Question about 2000 Chevrolet 3500

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I have a whooping noise coming through my filter tubing sounding like exhaust manifold leak like a blown gasket sometimes it will stop now my oil pressure is dropping down to 0 after my oil get warm but he engine doesn't knock

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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.

Dec 08, 2014 | 2000 Kia Sephia

2 Answers

New radiator still losing antifreeze


You could have a leaking water pump or blown head gasket

Apr 20, 2014 | 2002 Dodge Caravan

1 Answer

Oil leak above starter and hits exhaust manifold


Rocker cover gasket must be leaking. Sometimes just tightening the cover bolts will stop it. Otherwise replace the gaskets.

Jan 28, 2014 | 2000 Chevrolet S-10

1 Answer

I have a 2009 nissan sentra that I have to keep adding oil to but its not leaking anywhere can someone please help


Check the antifreeze, if it looks like chocolate milk you have a blown head gasket and the oil is leaking into the cooling ports.
If you have smoke coming from your exhaust, your head gasket or lifter seals are blown and letting oil into the cylinder.
Check your tailpipe for oil residual
jack your car up and look under the engine for any leaks.
Check the oil drain plug gasket
Check the oil filter. Sometimes when removing an old filter the rubber o-ring seal sticks onto the engine, and when your install the new filter the doubled up o-ring will leak.

Nov 11, 2013 | Cars & Trucks

1 Answer

2005 Chevy Equinox leaking oil out of exhaust manifold 107,000 miles. Just had head gasket replaced and heads rebuilt in which one was cracked. Mechanic puzzled by this because there is no smoke or odor...


Take it back and have the heads redone. Sounds like they left oil seals out or they didn't find a crack in the other head. It is very unusuall for oil to come from the exhaust and not smoke. And if the oil is coming from the exhaust gasket ,then the mechanic also didn't do his job right. This gasket should be tight, no air or anyhting else should be coming from between the engine and exhaust manifold. The never timed it is impossible, as it has to be timed to run. I would probably take it to anoher shop, explain what has gone on, get an estimate to fix it. And demand the other shop pay for it.

Aug 24, 2011 | 2005 Chevrolet Equinox

1 Answer

I have oil leaking out of the exhaust manifold stud on my 2003 3.0 Saturn Vue. As crazy as this sounds I cleaned the whole area fully and when the motors starts you can see oil and bubbles coming around...


Apperently one of your gaskets has gone bad. Do you hear any exhaust noises, like ticking? I suspect the intake manifold gasket is leaking and the oil is running down to the stud.

Nov 27, 2010 | 2003 Saturn VUE

1 Answer

WHERE TO LOOK FOR EXHAUST LEAK


There are several areas to check for possible exhaust leaks. i will list them below.

1. Exhaust manifold gaskets - This will be the most common area. There is a gasket that separates the block from the exhaust manifold. these gaskets can fail, thus, causing a exhaust leak at the manifold.

2. Lower manifold gasket(donut gasket) - This will be a possible leak spot as well. This small circular gasket is placed in between the upper exhaust pie and the lower side of the manifold. It basically separates the pipe from the exhaust manifold.

3. Exhaust pipe - The entire pipe can rust overtime, thus, creating small holes along the pipe structure. These holes will cause the exhaust to leak ,thus, filling the vehicle will moderate fumes and causing louder than normal engine sounds during revving.

4. Muffler - This component can also deteriorate to the point that it cannot filter out the noise. It will also cause leaks as well.

You will find the leak in one or all of the areas stated above in the list.

Jun 13, 2010 | 2006 Chevrolet HHR

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