Question about 2002 Dodge Intrepid
Blue smoke always means oil burning, place cardboard under your car at night probably entire engine area, it will steer you into the right direction, with it smoking it has been working extra hard in that area, so look forward to replacing something mechanical. Good Luck
Posted on Mar 08, 2009
No it is not likely a head gasket (in my opinion). I think your piston rings are worn - or have lost their temper (stiffness). Has the car ever been overheated? That would have been when it happened. This used to be a pretty common problem with old engines. We used to just keep running them. If your car is using oil, just make sure you keep it replaced. Make sure that the oil does not get cloudy, and that you don't have oil in the radiator. That would signify that you have a head gasket problem, and then the car would need immediate attention. If you don't have any of the symptoms of a blown head gasket, I see no reason why you could not continue to run the car the way it is. Good Luck
Posted on Aug 13, 2008
The most likely cause is a blown head gasket. If that is the case then it may be priced from 500 to 1500 to fix the vehicle.
Posted on Aug 06, 2008
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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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