by bortaf » Fri Jul 23, 2021 9:27 pm
It could be blocked ? then the pressure will have to get out by blowing it out? does the ball bearing inside it rattle when you shake it ? the cap should breath as well so check if that's blocked if not suspect excess crankcase pressure possably due to piston ring blowby? compression test will show if thats a problem, i take it the oil level is OK and not overfull ?
Current fleet
Mk7 transit ambulance
Mk1 tourneo connect
Mk1 Mondeo 1.8 STD
Mk5 fiesta 1.25
Fusion 1.4TDCi