My 300 TDI has around 150k miles and a few months ago I noticed some pressure in the crankcase not enough to blow out the dipstick but it definitely blows out of the filler cap along with smoke/oil mist. I changed the filter for the breather and removed the pipes and blew through them to check for blockages. After this I assumed either a problem with valves or piston rings but recently I noticed I am losing coolant about 1 pint per fortnight there are no coolant leaks and no sign of coolant in the oil however once I noticed steam from my exhaust so im assuming head gasket, the whole block is bathed in oil. Would a head gasket cause combustion gasses to enter the crankcase? Apreciate any replies
jamesmartin
Well-Known Member
yes it could do
tetsu0san
Active Member
I was loosing a slight amount of water and there were no obvious cause so I did the head gasket and that fixed it. However I wasn't having pressure issues.
It's worth doing anyway, when you take the head off you can see the state of the bores and then decide if a rebuild is needed.
It's worth doing anyway, when you take the head off you can see the state of the bores and then decide if a rebuild is needed.
No buddy, smokey mornings yes but not crankcase pressure, but if taking head off I would do them anyway,
rover86
Member
I've just done my head gasget on an engine which, according to the reciepts i got with it, has done just over 150000 km, the engine had got hot due to a heater hose split, you can still see the honing marks in the bores, so 150000 miles is not that much more. I bought the RR as a non runner but it runs like a clock (without the ticking) now, no crank pressure at all. Cheapest option is a £27 or so gasget set & do the head. Just follow the head tightening sequence to the letter,.
