Question about 1994 Hyundai Excel

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Smoking whilst idling at lights, blows blue cloud of smoke, then is OK. uses oil

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Your oil ceals have gone,and or your piston rings are worn,blue is the burning of the oil.your engine is one SHORT BURST from blowin .sorry .col leeds

Posted on Jul 16, 2009

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What could cause blue smoke from exhaust?


blue smoke is burning oil
I gather that you let the engine idle and when you give it rpms that there is a cloud of blue smoke
if that is the case it indicates that the valve stem seals are hard /failed and when the engine is at idle ( 15" mercury vacuum in manifold) the oil around the valves is sucked past the stem seals and into the combustion chamber
AS you have restricted use of the machine (every 3 weeks ) it is not a great problem as when you are on the road it is not happening (Only at idle )
It is repairable without removing the head if you find an accredited service shop that has experience in the procedure.

Jul 06, 2015 | 1989 Mercedes-Benz 300-Class

1 Answer

WHY DOES MY 1996 GALANT BLOW OUT A HUGE CLOUD OF SMOKE WHEN I START IT THEN GOES AWAY IM USING A TON OF OIL


Hi Joseph, I'm glad to help!

When engine get a lot of miles on them the seals get hard and bridle and allows oil you slip by and it goes out the exhaust in at cloud of smoke. Here's a way to see if it is you "Valve Seals". When your driving it usually clears up and you have no smoke. Here's what you need to do after driving the car and it has cleared up, pull into a parking lot and let it sit and idle for 3 minutes. If a cloud of smoke comes out of the tailpipe when you take off, then you have bad "Valve Seals" and they will need to be replaced. Hope this helps and have an awesome day Joseph.

Mar 22, 2013 | 1996 Mitsubishi Galant

1 Answer

Engines idle goes up and down after warming up and blows blue smoke


If the engine idles for a while then blows blue smoke this is an indication of oil passing the valve stem seals and being burnt in the combustion process. ( When you are at lights and they change and you accelerate away leacing a cloud of blue smoke this is worn valve guides and failed valve stem seals) As for the idle it could be the oxygen sensor is coated with oil and soot and is malfunctioning henace the cpu cannot regulate the fuel setting correctly. Have the valve seals replaced and clean the Oxygen sensor and check for other fault codes

Feb 17, 2013 | Cars & Trucks

1 Answer

Car smokes blue horribly 307 v8 engine


blue smoke is an indication that it is burning oil,the oil is getting into the combustion chamber either up past the oil rings on the pistons or down past the valve seals, & it 's not always easy to determine which one is the problem, if you get a cloud of smoke when you first start the engine after it has been standing over night & then it clears after a short time it is leaking down through the valve seals but if is is constantly blowing smoke it is most likely the piston oil rings are worn or broken......hope this helps......cheers.

Aug 28, 2011 | 1985 Buick Riviera

1 Answer

I drive a 2001 galant with a 4 cyl. i cross the mexico/usa border about 3 times per week. after idling for about 1 hour, light blue smoke comes out of the exhaust pipe. what could this be? the car uses a...


Blue smoke is an indication that you are burning oil. This typically happens through the rings on the pistons but can also be caused from valves. If the vehicle is running ok then it is most likely blowing by the rings. The vehicle probably has high miles and the way to stop the blue smoke is replacing the rings which can get very expensive. This does not mean that the vehicle will tear up tomorrow though.

Sep 23, 2010 | 2001 Mitsubishi Galant

1 Answer

My 2007 Sorento is a 2.5 diesel and has all scheduled service by the Kia dealer. Its done 25,000km goes well in all respects but after being parked for 8 hours it blows a huge cloud of blue smoke on start...


blue smoke would show a lean condition. most likely a fuel line leak between pump and tank not a pressure leak.or a check valve is allowing fuel to run back to the tank

Mar 20, 2010 | 2007 Kia Sorento 4x4

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Blowing blue smoke on light quick acceleration from idle whilst stationary


Did this problem start suddenly or after an oil change or top up. Your oil level might be too high, if so the surplus will burn off. If it happens on start up or long idle periods but goes away during normal running could be valve guides or seals.

Feb 17, 2010 | 1988 Toyota MR2

1 Answer

2001 Saturn,blows Blue smoke only when ideling


It likely has worn out or hardened valve seals in the head(s). Oil is leaking into the cylinders through these seals. I'd try a seal softening agent in the oil before doing a valve job. Check your local auto supply for such stuff. A good mechanic can replace the seals without tearing off the heads.

Jul 16, 2009 | Saturn SL2 Cars & Trucks

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