Question about 1999 Suzuki Vitara

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Blue smoke on startup when removing intake manifold it was full of oil 2005 XL7 2.7 engineI was going to replace valve seals but found alot of oil in intake

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  • yadayada
    yadayada May 11, 2010

    is the pcv system working?

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  • 293 Answers

You have worn out piston rings. Excessive blow-by gases goes to the valve train compartment where the PCV valve sucks it into the intake manifold.

Posted on Jun 01, 2009

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Bows white smoke when starting


White smoke means water(antifreeze) is getting into the combustion chamber. A bad intake or head gasket could b the problem but it should smoke all the time. Worn valve stem seals however will cause smoking on initial startup then quit, but the smoke will b light blue. If indeed smoke is white, pull spark plugs one at a time & look for heavy white crust on end of plug, if so that cylinder is getting water in it. Do that to all plugs. Re torquing head or manifold may help but if its high milage almost def need gasket. Heads warp also in that case the head must b milled flat. Valve stem seals can b replaced with head on in some cases by introducing air into cylinder to keep valve from falling into cylinder when keepers are removed. Hope this clears things up a lil.

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Car smoke sometime when I start it up.


Smoke from where exactly? Under the hood? From the exhaust? You need to be more specific.

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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.

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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.

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1 Answer

Chevy van


Smoking issues after warm start up are usually caused by brittle valve stem seals and oil leaks down through the valve guide. These can be changed on the engine without head removal. Just use a air compressor to keep the cylinder full of air with the valves closed then remove the rocker arms counting the number of turns to keep adjustment. With a on car spring compressor remove spring. The valve keepers can be tight in retainer so tapping the retainer with released tension they will break free. Most chevy heads have 2 oil seals a hat type (positive spring seal) and a o-ring seal. With spring removed take both seals off there are very brittle. Replace the hat seal first then install spring with retainer. the o-ring seal needs to stay in retainer and in lower groove then install valve keepers and slowly release the spring pressure, Once spring compressor is removed then tap valve stem with hammer to seat keepers then release air. Also check Intake manifold bolts for proper torque. A loose manifold will also **** in oil bolt torque is 35-40 ft. lbs cast iron 30-35 ft. lbs aluminum manifold.

Nov 05, 2013 | 1992 Chevrolet G20

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Bmw blowing smoke with no loss of power


check your anarobic switch

Feb 18, 2013 | 2005 BMW X5

1 Answer

Execessive smoke with startup visual inspection oil in exhaust


Blue smoke? how does the car run? blue smoke out of the exhaust would indicate a problem either with valve stem seals, worn piston rings...

toyotas are known for that, and if it has alot of miles then its normal

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1 Answer

Blue smoke on startup warm engine


If you have a turbo, a shaft seal may be leaking some oil. Otherwise, the valve seals may be hard or worn enough to pass some oil during 'off' time. As long as it smokes only at startup, there is probably little to worry about until it begins smoking all of the time--then it will be time to replace the leaking seals which can be done without removing the heads. You might try a seal-softener additive in the oil or use 'high mileage' oil which contains seal softener. It also helps loosen sticking rings as well. Hope this helps.

Dec 23, 2009 | 1996 Volvo 850

2 Answers

My 1995 olds royal 88 has blue smoke coming from engine area


Blue smoke is oil and if it's coming from your engine compartment most likely means the gasket on your valve cover either needs to be replaced or it could even be as simple and needing to tighten the valve cover bolts a bit. Oil is leaking from the valve covers and working it's way to your hot exhaust manifold and that is where the smoking is most likely coming from.

Oct 08, 2009 | 1995 Oldsmobile 88

1 Answer

Thick blue smoke. no oil leaks new spark plugs and spark plug wires. checked all cylenders cant figure out why its smoking.


Hi! Chris, There are many causes of oil burning or exhaust smoke. There are three different causes of normal oil burning, 1; worn valve guides (smoking during deceleration), 2; worn cylinders and piston rings (smoking during acceleration), 3; split or worn out valve seal, or damaged intake manifold gasket (smoking all the time). Of course there are several variables in this equation. Sometimes coolant can also get into a cylinder and cause a blueish smoke. If you remove the spark plugs and use a pressure pump on the coolant system (radiator), coolant should leak into the intake manifold or cylinder. Coolant leaking into the intake manifold will leak into several cylinder through the valves. So, what year and how many miles are on the Jaguar?

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