November 9, 2011, 10:07 pm
I've had a closer look today and I believe that the oil patches around the engine bay look like they all came from the rocker cover at some point in the past.
I wiped around the edge of the cover at 10am this morning and the slightest dribble had appeared by 12.30.
As said, I only recently changed the gasket and tightened all bolts up in sequence to the correct torque 7nm
I was careful to seat the gasket in the guide correctly.
I am now wondering if oil is only being forced out because of a blocked/cracked PCV valve/hose. I've heard it's hard to get to and I'm not sure where it is.
I'm less worried about the head gasket now because a mate says he couldn't smell oil or petrol in the coolant, there was no water in the oil (cream) and said that the white steam from tailpipe wasn't constant and was probably condensation... having said that I'm still taking it for a Compression test next week.
I am now pretty sure I need a new cat, because he said that he could hear a suction noise/draw back of air through the tailpipe as the throttled is released.. and I already found that both O[sub]2[/sub] sensors oscillate.
A new cat is £140 and I'll try and fit it myself, but I don't want to do it if it's only gonna be destroyed again by the engine... (I've never noticed overheating and the dash temperature gauge has never gone above normal). The car's done 69000, is it just about that time for a new Cat?
I noticed on last year's advisory note "Front Flexi Exhaust has minor leak of Exhaust gases"... could this constitute cat failure or water ingress?
So what does a coolant pressure test entail? is it expensive to get done at a garage? Is it something a DIY mechanic could do?
Also, on a drive down to Stansted on Saturday, I noticed every half an hour or so my headlights would dim momentarily (I have a DTC 9318, Battery Voltage Low stored on the dashboard diagnostic, but no battery light, could these be related?)
Is there anything else relating to any of the above I should look for?!!! Sorry to run on and on!