Question about 1994 Mazda 626

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When I start the car after it has been parked for some time it smokes a lot. i have done the cylinder head. but the problem is still there.

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If the smoke is a blueish color then you probably have worn oil rings that need to be replaced.Check the pcv valve to see if it clogged. If it is white in color,Have a compression check done on the cylinders to make sure there is no internal leak.

Posted on Oct 02, 2010

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My 2011 Kia Cerato "S" has been using a lot of oil. The cylinder head was re-conditioned and engine serviced. The now engine blows smoke every time on starting. What is the probable cause ?


depends on how the head was reconditioned
were new valve guides installed along with new valves
were the stem seals correctly fitted
was a compression test done to determine the wear condition of the engine
smoke on start up is oil in the combustion chamber from valve stem seals , worn rings , sump pressure from excessive blow by through the line to the air inlet
check for oil leaks ( filter etc ) but using a lot of oil indicates ring problem, excessive bearing clearance overloading the oil control ring
try using a heavier grade of oil 30w 50 or oil for worn motors

Dec 04, 2016 | Kia Cars & Trucks

1 Answer

What causes heaps of smoke on start up , usually cold but goes once operating temperature?Smoke colour is more whitish than oil coloured so is fuel related!


It helps to indicate what vehicle you have , which engine is fitted and the mileage it has done when posing your questions.
.
No it is not fuel related but very likely engine oil and valve stem related.

The most likely problem is that the valve stem seals are leaking instead of sealing and when you park the car for a decent length of time (as overnight) the oil in the cylinder head drains down via the bad seals into the cylinders and builds up.

When you start the car you will get instant smoke from the exhaust and oil smoke will linger (unlike steam).. It will keep smoking until most of the excess oil has been burned up but oil will continue to slowly leak into the cylinders while driving and will be burned up quickly and cannot accumulate until you shut down the engine again and leave the car again for hours.

Stand behind the car after it has been sitting for a while and check the emissions. Oil smoke is very distinctive in smell and it lingers.

Mar 21, 2016 | Cars & Trucks

1 Answer

5.3l. Why does it sometimes smoke a lot during morning start up?


Most likely bad valve guides if the smoke is derived from oil. This would require a cylinder head job. If the smoke is white, then most likely a stuck/leaking fuel injector. If it is gray could be leaking coolant into combustion chambers also most likely requiring cylinder head rebuild.

Mar 15, 2016 | 2006 GMC Envoy

1 Answer

My 2004 PT cruiser have a bad water pump fill it with water going about 70 when white smoke came out then it rattle and shut off now it wontstart


That is bad news, sorry to say. Much worse than a bad water pump, white smoke is an indication of coolant being burned in the cylinders, probably due to a cylinder head gasket failure. To verify, have an engine compression test done, or pull out the spark plugs and check them. The bottom part of the plug from a good cylinder will be tan or light brown with very little deposits on them. A bad cylinder will likely have a lot of deposits on the plug. You may even see evidence of water in the cylinder. The only repair is a new head gasket, which gets quite expensive at shops. It is a labor intensive job, not terribly difficult but takes a good amount of time getting to the head gasket, and a good shop will check out the cylinder head for cracks, for straightness of the head where it sits on the engine block, and if the valve train is still good or needs any new parts.

Apr 17, 2014 | Cars & Trucks

1 Answer

I have a 2001 Bora pd 115bhp engine code ajm... I recently done the head gasket in it and since it has been done the car is hard start from cold. the engine turns over for 10 or 15 seconds before it will...


Sounds like there was more damage present than just the head gasket. Perhaps a crack in the cylinder head. Was it pressure checked? Was the car overheated? The white smoke sounds like coolant leaking into one or more cylinders.

Mar 13, 2011 | Volkswagen Jetta Cars & Trucks

2 Answers

Car smokes in front when started then goes away


Blown head gaskets cause this symptom.
Also, oil leakage on to the hot parts of your engine can cause this problem.

The smoke can be either antifreeze or oil that accumulated in a plenum or low spot that gets hot when you start your engine.


Jul 08, 2010 | 2000 Buick Park Avenue

3 Answers

After starting car it sputters and white smoke from exhast. I drive the car for 5 min, sputtering the whole time, and turn it off - will not start until it is cranked and gas pressed for couple min. Then...


White smoke is usually from water and water will make the car splutter. Did you get water in your tank at some time. If you have water in your fuel, you will have to drain the tank and refill with good fuel. The engine will run fine once it is hot but if a lot of water goes into a hot cylinder it can cause a lot of damage.

Apr 01, 2010 | 1998 Oldsmobile Intrigue

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