Stuttering and white exhaust
#1
Stuttering and white exhaust
Car: 91 z28 5.7 TPI coupe
I've got 3 problems that I'd like to fix:
1. When I start the car after it's been sitting for a while, I get puffs of white smoke.
2. When I start the car after it's been sitting for a while and then drive it through my parking lot, the car stutters as if I were tapping on the gas repeatedly. The longer the car sits, the longer it takes to go away. Like when I wake up and go to work in the morning, it takes about 800-1000 feet of driving. When I leave work (it's been sitting for 4.5 hours after lunch) it's gone in about 100 feet of driving.
3. Often when I've been driving and I'm stopped at a red light, my RPM pulse from what looks like 950-1000 instead of staying still.
Please help. Thanks.
I've got 3 problems that I'd like to fix:
1. When I start the car after it's been sitting for a while, I get puffs of white smoke.
2. When I start the car after it's been sitting for a while and then drive it through my parking lot, the car stutters as if I were tapping on the gas repeatedly. The longer the car sits, the longer it takes to go away. Like when I wake up and go to work in the morning, it takes about 800-1000 feet of driving. When I leave work (it's been sitting for 4.5 hours after lunch) it's gone in about 100 feet of driving.
3. Often when I've been driving and I'm stopped at a red light, my RPM pulse from what looks like 950-1000 instead of staying still.
Please help. Thanks.
#3
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Car: 1989 camaro rs
Engine: 305 tbi
Transmission: 700r4
Axle/Gears: 3.23 lsd swap
Re: Stuttering and white exhaust
white smoke? head gasket? thats my guess. did it overheat? if it did i would do a compression test. if any of the cylinders are signficantly different than the others its probably a blown gasket. my stepfather once overheated a 350 in a 1 ton chevy van. we had to have the heads rebuilt and install new gaskets. have them checked for cracks at a machine shop.
Last edited by ad356; 06-29-2007 at 01:02 PM.
#4
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Car: 89 Firebird
Engine: 350 Ramjet
Transmission: 700R4
Axle/Gears: GM 9 bolt 3:27
Re: Stuttering and white exhaust
Car: 91 z28 5.7 TPI coupe
I've got 3 problems that I'd like to fix:
1. When I start the car after it's been sitting for a while, I get puffs of white smoke.
2. When I start the car after it's been sitting for a while and then drive it through my parking lot, the car stutters as if I were tapping on the gas repeatedly. The longer the car sits, the longer it takes to go away. Like when I wake up and go to work in the morning, it takes about 800-1000 feet of driving. When I leave work (it's been sitting for 4.5 hours after lunch) it's gone in about 100 feet of driving.
3. Often when I've been driving and I'm stopped at a red light, my RPM pulse from what looks like 950-1000 instead of staying still.
Please help. Thanks.
I've got 3 problems that I'd like to fix:
1. When I start the car after it's been sitting for a while, I get puffs of white smoke.
2. When I start the car after it's been sitting for a while and then drive it through my parking lot, the car stutters as if I were tapping on the gas repeatedly. The longer the car sits, the longer it takes to go away. Like when I wake up and go to work in the morning, it takes about 800-1000 feet of driving. When I leave work (it's been sitting for 4.5 hours after lunch) it's gone in about 100 feet of driving.
3. Often when I've been driving and I'm stopped at a red light, my RPM pulse from what looks like 950-1000 instead of staying still.
Please help. Thanks.
#2 try some good injector cleaner, your injectors migh be sticking
#3 see #2 fix that first then see what happens.
but of course fix #1 and the other 2 might be fixed also
#5
Re: Stuttering and white exhaust
1. How blue are we talking here? Is it something I could see myself in my mirror or should I have a friend start the car for me and look at it up close? They are just 2 quick puffs, one from each pipe.
2. Do you mean the stuff you add to your fuel that you can buy for like 5-10 bucks? Or actually opening up the engine and cleaning the injectors? If it's the additive, could you suggest a decent brand?
thanks
2. Do you mean the stuff you add to your fuel that you can buy for like 5-10 bucks? Or actually opening up the engine and cleaning the injectors? If it's the additive, could you suggest a decent brand?
thanks
#6
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Location: Illinois
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Car: 89 Firebird
Engine: 350 Ramjet
Transmission: 700R4
Axle/Gears: GM 9 bolt 3:27
Re: Stuttering and white exhaust
1. How blue are we talking here? Is it something I could see myself in my mirror or should I have a friend start the car for me and look at it up close? They are just 2 quick puffs, one from each pipe.
2. Do you mean the stuff you add to your fuel that you can buy for like 5-10 bucks? Or actually opening up the engine and cleaning the injectors? If it's the additive, could you suggest a decent brand?
thanks
2. Do you mean the stuff you add to your fuel that you can buy for like 5-10 bucks? Or actually opening up the engine and cleaning the injectors? If it's the additive, could you suggest a decent brand?
thanks
I can't honestly tell you which one is better than the other, personally when I had the same problem on a Monte Carlo I ended up replacing the injectors. I haven't had much luck using anything after the injector is already sticking. Maybe someone else has better info as far as the additive.
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