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[MartinP]

How much pressure would you find in the camcover?

I have cleaned the oil seperator and the 2 pipes on the front/offside of the camcover.

changed the timing belt and water pump, put it all back together and when I started it up, I had a lookin the oil filler and there was quite a bit of pressure coming out of the filler hole  

I would expect that much pressure to blow the new cam cover seal if left to run  

any ideas??

Martin

[feeutfo]

check breathers not blocked, guide in maintenance section.

[markey mark]

you will get a bit martin on a four pot ! how much you talking about mate  :-/

[Marks DTM Calib]

Did you remvoe the throttle body and clean it paying attention to the small breather drilling (which is what is used on idle).

You get what appears to be more on the 4 pots because

1) You get some windage off the cam sat directly below the filler.

2) They have slightly more blow by gasses

Bottom line is, if the breathers are fully clean, open and working then the cam seal is safe as the pressure cant build because it has somewhere to go

[MartinP]

Thanks for comments.

Took the throttle off completely and cleaned thoroughly, removed the banjo breather from the rear of the plenum, (totally blocked) cleaned and replaced.

Cleaned the blocked oil seperator

Checked the tracks through the cam cover were open

How much pressure is too much?

When I place the oil filler cap over the hole, there is resistance, if you dont close the hole over it will puff like a steam train  :-?

[Abiton]

How many miles has the engine done?  Has it had a hard life (lots of short journeys)?

I think that there must come a time when the little 'small breather' jet just isn't up to the job of removing all the pressure (at idle) if the blow-by etc. of the engine is getting significant.  :-/

[ngrainqey]

How many miles has the engine done?  Has it had a hard life (lots of short journeys)?

I think that there must come a time when the little 'small breather' jet just isn't up to the job of removing all the pressure (at idle) if the blow-by etc. of the engine is getting significant.  :-/

i'v had breather problems (when i got mine it was prone to stalling/cutting out when it dropped out of gear on the auto-going down hills) going on a long run to try and blow it out a bit might help

[MartinP]

How many miles has the engine done?  Has it had a hard life (lots of short journeys)?

I think that there must come a time when the little 'small breather' jet just isn't up to the job of removing all the pressure (at idle) if the blow-by etc. of the engine is getting significant.  :-/

135k and it hasn't been maintained well enough for some time.

[Abiton]

Has the IACV had a good cleanout?

That's the only other pathway, I guess, if the small breather's doing all it can for a given intake vacuum/crankcase pressure; any excess gas flow has to go through the large breather and through the IACV.

What revs does it idle at?  

[MartinP]

Right, a bit happier now,

If I take the larger pipe from the cam cover to the inlet pipe above the throttle body and blow down it, I can feel airflow through to the oil filler hole.

If I blow the other way into the throttle body/air inlet isde, I have unrestricted airflow into the inlet pipe.

ergo;

all the pressure in the cam cover should be able to release and recycle through theinlet plenum

I think

[MartinP]

Has the IACV had a good cleanout?

That's the only other pathway, I guess, if the small breather's doing all it can for a given intake vacuum/crankcase pressure; any excess gas flow has to go through the large breather and through the IACV.

What revs does it idle at?  

Revs were a bit up and down, until I found the vac pipe off the throttle body behind the water pipes. Then immediately settled down, steady at about 750rpm