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Blue smoke only when starting - 2008 Infiniti G37

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I have a Brute Force 750, starts OK but runs rough after a few minutes, will start smoking a smelly black/gray smoke, and most recently some blue smoke.


When the head gasket fails on a liquid (water) cooled engine the typical smoke colour is white (steam) and that becomes rather underlined by the steady drop of the coolant level and often clear evidence combustion gas is leaking into the cooling system.

Smelly black/grey smoke tends to be produced by an over-fuelling condition such as a stuck choke or strangler or other cold starting aid or perhaps carburettor flooding.

Blue or blue/grey smoke is invariably engine oil burning but I suggest you ignore that until the black smoke problem is rectified and after a short time the blue smoke might also disappear. If it doesn't it could be related to the overheating but the black smoke probably wasn't caused by that...

Mar 18, 2017 | Cars & Trucks

1 Answer

Blue smoke 96 honda prelude


Blue some is burning oil. Check your PCV valve 1st, but if this is bad, your idle would be high. If it smokes when 1st starting only, the valve guides and/or seals are bad. If it smokes while driving, the rings are worn out.

May 05, 2014 | Honda Prelude Cars & Trucks

1 Answer

When first starting up smoke comes from exhaust and makes a loud noise


Black smoke is excess unburnt fuel. Blue smoke is oil being burned, if blue the valve stem seals may be allowing oil to seep down over night.

Dec 31, 2013 | Peugeot Partner Cars & Trucks

1 Answer

Blowing blue smoke


Hi can you tell me make and model. Does the car blow blue smoke all the time and other than smoke any other symptons? poor starting , power loss etc.
I had a similar problem on a golf gti after servicing drove very well but smoked on start up, and found to be the high grade fully synthetic oil recommended by the factors was simply too thin, and thus giving me by pass on worn valve seals and pistons on older engine sometimes a thicker grade oil is better.

Dec 01, 2013 | Audi Cars & Trucks

1 Answer

I am experiencing problems with my BMW 320i - 2004 model. It does not start easily. When it starts, a blue fuel smoke comes from the exhaust. this causes the car also to be heavy on fuel consumptio


Blue smoke is caused by oil. Rich running causes black smoke and will set the check engine light. Rich running (black smoke) on startup could be caused by a leaking injector. The blue smoke puff at startup is likely valve stem seals leaking or a bad crank case vent malfunction and sucking oil into the manifold at high vacuum conditions.

Nov 19, 2013 | BMW 320i Cars & Trucks

1 Answer

1994 mazda mx3 starts and then quits


Blue smoke from the exhaust = burning engine oil.

Apr 23, 2012 | 1994 Mazda MX-3

1 Answer

2001 saturn sl2 blue smoke when starting I'm car


Blue smoke is usually bad rings. But in the meantime, try changing your oil, see if that helps.

Mar 11, 2012 | 1993 Saturn SL2

1 Answer

If blue smoke started but then it stopped what does that mean?


When you stop at the traffic lights and then drive off and you get blue white smoke then you have either worn piston rings or worn valve guides where oil is getting into the combustion chamber.

Jan 24, 2012 | 1998 Mazda 626

3 Answers

Puffs blue smoke


Blue smoke is caused by engine oil entering the cylinder area and being burned along with the fuel air mixture. As with the white smoke, just a small drop of oil leaking into the cylinder can produce blue smoke out the tailpipe. Blue smoke is more likely in older or higher mileage vehicles than newer cars with fewer miles.

This could mean a cracked head or bad gasket....It costly

Dec 08, 2008 | 1997 Suzuki Sidekick

5 Answers

Blue smoke coming from exhaust


blue smoke out of 1.8 turbo its allways bad oil seal inside turbo.need new turbo or rebuild OEM. with 24 years experience working with vw never seen single headhasket go bad on 1.8 turbo engines.blue smoke its 100% turbo every time

Jul 17, 2008 | 1999 Volkswagen Passat

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