White smoke, lagging engine before warm up. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chrohm · 11-03-2011, 05:32 PM

Here recently with a little bit cooler temps my truck blows white smoke for a bit and I have to stay on the gas some for about 2 minutes until it warms up, then it's hesitating for a little while until it gets warmer.

Carb problem or what do you guys think?

it's an 86

mdb · 11-03-2011, 06:05 PM

I think first thing would be to check the choke. It might be opening too fast or just not working at all. Step on the gas before you try to start with the air cleaner lid off and see if the flap closes.

Every vehicle blows steam out the exhaust when they're cold. I think it's just moisture that built up in the exhaust pipe...

Edit: the only way to really check that the choke is or isn't working is after the truck has sat for a few hours (overnight).

**old Rusty C10** · 11-03-2011, 06:11 PM

definately your choke needs cleaning and adjustment

tucsonjwt · 11-03-2011, 07:08 PM

Invest $12 in a manual choke.
If you have a lot of white smoke on start up it could be a blown head gasket, especially if you have trouble getting power at take off and low speed.

11-03-2011, 05:32 PM	#1
chrohm Registered User Join Date: Sep 2011 Location: longview, texas Posts: 28	White smoke, lagging engine before warm up. Here recently with a little bit cooler temps my truck blows white smoke for a bit and I have to stay on the gas some for about 2 minutes until it warms up, then it's hesitating for a little while until it gets warmer. Carb problem or what do you guys think? it's an 86

11-03-2011, 06:05 PM	#2
mdb Registered User Join Date: Nov 2010 Location: canada Posts: 43	Re: White smoke, lagging engine before warm up. I think first thing would be to check the choke. It might be opening too fast or just not working at all. Step on the gas before you try to start with the air cleaner lid off and see if the flap closes. Every vehicle blows steam out the exhaust when they're cold. I think it's just moisture that built up in the exhaust pipe... Edit: the only way to really check that the choke is or isn't working is after the truck has sat for a few hours (overnight).

11-03-2011, 06:11 PM	#3
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,287	Re: White smoke, lagging engine before warm up. definately your choke needs cleaning and adjustment __________________ 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!!

11-03-2011, 07:08 PM	#4
tucsonjwt Registered User Join Date: Jul 2007 Location: Tucson, AZ Posts: 3,188	Re: White smoke, lagging engine before warm up. Invest $12 in a manual choke. If you have a lot of white smoke on start up it could be a blown head gasket, especially if you have trouble getting power at take off and low speed.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.