pessure in rocker cover

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top-cat

top-cat

Well-Known Member
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Doncaster area
got quite a bit of pressure in the rocker top, ive disconected all the breathers and its still the same. All the breathers are clear. I even took the turbo off the manifold to see if the problem was related, ive tried it without the air filter in, nothing seems to make a diference, anyone got any ideas?
 
All engines breath, what do you call to much?
Maybe worth ticking over and removing rocker cap and see how much pressure is there?
Lets us know and i will try mine and see if its the same.
Air filter and turbo wont cause breathing problems, its really going to be down to worn bores, or just worn out altogether.
How many miles?
If its real bad i would highly recommend a remote oil catch tank for the breather pipework because if its gets to run on its own fumes you are fooked!

Lynall
 
cheers. ive had a 700 mile round trip green laning, ive now got 2 breathers to air and it breathing that much there is oil everywhere. its almost as though there is far to much oil in it but i know there isnt (according to the dipstick) it is still running fine and there doesnt seem to be any loss in power what so ever
 
jamesmartin said:
either rings/bores are worn or 1 or more exhaust valves arent opening fully or you have a leak in vacuum pipe /servo
Click to expand...
im interested in what you say regarding vacuum/servo James.
If i hold the 90 still for a short time on the brakes and then move and apply the brakes again i have the feeling of no servo assistance as the peddal is hard. could the servo pump be my problem?
Ive no idea what the millage is as i changed the engine a year ago but didnt see the car that it came from. it has alway breathed a little and i fitted a second cyclone between the crank case and the rocker top with a breather to a bottle but never had any oil so took the bottle away.
The brake problem is recent and before laning last weekend i removed the breather to the filter box and extended it to the underside, sealing off at the filter box.
 
top-cat said:
im interested in what you say regarding vacuum/servo James.
If i hold the 90 still for a short time on the brakes and then move and apply the brakes again i have the feeling of no servo assistance as the peddal is hard. could the servo pump be my problem?
Ive no idea what the millage is as i changed the engine a year ago but didnt see the car that it came from. it has alway breathed a little and i fitted a second cyclone between the crank case and the rocker top with a breather to a bottle but never had any oil so took the bottle away.
The brake problem is recent and before laning last weekend i removed the breather to the filter box and extended it to the underside, sealing off at the filter box.
Click to expand...

Now you tell us :rolleyes::rolleyes::rolleyes:
 
jamesmartin said:
leak could be in servo ,pipe work ,as well as pump top cover seal
Click to expand...
just thought that myself,
The engine was swaped a year ago with the same breathing problems, spewing oil out of the oil cap, but the bores where very badly worn, although again it ran well.
it should be easy to check pipes but i suppose the servo will have to be stripped to check. I assume there will be a diaphram in there that could have split.
Its given me another avenue to check, When i asked the question on the old engine plenty of peeps advised checking breathers or bores, the bores seemed over worn so i just swaped it.
The defender has just clocked 120000 and i believe that engine was original. ive kept it as i would like to rebuild it with new pistons, shells etc, what sort of money would i expect to be paying for parts and machining?
 
my 200 di s3 started to be a pain to start, then noticed back pressure, i routed the crank breather down under the chassis and all was well, then a week ago i started getting fumes into the cab so i fixed the breather pipe to the threaded hole on the inlet manifold.
Mint no smell, no embarrasing smoke clouds when i came to a stop, sorted i thought, then whil,st driving at a steady 55, i knocked the bottom end out of it,what a ****ER :Cry:
 
****ant said:
my 200 di s3 started to be a pain to start, then noticed back pressure, i routed the crank breather down under the chassis and all was well, then a week ago i started getting fumes into the cab so i fixed the breather pipe to the threaded hole on the inlet manifold.
Mint no smell, no embarrasing smoke clouds when i came to a stop, sorted i thought, then whil,st driving at a steady 55, i knocked the bottom end out of it,what a ****ER :Cry:[/QUOTE

If i am reading this right you connected the engine breather system to the inlet manifold running at up to one bar pressure?


Lynall
Click to expand...
 
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