Vauxhall Owners Forum banner

1 - 9 of 9 Posts

·
Registered
Joined
·
12 Posts
Discussion Starter · #1 ·
I took my inlet pipes off tonight and found them full of oil. The oil is being blown through the CAC and turbo and back into the engine. Also noticed injector 4 has a nice covering!

The oil has come from the breather pipe on the rocker cover. Looking it up it seems to suggest crankcase pressure. What can cause this? .. and as a result what damage could it have caused?

Its on a Diesel Astra by the way .. DT engine.
 

·
Registered
Joined
·
12 Posts
Discussion Starter · #2 ·
I've just removed the oil cap whilst the engine is running and there is ALOT of air coming out of the engine..

What does this mean?
 

·
Registered
Joined
·
2,847 Posts
Worn rings cause pressurisation of the sump

With engine running pull out the dipstick, if lots of smoke comes blowing out - not a good sign :(
 

·
Registered
Joined
·
12 Posts
Discussion Starter · #4 ·
Theres no smoke at all??
Could it also be the head gasket?

Never done it before but considering stripping it down to have a look at the gasket and pistons.. will it be easy to identify worn rings?
 

·
Registered
Joined
·
12 Posts
Discussion Starter · #6 ·
No I haven't done a compression test.. haven't got a tester.

Sorry for my ignorance but what will this show me?
 

·
Registered
Joined
·
12 Posts
Discussion Starter · #8 ·
The air is being blown out of the rocker cover. "the oil filler cap"
How do worn piston rings push air up there?
 

·
Registered
Joined
·
12 Posts
Discussion Starter · #9 ·
Just been out and checked the crankshaft pressure again.
There is a small amount of air coming out of the dipstick but a trivial amount I would associate with worn rings.
But the air flow out of the oil cap on the rocker cover could double as a mobile hair dryer!!
 
1 - 9 of 9 Posts
Top