoria, BC
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If you *want* to try it - there are a few other choices locally that are supposed to be ethanol free:
Chevron 94
CO-OP premium
Costco Premium
Shell V-Power 91
https://www.pure-gas.org/index.jsp?stateprov=BC
Rob
76 Royale Twin Beds, Dry Bath
Victoria, BC
> On Sep 15, 2021, at 3:07 PM, wrote:
>
> sgltrac wrote on Wed, 15 September 2021 14:08
>> I mean non ethanol vs ethanol.
>>
>> Sully
>> Bellevue wa
>
> We don't have much of a choice in that dept., I think only the top Chevron grade is ethanol free and that's some expensive stuff.
>
> Thanks for the tip though
>
>
> Larry
> --
> Larry - Victoria BC -
>
> 1977 Palm Beach 40,000 miles, PO said everything working but forgot the word NOT. New Atwood fridge, water heater & furnace. New SS exhaust system,
> 6000w Onan, Iota Converter, R134A A/C, New fuel lines & heat exchange hoses
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| Re: [GMCnet] Re: Exhaust bang bang bang [message #366813 is a reply to message #366806] |
Wed, 15 September 2021 21:29 |
boybach
Messages: 566
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Location: Vancouver Island
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Matt Colie wrote on Wed, 15 September 2021 17:03The banging in the exhaust comes from misfires cause by the charge pressure being too low to sustain the fire when the plug lights it. I can't understand that the fuel quality could effect that at all. I guess it is worth a try, but I wouldn't get my hopes up.
Matt
I'm with you Matt. There is no way I'm going to put some unnecessarily high priced premium gas in my rig. IMO anyone who thinks their coach runs better or gets better mileage with premium is deluding themselves.
I'll check the idle speed first, soon as I pick up something to check it with ...I'll be looking for an old analog unit with a needle.
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
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| Re: [GMCnet] Re: Exhaust bang bang bang [message #366814 is a reply to message #366804] |
Wed, 15 September 2021 21:32 |
boybach
Messages: 566
Registered: December 2020
Location: Vancouver Island
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Rob wrote on Wed, 15 September 2021 15:13If you *want* to try it - there are a few other choices locally that are supposed to be ethanol free:
Chevron 94
CO-OP premium
Costco Premium
Shell V-Power 91
https://www.pure-gas.org/index.jsp?stateprov=BC
Rob
76 Royale Twin Beds, Dry Bath
Victoria, BC
Not a snowball's chance in hell Rob, bloody regular is overpriced enough for me, I'll just run CO-OP regular like always.
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
[Updated on: Wed, 15 September 2021 21:32] Report message to a moderator |
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| [GMCnet] Re: Exhaust bang bang bang [message #366815 is a reply to message #366814] |
Wed, 15 September 2021 21:38 |
Rob
Messages: 651
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Location: Victoria, BC
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Mine runs great on the cheapest regular I can get...
Rob
76 Royale Twin Beds, Dry Bath
Victoria, BC
> On Sep 15, 2021, at 7:32 PM, wrote:
>
> Rob wrote on Wed, 15 September 2021 15:13
>> If you *want* to try it - there are a few other choices locally that are supposed to be ethanol free:
>>
>> Chevron 94
>> CO-OP premium
>> Costco Premium
>> Shell V-Power 91
>>
>> https://www.pure-gas.org/index.jsp?stateprov=BC
>>
>> Rob
>> 76 Royale Twin Beds, Dry Bath
>> Victoria, BC
>
> Not a snowball's chance in hell Rob, bloody regular is overpriced enough for me, I'll just run C0-OP regular like always.
>
> Larry
>
> --
> Larry - Victoria BC -
>
> 1977 Palm Beach 40,000 miles, PO said everything working but forgot the word NOT. New Atwood fridge, water heater & furnace. New SS exhaust system,
> 6000w Onan, Iota Converter, R134A A/C, New fuel lines & heat exchange hoses
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| Re: Exhaust bang bang bang [message #366827 is a reply to message #366771] |
Thu, 16 September 2021 14:54 |
boybach
Messages: 566
Registered: December 2020
Location: Vancouver Island
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OK, I got myself an analog tach dwell meter. How do I hook it up? Was expecting to find a coil but it looks like I have a HEI system so the coil is inside the distributor?
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
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| [GMCnet] Re: Exhaust bang bang bang [message #366828 is a reply to message #366827] |
Thu, 16 September 2021 15:01 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
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If you'll look carefully at the extension on the side of the HEI
distributor cap, where the wire's connected, you'll see that there's a
second connection tab there, labelled on the side of the cap as "Tach".
Guess what...
Ken H.
On Thu, Sep 16, 2021 at 3:54 PM wrote:
> OK, I got myself an analog tach dwell meter. How do I hook it up? Was
> expecting to find a coil but it looks like I have a HEI system so the coil
> is
> inside the distributor?
>
> Larry
>
> --
> Larry - Victoria BC -
>
> 1977 Palm Beach 40,000 miles, PO said everything working but forgot the
> word NOT. New Atwood fridge, water heater & furnace. New SS exhaust system,
> 6000w Onan, Iota Converter, R134A A/C, New fuel lines & heat exchange hoses
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| [GMCnet] Re: Exhaust bang bang bang [message #366829 is a reply to message #366828] |
Thu, 16 September 2021 16:25 |
larry.schaffer
Messages: 2
Registered: July 2021
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Ken, you sent this to the wrong Larry. Any questions, call my wife, Zenna Schaffer at 1 360 888 7110. Sent from my T-Mobile 4G LTE Device
-------- Original message --------From: Ken Henderson Date: 9/16/21 1:01 PM (GMT-08:00) To: GMC Mail List Subject: [GMCnet] Re: Exhaust bang bang bang If you'll look carefully at the extension on the side of the HEIdistributor cap, where the wire's connected, you'll see that there's asecond connection tab there, labelled on the side of the cap as "Tach".Guess what...Ken H.On Thu, Sep 16, 2021 at 3:54 PM wrote:> OK, I got myself an analog tach dwell meter. How do I hook it up? Was> expecting to find a coil but it looks like I have a HEI system so the coil> is> inside the distributor?>> Larry>> --> Larry - Victoria BC ->> 1977 Palm Beach 40,000 miles, PO said everything working but forgot the> word NOT. New Atwood fridge, water heater & furnace. New SS exhaust system,> 6000w Onan, Iota Converter, R134A A/C, New fuel lines & heat exchange hoses> _______________________________________________> GMCnet mailing list> Unsubscribe or Change List Options:>_______________________________________________GMCnet mailing listUnsubscribe or Change List Options:
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| [GMCnet] Re: Exhaust bang bang bang [message #366830 is a reply to message #366829] |
Thu, 16 September 2021 16:36 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Larry,
I'll bet (or at least hope) that the other Larry
(twlldeen@gmail.com) got it too.
Ken H.
On Thu, Sep 16, 2021 at 5:25 PM larry.schaffer
wrote:
> Ken, you sent this to the wrong Larry. Any questions, call my wife, Zenna
> Schaffer at 1 360 888 7110. Sent from my T-Mobile 4G LTE Device
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Re: Exhaust bang bang bang [message #366832 is a reply to message #366828] |
Thu, 16 September 2021 21:11 |
boybach
Messages: 566
Registered: December 2020
Location: Vancouver Island
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Ken Henderson wrote on Thu, 16 September 2021 13:01If you'll look carefully at the extension on the side of the HEI
distributor cap, where the wire's connected, you'll see that there's a
second connection tab there, labelled on the side of the cap as "Tach".
Guess what...
Ken H.
Good one Ken, I got the message no problem. The cap was pretty dusty and after I cleaned it off I could see the words.
I'd like to ask more about how to actually connect here and if I decide to install a tach in the dash, is this where I would tap into?
Anyway, before getting the answer about the tach take-off on the distributor cap, I'd borrowed a digital tach and stuck a reflector on the harmonic balancer.
After she warmed up, my idle averaged about 720-740 in park so we tried bringing it down with the throttle screw adjuster ..... without success.
The screw backed off but the throttle cable/linkage didn't follow so I pushed the throttle closed and got her down to 640-660. Exercising the linkage back and forth the stop was more and more prone to sit at the screw setting and finally gave the whole linkage/shaft/cable etc a good drink of silicone lubricant which seemed to do the trick.
Putting her in drive, she idles at the high 500's with no sign of stalling or choking so maybe that's ok? Haven't been down any steep grades since, but I'll report back after I do the next run.
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
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| [GMCnet] Re: Exhaust bang bang bang [message #366836 is a reply to message #366832] |
Fri, 17 September 2021 05:02 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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There should be 3 leads on your tachometer: +12VDC, Ground, and Signal.
Signal goes to that Tach connector on the distributor cap.
Ken H.
On Thu, Sep 16, 2021 at 10:11 PM wrote:
> Ken Henderson wrote on Thu, 16 September 2021 13:01
>> If you'll look carefully at the extension on the side of the HEI
>> distributor cap, where the wire's connected, you'll see that there's a
>> second connection tab there, labelled on the side of the cap as "Tach".
>> Guess what...
>>
>> Ken H.
>
> Good one Ken, I got the message no problem. The cap was pretty dusty and
> after I cleaned it off I could see the words.
> I'd like to ask more about how to actually connect here and if I decide to
> install a tach in the dash, is this where I would tap into?
>
> Anyway, before getting the answer about the tach take-off on the
> distributor cap, I'd borrowed a digital tach and stuck a reflector on the
> harmonic
> balancer.
> After she warmed up, my idle averaged about 720-740 in park so we tried
> bringing it down with the throttle screw adjuster ..... without success.
> The screw backed off but the throttle cable/linkage didn't follow so I
> pushed the throttle closed and got her down to 640-660. Exercising the
> linkage
> back and forth the stop was more and more prone to sit at the screw
> setting and finally gave the whole linkage/shaft/cable etc a good drink of
> silicone lubricant which seemed to do the trick.
>
> Putting her in drive, she idles at the high 500's with no sign of
> stalling or choking so maybe that's ok? Haven't been down any steep grades
> since,
> but I'll report back after I do the next run.
>
> Larry
>
> --
> Larry - Victoria BC -
>
> 1977 Palm Beach 40,000 miles, PO said everything working but forgot the
> word NOT. New Atwood fridge, water heater & furnace. New SS exhaust system,
> 6000w Onan, Iota Converter, R134A A/C, New fuel lines & heat exchange hoses
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Re: Exhaust bang bang bang [message #366841 is a reply to message #366836] |
Fri, 17 September 2021 09:28 |
boybach
Messages: 566
Registered: December 2020
Location: Vancouver Island
Karma: 4
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Ken Henderson wrote on Fri, 17 September 2021 03:02There should be 3 leads on your tachometer: +12VDC, Ground, and Signal.
Signal goes to that Tach connector on the distributor cap.
Ken H.
Thanks Ken. I'll have a closer look at the connector area with a mirror - is there an illustration somewhere as I don't see a tang there, is it a socket that takes a plug pehaps?
<EDIT> Ok I had a look at google images and I can see there's a tang underneath. I'll pick up a GM plug and hook it up to the green wire on my tach.
Anyone like to comment on my idle rpm's in park and drive mentioned above? Are those numbers OK?
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
[Updated on: Fri, 17 September 2021 09:46] Report message to a moderator |
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| [GMCnet] Re: Exhaust bang bang bang [message #366843 is a reply to message #366841] |
Fri, 17 September 2021 09:47 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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Forget changing fuel. The problem is not the type of fuel.
Just learn from John L.
On Fri, Sep 17, 2021 at 7:28 AM wrote:
> Ken Henderson wrote on Fri, 17 September 2021 03:02
>> There should be 3 leads on your tachometer: +12VDC, Ground, and Signal.
>> Signal goes to that Tach connector on the distributor cap.
>>
>> Ken H.
>
> Thanks Ken. I'll have a closer look at the connector area with a mirror -
> is there an illustration somewhere as I don't see a tang there, is it a
> socket that takes a plug pehaps?
>
> Larry
> --
> Larry - Victoria BC -
>
> 1977 Palm Beach 40,000 miles, PO said everything working but forgot the
> word NOT. New Atwood fridge, water heater & furnace. New SS exhaust system,
> 6000w Onan, Iota Converter, R134A A/C, New fuel lines & heat exchange hoses
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Applied/GMC
jimk@appliedairfilters.com
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| Re: [GMCnet] Re: Exhaust bang bang bang [message #366845 is a reply to message #366843] |
Fri, 17 September 2021 10:40 |
boybach
Messages: 566
Registered: December 2020
Location: Vancouver Island
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I did what he said Jim and set the idle lower. It was around 720-740. My idle is now around 650 engine warm in park and about 560-580 in drive. Is that OK?
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
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| [GMCnet] Re: Exhaust bang bang bang [message #366848 is a reply to message #366841] |
Fri, 17 September 2021 11:22 |
Rob
Messages: 651
Registered: November 2013
Location: Victoria, BC
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http://rmcavoy.freeshell.org/diagrams/HEI/HEIconnectors.jpg
In the distant past - I recall just using a standard automotive spade connector.
Rob
76 Royale Twin Beds, Dry Bath
Victoria, BC
> On Sep 17, 2021, at 7:28 AM, twlldeen@gmail.com wrote:
>
> Ken Henderson wrote on Fri, 17 September 2021 03:02
>> There should be 3 leads on your tachometer: +12VDC, Ground, and Signal.
>> Signal goes to that Tach connector on the distributor cap.
>>
>> Ken H.
>
> Thanks Ken. I'll have a closer look at the connector area with a mirror - is there an illustration somewhere as I don't see a tang there, is it a
> socket that takes a plug pehaps?
>
> Larry
> --
> Larry - Victoria BC -
>
> 1977 Palm Beach 40,000 miles, PO said everything working but forgot the word NOT. New Atwood fridge, water heater & furnace. New SS exhaust system,
> 6000w Onan, Iota Converter, R134A A/C, New fuel lines & heat exchange hoses
> _______________________________________________
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
Rob -
Victoria, BC -
76 Royale - Rear Twins/Dry Bath
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| Re: [GMCnet] Re: Exhaust bang bang bang [message #366849 is a reply to message #366848] |
Fri, 17 September 2021 11:39 |
boybach
Messages: 566
Registered: December 2020
Location: Vancouver Island
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Rob wrote on Fri, 17 September 2021 09:22http://rmcavoy.freeshell.org/diagrams/HEI/HEIconnectors.jpg
In the distant past - I recall just using a standard automotive spade connector.
Rob
76 Royale Twin Beds, Dry Bath
Victoria, BC
Thanks Rob, yes that looks like it would work. On the hunt now for an accessory panel to mount a few gauges incl. a tach.
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
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