Just changed spark plugs and ?????
Discussion
Not the left two but the right two on a four pot engine were dripping with black oil. The strange thing is I changed my oil only two days ago complete with an engine flush and upon inspecting the dipstick the engine oil is still nicely golden?
Now I'm no mechanic but the spark plugs are igniting the petrol and oxygen in the chamber so how is oil getting into the chamber, not getting burned up and through the spark plug thread/seal and onto the white bit? The oil was dripping off the lower non white bit too but this has me puzzled.
Upon starting the engine a puff of white smoke came out as the engine burnt off the oil so why hasn't it been doing this all along and how has the oil got through the chamber and onto the spark plugs?
I'm sure it will be something simple but interested to know what...
Now I'm no mechanic but the spark plugs are igniting the petrol and oxygen in the chamber so how is oil getting into the chamber, not getting burned up and through the spark plug thread/seal and onto the white bit? The oil was dripping off the lower non white bit too but this has me puzzled.
Upon starting the engine a puff of white smoke came out as the engine burnt off the oil so why hasn't it been doing this all along and how has the oil got through the chamber and onto the spark plugs?
I'm sure it will be something simple but interested to know what...
What car is it? I changed my Fiesta ST oil and it was impossible to see the oil on the dipstick so I had to drain what turned out to be a serious overfill and put back in the recommended capacity rather than relying on the dipstick (not me, the actual one).
Overfill will force oil past the rings. I suppose it depends which end the oil pump is.
Alternatively, have you got some EGR system that burns off oil from the PCV valve?
Overfill will force oil past the rings. I suppose it depends which end the oil pump is.
Alternatively, have you got some EGR system that burns off oil from the PCV valve?
I'll have to take your first answer please gentlemen. First poster has hit the nail on the sooty head.
When I first bought it I overfilled before a big trip which explains why the oil is jet black and not golden like the new oil.
Problem solved.
If only PH collective could design female robot companions life would be so good.
When I first bought it I overfilled before a big trip which explains why the oil is jet black and not golden like the new oil.
Problem solved.
If only PH collective could design female robot companions life would be so good.
pimping said:
I'll have to take your first answer please gentlemen. First poster has hit the nail on the sooty head.
When I first bought it I overfilled before a big trip which explains why the oil is jet black and not golden like the new oil.
Problem solved.
If only PH collective could design female robot companions life would be so good.
If it's causing oil to blow up, out of the cylinder and past the seal & thread onto the plug's insulator you have bigger problems to worry about.When I first bought it I overfilled before a big trip which explains why the oil is jet black and not golden like the new oil.
Problem solved.
If only PH collective could design female robot companions life would be so good.
Dr G said:
Knackered cam cover gasket leaking into plug holes then dripping down when you removed the plugs.
Yeah, have you ruled this out before you assume that the oil was definitely inside the combustion chamber before you changed the plugs? You mentioned you saw a puff of smoke when it was burned off which you don't usually see. That would seem to imply that there isn't usually oil in your cylinders but that some dripped in when you changed the plugs...
Oil breather probably vents near that end and oil vapour is settling in the 2 plug wells. Or the rocker cover is weeping, or the oil filler cap doesn't seal very well.
No way is it coming from the sump, past the rings, through the combustion chamber, past the spark plug threads and soaking the ceramic. No way.
No way is it coming from the sump, past the rings, through the combustion chamber, past the spark plug threads and soaking the ceramic. No way.
Gassing Station | General Gassing | Top of Page | What's New | My Stuff