Vehicle has oil in header tank (lots of it ) advice pls

[BABASON]

Vehicle has oil in header tank – a lot and signs of oil around rocker cover on the right at the back of engine where the crankcase ventilation pipe comes out of the rocker cover and goes into the air intake hose after the air mass sensor engine oil cooler has been replaced and cooling system flushed.

Vehicle was driven for 2 weeks did not miss a beat, but oil is back in header tank and signs of oil loss around breather hose again.

I drained engine oil, no signs of water in engine oil

No signs of overheating or blown head-gasket.

I vaguely remember something about 271 engine heads being porous is this an indication of this or am I going in the wrong direction. Is there a MB document concerning this ?

The oil in the header tank looks like engine oil rather than gearbox oil I have tried to look for a valeo sticker cant find one on the radiator. Does any one have a document for determining if this vehicle falls into one that might have a radiator issue. Does this sound like one.

Or a document concerning porous heads, any Ideas any further checks I could carry out.

I am scratching my head on this one and would really appreciate some thoughts or direction

 

[television]

Not good news,,yes we did have something a couple of years back on this with 270 heads, but I think that it was a valve seat problem where the head splits. I can check later in the day.

This is nothing to do with a rad problem

I will post back later and find it

 

[BABASON]

thanks look forward to hearing from you

 

[television]

The information changes over the year, the only thing listed now is where the exhaust valve sets break down, and this leaves a fault code, there is nothing about oil in the water, so this may just be a head gasket failure, and a head off job and have the head pressure tested

If the car has an oil cooler in the rad it could be that

 

[Rob 210]

I've just, hopefully, recovered from the very same thing on my 210 320cdi except no oil lost anywhere;no overheating;no loss of performance;no water in oil: only lots of oil/gloop in the header tank.

Drove the main dealer at Brentford mad. Head off crack tested pressure tested skimmed head

Finally traced to a flaw in timing chain cover. Fingers crossed that's it

 

[television]

Its a hard one to know, the water has no connection with anything on the timing cover or components

 

[meanie]

Doesn't the water pump bolt on to the front of the timing chest?If so it would rely on an o'ring or face seal to get the coolant into the cylinder block,so a perfectly feasable solution.

 

[television]

Doesn't the water pump bolt on to the front of the timing chest?If so it would rely on an o'ring or face seal to get the coolant into the cylinder block,so a perfectly feasable solution.

http://www.detali.ru/cat/oem_mb2.as...605716.628&CT=M&cat=63A&SID=01&SGR=030&SGN=04

http://www.detali.ru/cat/oem_mb2.as...605716.628&CT=M&cat=63A&SID=20&SGR=015&SGN=01



Good thinking meany,, my head was stuck on the ½ case versions under the head

 

[pomm001]

Vehicle has oil in header tank – a lot and signs of oil around rocker cover on the right at the back of engine where the crankcase ventilation pipe comes out of the rocker cover and goes into the air intake hose after the air mass sensor engine oil cooler has been replaced and cooling system flushed.

Vehicle was driven for 2 weeks did not miss a beat, but oil is back in header tank and signs of oil loss around breather hose again.

I drained engine oil, no signs of water in engine oil

No signs of overheating or blown head-gasket.

I vaguely remember something about 271 engine heads being porous is this an indication of this or am I going in the wrong direction. Is there a MB document concerning this ?

The oil in the header tank looks like engine oil rather than gearbox oil I have tried to look for a valeo sticker cant find one on the radiator. Does any one have a document for determining if this vehicle falls into one that might have a radiator issue. Does this sound like one.

Or a document concerning porous heads, any Ideas any further checks I could carry out.

I am scratching my head on this one and would really appreciate some thoughts or direction

Logic would suggest that the leak is from the high pressure oil feed into the coolant as the pressure is far lower., the most common route is via the head gasket, starting from cold when the oil pressure 'spike' is at it greatest and normally then stops as the engine warms, pressure goes down, all the metals expands etc.
Check with the other folks for common problems but be prepared to remove the head to take a look. Remember that when you have found the cause its good practice to replace all of the 'rubber' hoses as they will be contaminated with the oil, oil makes the EPDM material swell inside and go 'gooey' and could fail.

 

[c200 sport]

could be exhaust gases be pushed into cooling system due to head gasket needing replaced had same problems with wifes 328 bmw now running fine