Question about 1993 GMC Sierra C3500

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White smoke from 6.5 turbo diesel. already replaced both heads and gaskets

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All that work should have fixed the problem, but unfortunately white smoke means coolant, need look for a leak in a head gasket.

Posted on Nov 24, 2013

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SOURCE: 2003 gmc 6.6 turbo diesel sometimes smoke a lot

If the smoke is white smoke and you have it after it has run for a while or when you stop at a stop sign or light it is one of two things or possibly both. I have a 2003 GMC 3500 that had the same proble. It turned out to be a combination of Injector being bad and Glowplugs. Injectors are covered up to 200,000 miles but not the glowplugs. I bought 4 glowplugs of the internet for 10.49 a piece AC Delco New. The dealer replaced all 8 injectors and 8 glowplugs. I paind for 4 GP's and the installation 213.00. Truck has more power and NO white smoke you might need to take it to the dealer. The test for the injectors is about 85.00 but well worth the expense

Posted on Feb 24, 2009

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7.3 power stroke turbo diesel blows white smoke runs little bitt then dies will start after it cools off


is it smoke or steam. check the coolant the engine could be burning coolant caused by a ruptured head gasket.

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1 Answer

I have oil in my coolant. 2000 F350, 7.3 turbo diesel with 120K


It sounds like a classic blown head gasket. Most head gasket issues occur after the engine overheats. Was this engine ever overheated that you know of? Check your oil to see if it has a milky white appearance as well. The white smoke at startup is steam, which is likely water/coolant being burned. What sounds like is happening is that oil under pressure is leaking around the head gasket from the pistons into the cooling jackets, and when the engine cools, coolant is being sucked into the pistons. Most auto parts stores sell a testing kit that turns colors in the presence of carbon monoxide and determines whether exhaust gases are mixing with your coolant. However, you probably don't need this kit, since you already see oil in the coolant. The only fix is to remove the head on the engine (expensive job), have it checked, and then replace the gasket. If you continue to drive like this, you can keep an eye on the coolant level and change your oil every few months until engine performance really degrades or else you start losing a ton of coolant or oil. It will get worse and probably cause a little bit of corrosion in your cylinders, which can be cleaned up when the head is fixed.

May 23, 2012 | 2000 Ford F350 Super Duty Super Cab

1 Answer

1996 Subaru Legacy GT - Twin Turbo, manual trans: started spitting a lot of white smoke out of the exhaust. It did that when the car started then seemed to be ok when in idle but when on take off and...


Expect to hear your head gasket needs replacing, at a minimum. White smoke means it's burning coolant. How much it will cost I can only guess, but usually a head gasket repair- a few hundred dollars-it's pretty time consuming and labor intensive, especially with all the turbo stuff that could be in the way. Good luck.

Apr 06, 2012 | 2012 Subaru Legacy 2.5i Sedan 2.5L 4-cyl....

1 Answer

White smooke from exaust and smells oil


blue smoke is oil
black smoke is fuel
white smoke is coolant
sounds like head gasket if you are lucky
head cracked if not lucky

Feb 02, 2012 | Cars & Trucks

1 Answer

I got white smoke, changed head and head gasket, intake gasket looked bad. My question is: can a bad intake gasket cause the white smoke?


Not on a Gas engine, but diesel engine yes.

Diesel engine white smoke means leaking head, intake, or your turbo is not working.

Gas engine leaking intake would only cause rough idle, no power, etc,,,,

Apr 15, 2011 | 1999 Daewoo Nubira

2 Answers

Hi, what does it mean when huge amounts of white smoke comes out of the exhaust? otherwise drives ok? it is a renault megane 1.5 dci 2004. regards catherine


Symptom: White smoke or water vapor from the exhaust. You notice white smoke coming from the exhaust when you start your car. If it is cold out, this may be normal. If the smoke does not disappear after the car is warmed, you have a problem. Possible causes:
  1. Transmission fluid may be entering the intake manifold through vacuum modulator.
    The Fix: Replace vacuum modulator
  2. Cylinder head gasket(s) may be bad.
    The Fix: Replace cylinder head gasket(s).
  3. Cylinder head(s) may be warped or cracked.
    The Fix: Resurface or replace cylinder heads. (Resurfacing is not a DIY job)
  4. The engine block may be cracked.
    The Fix: Replace engine block.

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2003 f250 won't start


Is this a small amount of white smoke or a lot of white smoke? If it is a lot of white smoke it could be a head gasket problem.

1. Do you have coolant in oil or vice versa?
2. Pull spark plugs and inspect for plugs wet with coolant.
3. Do a compression test and check for a low cylinder.

If you have issues in any of these points you will need to replace the head gaskets.

Jun 07, 2009 | 2003 Ford F250 Super Duty Crew Cab

1 Answer

Estima starting problem


hi im rob r u looseing water white smoke indercates cracked head or blowen cylinder head gasket and the turbo wont provent it from starting turbos r just to give u more power

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some black smoke comes out when i put foot down and loses power when goiong uphill i have a nissan mistral/terrano 2.7td

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