Intermittent rough/no idle - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dacanuck · 12-18-2006, 10:38 AM

It seems once a week my truck will not want to idle, I have to keep the engine running with the gas pedal when I come to a stop, and it seems to miss. Even after driving on the highway for 5 minutes on my way to work it still won't idle, but it runs fine at speed, when I'm not idling. My Holley 600 carb is only about a month old. Any ideas?

piecesparts · 12-18-2006, 12:30 PM

What is your timing set at? Do the basics and check the fuel line for a good supply of fuel. Maybe your floats are sticking in the carb.

grinch4om · 12-18-2006, 05:10 PM

check you egr valve for sticking

12-18-2006, 10:38 AM	#1
dacanuck Registered User Join Date: Nov 2002 Location: Toronto, Ontario Posts: 85	Intermittent rough/no idle It seems once a week my truck will not want to idle, I have to keep the engine running with the gas pedal when I come to a stop, and it seems to miss. Even after driving on the highway for 5 minutes on my way to work it still won't idle, but it runs fine at speed, when I'm not idling. My Holley 600 carb is only about a month old. Any ideas? __________________ 86 GMC C15 swb. 350/TH350, fully loaded, but wish I had overdrive!

12-18-2006, 12:30 PM	#2
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: Intermittent rough/no idle What is your timing set at? Do the basics and check the fuel line for a good supply of fuel. Maybe your floats are sticking in the carb.

12-18-2006, 05:10 PM	#3
grinch4om dang its hot Join Date: Nov 2006 Location: frankfort kentucky Posts: 1,349	Re: Intermittent rough/no idle check you egr valve for sticking

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