uh oh. truck started getting the chugs and shakes after i turn it off - The 1947 - Present Chevrolet & GMC Truck Message Board Network

blackbeaSSt · 10-08-2010, 05:19 PM

i've always seen peoples older cars/trucks do that. i don't wanna turn into "that guy" that people stare at all the time! could my ghetto carb setup be causing it?

baclay9 · 10-08-2010, 05:49 PM

My Dad's engine did that. I think it was because his timeing was advanced too much or something.

Sooner84 · 10-08-2010, 05:55 PM

My truck does this when its hot outside and its been running a while.

irishman999 · 10-08-2010, 06:19 PM

Your truck is dieseling, I saw your zip tie rigged carb and would probably start with your carb. Im not the brightest flash light but managed to rebuild my quadrajet and it only cost 25 bucks for the gasket kit. If you decide to rebuild it yourself do plenty of research online, I saw alot of how to video's on youtube.

C low · 10-08-2010, 06:21 PM

its prob timing if it runs good just shut it of in drive that will kill the engine right away

blazer2007 · 10-08-2010, 06:51 PM

I know my dist. was walking abit over time and I just reset the timing

76/85 Truck · 10-09-2010, 10:33 AM

My truck does the same thing. When fuel enters the cylinder, it becomes a vapor, and when your engine heats up (mine runs about 205-210 degrees) I think the hot cylinder walls ignite the fuel vapor, simply because vapor ignites better and quicker than liquid gasoline. And so when you shut the truck off, the pistons come to a stop and allows the fuel vapor that just got squirted in to sit for a split second, and it fires and drives the piston down. Anyone else think so? Just my .02

*nbpro* · 10-09-2010, 10:38 AM

Quote:

Originally Posted by irishman999

Your truck is dieseling, I saw your zip tie rigged carb and would probably start with your carb. Im not the brightest flash light but managed to rebuild my quadrajet and it only cost 25 bucks for the gasket kit. If you decide to rebuild it yourself do plenty of research online, I saw alot of how to video's on youtube.

x2^^

powerdriver 1958 · 10-09-2010, 10:50 AM

Timing , sometimes idle speed too high. Vacuum advance not plumbed to a ported vac source............

10-08-2010, 05:19 PM	#1
blackbeaSSt Registered User Join Date: Sep 2010 Location: Anderson, SC Posts: 325	uh oh. truck started getting the chugs and shakes after i turn it off i've always seen peoples older cars/trucks do that. i don't wanna turn into "that guy" that people stare at all the time! could my ghetto carb setup be causing it?

10-08-2010, 05:49 PM	#2
baclay9 Registered User Join Date: Apr 2010 Location: Newcastle, OK Posts: 1,344	Re: uh oh. truck started getting the chugs and shakes after i turn it off My Dad's engine did that. I think it was because his timeing was advanced too much or something.

10-08-2010, 05:55 PM	#3
Sooner84 Registered User Join Date: Dec 2009 Location: Moore, Oklahoma Posts: 379	Re: uh oh. truck started getting the chugs and shakes after i turn it off My truck does this when its hot outside and its been running a while. __________________ 1984 chevy swb(1st truck, sold..) 2001 RCSB silverado, 5.3 with a little extra 2004 ECSB Silverado LT, 5.3 cam & bolt ons, 4l60e shift kit/stall, g80 & 3.73s My first (1984 c10) Build

10-08-2010, 06:19 PM	#4
irishman999 Registered User Join Date: May 2010 Location: Reno Ne-VAH-da Posts: 594	Re: uh oh. truck started getting the chugs and shakes after i turn it off Your truck is dieseling, I saw your zip tie rigged carb and would probably start with your carb. Im not the brightest flash light but managed to rebuild my quadrajet and it only cost 25 bucks for the gasket kit. If you decide to rebuild it yourself do plenty of research online, I saw alot of how to video's on youtube.

10-08-2010, 06:21 PM	#5
C low Registered User Join Date: May 2010 Location: Albany Oregon Posts: 71	Re: uh oh. truck started getting the chugs and shakes after i turn it off its prob timing if it runs good just shut it of in drive that will kill the engine right away

10-08-2010, 06:51 PM	#6
blazer2007 Registered User Join Date: Jan 2007 Location: vernon b.c. Posts: 3,022	Re: uh oh. truck started getting the chugs and shakes after i turn it off I know my dist. was walking abit over time and I just reset the timing

10-09-2010, 10:33 AM	#7
76/85 Truck Registered User Join Date: Jun 2010 Location: Libby, MT Posts: 163	Re: uh oh. truck started getting the chugs and shakes after i turn it off My truck does the same thing. When fuel enters the cylinder, it becomes a vapor, and when your engine heats up (mine runs about 205-210 degrees) I think the hot cylinder walls ignite the fuel vapor, simply because vapor ignites better and quicker than liquid gasoline. And so when you shut the truck off, the pistons come to a stop and allows the fuel vapor that just got squirted in to sit for a split second, and it fires and drives the piston down. Anyone else think so? Just my .02 __________________ Rich My first truck!! 1976 Chevy 3/4 ton Camper Special and a 1985 GMC body. Has a 350, 4 BBL Edelbrock, with a Turbo 350, and NP205 T-case.

10-09-2010, 10:50 AM	#9
powerdriver 1958 Kid's Mechanic Join Date: Nov 2006 Location: Kansas City Posts: 8,241	Re: uh oh. truck started getting the chugs and shakes after i turn it off Timing , sometimes idle speed too high. Vacuum advance not plumbed to a ported vac source............



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