Question about 1988 Toyota Supra

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What are the symptoms of worn piston rings aside from exhaust smoke?

My Supra smokes pretty bad out the tailpipe. A friend of mine said he thinks its unburnt oil dripping into the turbo or something. Im hoping its the turbo and not piston rings, im just wondering if there is any way to differentiate like a noise it would make or something?

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  • Toyota Master
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Has it ran hot at anytime , could be valve seals

Posted on May 16, 2014

Testimonial: "no it hasn't had any problem with overheating or anything"

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Posted on Jan 02, 2017

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2007 ford 4.0 v6 why are all my spark plugdls on passenger side oil soaked but drivers side is fine doesn't smoke did compression test all good not a blown intake gasket had it checked anyone know?


Hi Josh:
I'd put fresh plugs in it and drive it for a week, then check the plugs.
Sometimes you will get high compression readings that are not valid because the rings are soaked in oil so they think they are sealed when they are not.
With the engine off, you could try removing the oil filler cap when the engine is hot, then restart it. A little vapour is OK, a lot indicates bad valve guides, head gasket,or ring blowby.
Also, try checking inside the exhaust tailpipe. If it is oily sooty it is also an indication of possible ring problems.
Review the maintenance history. How many miles on the engine? Could be the engine is getting tired.

Jan 31, 2016 | Ford Cars & Trucks

1 Answer

Smoke tailpipe /blue/white


Blue smoke is the result of burning engine oil, plain and simple. A high mileage engine will have worn cylinders and piston rings that allow for increased "blowby" with every cylinder firing. Exhaust gasses will sneak past the piston rings and momentarily pressurize the crankcase with each cylinder firing. The puff of gasses in the crankcase blows some oil returning from the valve train back into the valve train area in mist form where it is sucked up by the PCV and introduced to the intake manifold where it is mixed with incoming air to be burned in the cylinders along with some fuel. And that is how blue smoke happens...

The solution is an engine rebuild or a different engine in better shape. The latter is the least-cost solution.

A defective PCV *could* result in more oil burning, but I think not as much as in your case. The keyword is "'99 Plymouth Breeze."
Age is not a friend to the Plymouth Breeze.

Hope this helps you choose what to do next!

Feb 11, 2015 | 1999 Plymouth Breeze

1 Answer

I'm looking to purchase a used car. I've been doing online research and saw this webpage http://www.usedcarsmells.com . They talk about exhaust color and smells. Is it true that you could tell a lot about...


Yes this is correct, you can get important information from the colour of smoke from the exhaust:

Blue/Gray Smoke: Blue/gray exhaust smoke is an indication of oil burning in the combustion chamber. These are possible symptoms and causes:
Valve Seals: Leaking valve seals will cause blue/gray smoke at startup because oil leaks past the seals into the cylinder after the engine shuts down.
Valve Guides: Excessive clearance between the valve stem and the valve guide allows oil to leak past the gap into the cylinder.
Piston Rings: Worn or damaged piston rings will cause blow-by resulting in blue/gray smoke.
Worn Cylinder Walls: Worn cylinder walls cause blow-by resulting in blue/gray smoke.
PCV System: A stuck closed PCV valve will cause excessive crankcase pressure resulting in blue/gray smoke.
Black Smoke: Black exhaust smoke is an indication of a rich fuel condition. These are possible causes:
Fuel Injectors: A leaking or dripping fuel injector will cause a rich fuel condition.
Fuel Pressure Regulator: A stuck closed fuel pressure regulator will cause a rich fuel condition.
Fuel Return: A restricted fuel return line will cause a rich fuel condition.
White/Gray Smoke: White exhaust smoke is an indication that coolant is burning in the combustion chamber. These are possible causes:
Cylinder Head: A crack in the cylinder head (around the coolant jacket) will cause coolant to enter the combustion chamber.
Engine Block: A crack in the deck of an engine block near the coolant jacket will cause coolant to enter the combustion chamber.
Head Gasket: A damaged or blown head gasket will cause coolant to enter the combustion chamber resulting in white/gray smoke coming from the tailpipe.

Jan 17, 2015 | Cars & Trucks

2 Answers

Why is my 2000 kia sephia blowing blue smoke from the tailpipe. it has 86,000 miles. the check oil warning light is on even though the dipstick reads full.


The most common cause of blue exhaust smoke is oil leaking past engine seals and into the cylinders where it then mixes and burns with the fuel. This is most frequently seen in older or high mileage cars with worn seals and gaskets. It only requires a very small amount of oil leaking into the cylinders to cause excessive blue exhaust smoke.

Blue exhaust smoke only at start-up can indicate worn piston seals or damaged or worn valve guides which may also cause a rattling noise. An external engine oil leak can drip onto hot engine and exhaust parts causing what appears to be blue exhaust smoke. Other possible causes of blue exhaust smoke include: piston wear, worn valve seals, a dirty or non-functioning PCV valve, worn piston rings, an intake manifold gasket leak, worn engine oil seals and possibly even head gasket failure.

Oil leaking into the cylinders can cause a rough idle, misfire and fouled spark plugs. In addition, a reduction in power and oil loss can be indicators that the blue exhaust smoke is caused by an internal engine oil leak. Internal engine oil leaks can also allow fuel to mix with the oil in the crankcase which will degrade the oil and prevent it from adequately protecting the engine.

Operating a car with a severely dirty oil filter, air filter or improperly functioning PCV valve can also sometimes result in engine oil blow-by, oil loss and blue exhaust smoke. Periodically checking the engine oil level with the oil dip stick will indicate if there is excessive oil consumption. Higher viscosity engine oil can sometimes temporarily reduce the amount of blow-by; however, this is not generally recommended. Excessive blue exhaust smoke indicates a possible internal engine oil leak that should be inspected by an ASE certified mechanic.

Dec 08, 2014 | 2000 Kia Sephia

2 Answers

What could blue tailpipe smoke be from?


Your issue could be a few things. Simplest first would be the PVC valve. Other issue would be valve seals, valve guides or piton rings. The blue smoke is from your vehicle burning oil

May 19, 2014 | 1988 Toyota Supra

1 Answer

Smoke coming out of tailpipe


From youe description the problem with this smoke (white/grey smoke) is oil getting into the combustion chambers through worn valve guides or worn piston rings. Worn piston rings can be checked by using compression tests on eash cyclinder.
Worn valve guides require the cyclinder head to be removed to replace valve guides.
Worn piston rings requires a major engine overhaul and in this case it maybe better to get a reconditioned engine.

Mar 31, 2012 | 1995 Jeep Grand Cherokee

2 Answers

Blue smokes come out tailpipe when i start the car but stops afte


Helllo there
Symptom: Gray or blue smoke from the exhaust. You notice gray smoke coming from the exhaust when you start your car. The smoke may or may not disappear after the car is warmed. If it is, it is less noticeable. The smoke may have a bluish tint to it. Possible causes:

  1. The engine's piston rings may be worn.
    The Fix: Replace piston rings. (Generally not a DIY job)
  2. The engine's valve seals may be worn.
    The Fix: Replace valve seals. (Generally not a DIY job)
  3. Damaged or worn valve guides.
    The Fix: Replace valve guides. (Not a DIY job)
Symptom: Engine uses more oil than normal, and there is some smoke from the exhaust. The oil level is low between oil changes. It appears that the oil is being burned by the engine because of the smoke in the exhaust. You may or may not notice the engine doesn't have the same power as it used to.
Possible causes:

  1. The PCV system is not working properly.
    The Fix: Replace PCV valve.
  2. The engine may have mechanical problems.
    The Fix: Check compression to determine engine condition.
  3. The engine's piston rings may be worn.
    The Fix: Replace piston rings. (Generally not a DIY job)
  4. The engine's valve seals may be worn.
    The Fix: Replace valve seals. (Generally not a DIY job)

Jun 01, 2010 | 1989 Buick Electra

3 Answers

Why does my honda accord smoke reel bad


This is either worn valve stem seals or worn out oil rings. Have someone follow you if the car smokes more as you release the throttle on deceleration it is most likely valve stem seal if it smokes more on acceleration it is worn oil piston rings. If the smoke is white you have a blown head gasket blue smoke means burning oil, black smoke means too rich (to much gas reaching motor)

Jan 05, 2010 | 1991 Honda Accord

3 Answers

What would cause smoke to come out the exhaust pipe


WHITE SMOKE IS BLOWN HEAD GASKET. BLUE SMOKE ENGINE BURNING OIL.DUE TO WORN PISTON RINGS AND WORN VALVE GUIDES.BLACK SMOKE EXCESSIVE RICH MIXTURE.CLOGGED AIR FILTER. FUEL PUMP PRESSURE TOO HIGH.SEVERE MISFIRE.LOW ENGINE COMPRESSION.

Sep 28, 2009 | 1998 Chrysler Sebring

1 Answer

3.3L engine jumped timing


sound like compression ring gone pressure goes in oil if noise i dont think it worth to fix that motor a good second hand one there gone engine normally hope it FIXYA our problem thanks pierre

Jul 04, 2008 | 1999 Dodge Grand Caravan

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