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flashing light means dont drive or u can or will cause more damage to vehicle --[the computer is registering a damage causing malfunction] can be reason oil on plugs --need to have code read to properly pinpont problem--as to oil on plugs multi reasons such as bad oil seals on valve--valve bad-bent-burnt---head damage-gasket-cracked-warped---piston-cylinder-rings etc--need to do a compression test to determine the extent of damage
U got a damage oil seals in the plug housing!
Replacing it, needs to take off the VALVE COVER and spark plugs.
Check how the seals seat on ur valve cover, sometimes it needs to be cleaned up and put a silicone gasket maker, that will seal everything!
The oil around the plug may be a sign that the valve-cover needs a new gasket. Oil on the plugs can cause a misfire but it is important that you check everything over. The misfire could be due to defective wires, boots, coils, spark-plug/s, injector/s, and so much more. Take a look at the cars maintenance history, Maybe it is over due for a complete tune-up or oil change. The car is 11years old, how many miles are on it? How was it running before this?
Unfortunately the check engine light could be caused by hundreds of things and yet it could have something to do with your changing of the plugs. Do me a favor and take the car to your local auto parts store and they will check the code for the engine light for you for free. Bring that code back here and I will help you figure out what is causing the light and the slugish engine. Sorry for your problem but I'm sure I can help you get it fixed. Thanks for using FixYa!
For you to figure out if the spark plug fires, you need to pull it out one by one while running. Make sure that you are wearing protective gloves for this one. Normally for spark plug issues the idle will be sort of erratic and fells as if the revs is slow to go up when teh gas is stepped on. For the oil, check for leaks around the engine and smoke at the exhaust. Oil may enter the combustion chamber and burn causing a dark or bluish smoke. Also check the coolant in your radiator if oil gets in. For these problems you need to replace some oil seals and some oil ring. The low idle can be caused by faulty wiring since you have an EFI engine. Check the connections if they are loose. Also check the fast idle control valve if you can adjust the idle or it may need cleaning
Yes the oil can cause the car to lose spark, the oil leak could be caused by the valve cover gaskets around the spark openings, but 9 times out of 10 it is the spark plug tube "O" rings. The top of the valve train comes off of the head, the "O" rings are between the two halves, that will fix the oil leak.
If the odor is not heavy gasoline, then they appear to be oil fouled. The cheap fix is to buy at any auto parts store oil burning plugs or sleeves, these will keep the spark plugs slightly further out of the cylinder, out of the oils way, and should provide a reasonable resolution.
Check the PCV valve and hose, if they clog they will cause oil to enter engien cylinders. keep me posted