Please HELP - 1st Service Engine Light came on, diagnosed as misfiring, cylinder #3. Changed plugs, wires, then ok for 9 miles, then again light came on, misfiring, blue smoke, did cap and rotor, oil change - ok for about 10 miles, today checked oil and found this white, milky like substance on dip stick? Any ideas - also, engine light back on and blowing a lot of smoke........very worried. any ideas of what's wrong would be Greatly appreciated - supposed to bring to garage tomorrow!! UGH!!!!:disappoin

Could it possibly be coolant getting into the cylinders/oil? Check the coolant level to see if any is "missing."

Most likley blown head gasket

coolant level is ok ...... as for the possibility of blown head gasket, as suggested by marc-o-matic, wouldn't that cause some overheating? it's actually running cold??? I'm sooooo confused. Anyway, thank you both for your ideas!!!
trackertrouble:)

coolant level is ok ...... as for the possibility of blown head gasket, as suggested by marc-o-matic, wouldn't that cause some overheating? it's actually running cold??? I'm sooooo confused. Anyway, thank you both for your ideas!!!
trackertrouble:)


Yes and no if the coolant is low or there is an air pocket the guage can't read properly.(it's a coolant temp. sensor not air temp. sensor)

The reason I mentioned that is the combination of a missfire and milky oil.
Oil turns milky when mixed wilt water/coolant.
You might want to remove and inscect spark plugs,start w/#3
(any sign of water/coolant).
Also the smoke,what color is it,or is it steam/vapor?

the color smoke is mostly blue/white .....always more smoke when stepping on gas pedal. Sometimes, but not always the smell of rotten eggs is present, and sometimes when stepping on gas I get a moment of hesitation......defintely smoke though, not vapor or steam.....lots of smoke on acceleration..... YUCK!!!
Thank you for your input.

The milky white substance in the oil you mention is definitely coolant that is getting into the cyilnders. that is usually the cause of the smoke, too.