intermittent starting issue - The 1947 - Present Chevrolet & GMC Truck Message Board Network

larrystone · 01-22-2010, 08:41 AM

Subject: 1986 C-10 4.3 w/ factory Q-jet.

Issue: If you just pump the throttle by mistake just once when the engine is still warm it will not start. After waiting a few hours for the engine to cool off it will start will no problem. New coil and ecm installed last year.

Solution:?

**old Rusty C10** · 01-22-2010, 11:36 AM

my first thought would be to inspect the linkage and make sure that its properly working, and the butterfly is. When you flood a carbbed engine you can take a screwdriver and hold the butterfly open and it will start with the gas pedal fully depressed.

spinem · 01-22-2010, 10:26 PM

on the passenger side of your carb,there should be a little plastic can looking thing with a vaccc hose going to it. inside is an thermostatic spring.

it has prob. went out, replace and let us know. should cost 5 bucks and 5 minuets,

MR .T · 01-22-2010, 10:38 PM

THe choke is likely stuck on.

01-22-2010, 08:41 AM	#1
larrystone Registered User Join Date: Jan 2008 Location: White Haven PA Posts: 59	intermittent starting issue Subject: 1986 C-10 4.3 w/ factory Q-jet. Issue: If you just pump the throttle by mistake just once when the engine is still warm it will not start. After waiting a few hours for the engine to cool off it will start will no problem. New coil and ecm installed last year. Solution:? __________________ 1992 C1500 WT LWB 4.3TBI 700r4 4.10 limited slip= Work Truck 1986 C10 Custom Deluxe LWB 4.3-4V TH350C 2.73 ac cruise tilt= Cowboy Cadillac

01-22-2010, 11:36 AM	#2
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,302	Re: intermittent starting issue my first thought would be to inspect the linkage and make sure that its properly working, and the butterfly is. When you flood a carbbed engine you can take a screwdriver and hold the butterfly open and it will start with the gas pedal fully depressed. __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

01-22-2010, 10:26 PM	#3
spinem haha, ford guys... Join Date: Feb 2007 Location: Visalia, CA Posts: 576	Re: intermittent starting issue on the passenger side of your carb,there should be a little plastic can looking thing with a vaccc hose going to it. inside is an thermostatic spring. it has prob. went out, replace and let us know. should cost 5 bucks and 5 minuets,

01-22-2010, 10:38 PM	#4
MR .T Registered User Join Date: Jan 2010 Location: Kitchener, Ontario, Canada Posts: 94	Re: intermittent starting issue THe choke is likely stuck on.

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