The oil level on my car has always been just over the H mark on the dip stick. The dip stick is an after market one so i have always ignored it. The garage changed the oil when they did the clutch and they put it at the same level. Took the car out last night and gave it some stick, my oil pressure was reading slightly lower than normal on the way home. Got to the car today and there was a trail of oil drips up to where its parked. Checked the bottom of the car and there was a 6 inch pool of oil. Oh dear. Opened the bonnet and found that the dip stick and poped out and had lost oil that way. Phew!

 

Checked the oil level and its now about 3 quarters high. Fair enough I thought. Must pay more attension to gauges! Put a tiny amount of oil back back in and pushed the stick in firmly. If it comes out again I will have to get a new dip stick I think.

 

Would anything else cause this other than too much oil and maybe not so good rubber seals on the dip stick?

could be the bottom end pressurising have a look for funkysi's post with regards to compression check.

 

he had a simular problem and ended up having to get another engine but yours could be much simpler than that. so don't panic just yet!

i bet he wished he never asked now!

It it was then i would have very high oil pressure right?

 

Well the oil pressure is normal, has been there for about a year. It only went low last night due to oil loss. I warmed it up and revved it up, and seem fine now.

 

Going to mfn later so will check it again

The bottom end being pressurised would have no impact on oil pressure, the pressure is caused by worn piston rings.

 

Baz

Faulty PCV valves could also lead to high pressure in the crank case, forcing out the dipstick.......

 

Richard

mmm still doing it, only if i pass roughly 5k rpm tho

Drop the oil level and moniter it.

 

I have this problem sometimes at work when the boys put too much oil in, we call it blowby. the oil pressure is fine but the blowby is high and the computer will shut down the engine as a safety measure.

 

If it still does it after you drop the oil level then you might have other problems.

It could also be a rubbish after market dip stick. Can anyone lend me a tt stock one?

gonna do a compression test and if thats ok will get some new pcv valves and hoses.

 

What should they be, about 100psi per cylinder?

gonna do a compression test and if thats ok will get some new pcv valves and hoses.

 

What should they be, about 100psi per cylinder?

 

Around 140 - 150 I think.

yeah just had a search. 160 is good, 140, some wear / ok, below 100 = bad

 

on a tt that is, nas will be different

 

not looking forward to it!

Just remembered I had a small amount of oil coming out of the dump valves, they were spraying it onto my pipes. So must have got oil going in the intake. If oil was getting past the rings into the cylinders it would be smoking all the time as the oil would be burnt right (its not)? If it was combustion gas going back into the sump due to worn rings then maybe this would cause the dip stick to pop - i get it now.

 

Oil in the intake suggests pcv valves more likely right? As worn rings wouldnt put oil into the intake. Or am i being a mong here!

:mad:

Worn rings will put oil into the intake through the breather system.

 

Baz