1 problem or multiple???
Discussion
I have a 318ci (1995cc valvetronic 4 cylinder) and have had an oil leak for a while now with the occasional puff of blue smoke on or just after startup. I had the cam cover gasket and oil filler cap replaced but it didn't make any difference.
My question is is it one problem or more likely two because of the leak AND blue smoke???
The car's only done 50 000 miles and had the timing chain replaced at about 43 000 miles by previous owner with FSH.
Any ideas????
My question is is it one problem or more likely two because of the leak AND blue smoke???
The car's only done 50 000 miles and had the timing chain replaced at about 43 000 miles by previous owner with FSH.
Any ideas????
Blue smoke is generally caused by excessive fuel or contaminated fuel, if it was white you'd have big problems as it would indicate burning oil. The leak is possibly from the oil filter seal if it is a paper element type. Too many forget to change them when they replace the filters. Check whether or not is has an EGR valve as it could be the source of overfuelling and or blue smoke on start up.
adyady1066 said:
Blue smoke is generally caused by excessive fuel or contaminated fuel, if it was white you'd have big problems as it would indicate burning oil.
Blue smoke is indicative of burning oil. Excessive fuel gives black smoke, and white smoke can be caused by coolant entering the combustion chamber (or unburnt fuel in a diesel). You really should know this given the profession you have listed in your profile.A puff of blue smoke after starting and engine is almost certainly caused by worn valve stem seals and possibly worn valve guides, which let oil dribble down into the inlet ports when the engine is stopped.
andy187 said:
I have a 318ci (1995cc valvetronic 4 cylinder) and have had an oil leak for a while now with the occasional puff of blue smoke on or just after startup. I had the cam cover gasket and oil filler cap replaced but it didn't make any difference.
My question is is it one problem or more likely two because of the leak AND blue smoke???
The car's only done 50 000 miles and had the timing chain replaced at about 43 000 miles by previous owner with FSH.
Any ideas????
i would go for valve stem oil seals as op said oil can get down them when the engine is stopped, however the leak and the smoke could be related, IE if the engine breather PCV system is blocked presure will build up in the sump and can/will cause a leak or blow a seal,My question is is it one problem or more likely two because of the leak AND blue smoke???
The car's only done 50 000 miles and had the timing chain replaced at about 43 000 miles by previous owner with FSH.
Any ideas????
Mr2Mike said:
Blue smoke is indicative of burning oil. Excessive fuel gives black smoke, and white smoke can be caused by coolant entering the combustion chamber (or unburnt fuel in a diesel). You really should know this given the profession you have listed in your profile.
A puff of blue smoke after starting and engine is almost certainly caused by worn valve stem seals and possibly worn valve guides, which let oil dribble down into the inlet ports when the engine is stopped.
+1A puff of blue smoke after starting and engine is almost certainly caused by worn valve stem seals and possibly worn valve guides, which let oil dribble down into the inlet ports when the engine is stopped.
Skyedriver said:
Mr2Mike said:
Blue smoke is indicative of burning oil. Excessive fuel gives black smoke, and white smoke can be caused by coolant entering the combustion chamber (or unburnt fuel in a diesel). You really should know this given the profession you have listed in your profile.
A puff of blue smoke after starting and engine is almost certainly caused by worn valve stem seals and possibly worn valve guides, which let oil dribble down into the inlet ports when the engine is stopped.
+1A puff of blue smoke after starting and engine is almost certainly caused by worn valve stem seals and possibly worn valve guides, which let oil dribble down into the inlet ports when the engine is stopped.
Gassing Station | Engines & Drivetrain | Top of Page | What's New | My Stuff