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06-27-2017, 10:22 PM
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#1 |
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Registered User
Join Date: Oct 2014
Location: brentwood, ca.
Posts: 109
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Stalling issue - need advice
I've had the truck for 3 years and never had this issue before. I washed the truck today since it was filthy. After that I made a slight adjustment to the curb idle speed (raising it from 500 to 650, just to see any performance difference). Went for a drive and after about a mile, the truck completely died on me as I came to a stop sign. I was able to get it started after a couple tries. A few blocks later, it did it again. I went home and adjusted it back to 500 (where it has been for the last year). Drove it again and the same thing happened. When I finally got it started, it smells like it is running really rich now. I have an HEI Distributor and Holley 670 Street Avenger carb with a small block 350/290. Not sure what it could be, possible float bowl issue?? Any advice would be appreciated.
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1967 Chevy C10 Stepside SWB - 350/700r4 |
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06-27-2017, 11:32 PM
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#2 |
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Registered User
Join Date: Jan 2013
Location: Tucson, AZ
Posts: 60
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Re: Stalling issue - need advice
Not being disrespectful, but have to ask: are you sure the screw you turned both times was the idle speed adjustment screw?
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06-27-2017, 11:51 PM
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#3 |
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Registered User
Join Date: Oct 2014
Location: brentwood, ca.
Posts: 109
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Re: Stalling issue - need advice
No offense taken...Yes it was
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1967 Chevy C10 Stepside SWB - 350/700r4 |
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06-28-2017, 12:41 AM
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#4 |
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Account Suspended
 Join Date: Jul 2016
Location: Tacoma, WA
Posts: 6,873
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Re: Stalling issue - need advice
Could it be possible the secondaries are open a tiny bit causing it to be way to rich if they are dripping fuel or lean if they are not dripping, try closing them by hand
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06-28-2017, 12:41 AM
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#5 |
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Registered User
Join Date: Jan 2011
Location: Edinburg, Texas.
Posts: 194
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Re: Stalling issue - need advice
Hi, did you wash the engine or could water have got into the distributor? I have seen lots of hei's get wet under the coil cover. They will act just like what you are describing.
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06-28-2017, 12:58 AM
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#6 |
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Registered User
Join Date: Oct 2014
Location: brentwood, ca.
Posts: 109
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Re: Stalling issue - need advice
I didn't wash the engine, but I guess it could be possible the distributor got wet in the process of washing the truck.
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1967 Chevy C10 Stepside SWB - 350/700r4 |
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06-28-2017, 02:06 AM
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#7 |
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Registered User
Join Date: Jan 2011
Location: Edinburg, Texas.
Posts: 194
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Re: Stalling issue - need advice
It may be worth pulling the coil cover off and looking for humidity inside under the coil.
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06-28-2017, 08:20 AM
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#8 |
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Registered User
Join Date: May 2017
Location: Parker, CO
Posts: 130
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Re: Stalling issue - need advice
If not moisture in the distributor, have you looked for any vacuum lines that may have come off?
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72 Chevy C10 383/465 69 Corvette convertible 454/650 |
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06-28-2017, 08:36 AM
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#9 | |
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Registered User
Join Date: Apr 2011
Location: Fairview Park, Ohio
Posts: 1,030
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Quote:
Posted via Mobile Device |
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06-28-2017, 12:12 PM
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#10 |
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Registered User
 
Join Date: Dec 2013
Location: Omaha NE
Posts: 620
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Re: Stalling issue - need advice
Mine was doing this after the winter storage and ended up being clogged fuel filter.
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1972 C10 Custom Deluxe LWB, 402/400, PS, PB, A/C, Highlander, Hugger / White 1971 C10 Cheyenne LWB (SWB), 350/350, PS, PB, A/C, Dark Olive / White. |
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06-28-2017, 12:14 PM
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#11 |
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Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Stalling issue - need advice
Random guess - Do you have the factory air cleaner? Maybe you unhooked the vacuum line for the Thermac to take it off to adjust the idle and forgot to reconnect it?
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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06-28-2017, 12:26 PM
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#12 |
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Moderator
 
Join Date: Jun 2017
Location: Cherryville, NC
Posts: 2,155
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Re: Stalling issue - need advice
Water could have infiltrated the HEI system if the Cowl to Hood rubber seal is either missing or degraded.
I have seen trucks with no seal literally stop in the middle of the road during a rain shower. Water drops straight down onto the distributor... LMC have the seals # 38-7410 for $ 8.99 Remove the HEI cap and coil, remove the coil and make sure it is totally dry...make sure the inside of the HEI unit is totally dry... Hope this helps
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