Hopefully some one can help me on this.

I had a problem on my CLK 230K, the engine light came on so I took it to the dealer in Reading, they said it was the oil separator that had cracked and leaked oil down the piping leading to the intercooler and out of it, then pass some valves, and in to some other parts that they showed me.

They quoted 900+VAT for labour and £175 + VAT for parts, totalling something like £1400 inc VAT, I told them I'd do the work my self and clean the mass air flow sensor rather than replace it as they were asking £200 or so.

I did all the work a few days ago and all went well so I took it back to get the engine light turned off, but I still get lumpy running at idle weather the car is hot or cold, I thought all this work would have fixed that as well but it didn't.

Can any one suggest what it may be thats causing me a problem, injectors? mass air flow sensor still faulty? reset ECU?

Thanks for your time.

Stewart

All the the 1997-2001 Kompressor engines have a PCV valve & that causes the oil in the inter cooler & air mass sensor..cleaning does no good unless you replace that valve & 1 of the hoses going to the OIL separator..

You need MB part number 111-018-16-82 & 111-010-00-91

Then try cleaning again...if the engine is still balky then the air mass sensor is dead..

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Thanks a lot for your advice this is the list of parts I was told to replace...

MA111 997 01 86 Seal
MA111 051 01 77 Magnet
MA271 150 27 33 Starter line
MA002 140 55 60 Valve
MA002 140 68 60 Valve
MA002 540 14 97 Valve
MA015 997 23 48 Seal Ring
MA111 094 02 83 Muffler

I changed all of this apart from MA002 140 68 60 as the valve before this appeared to have no oil in it, so I assumed this would be ok.

The muffler that they said was at fault for leaking the oil appeared to have no faults with it when I took it off apart from excess oil, they said something about a crack or split, I saw nothing of the sort unless it was internal?

It also feels like a lumpy running I had on my Mitsi FTO once, which turned out to be the timing belt had slipped a notch, but I assume this would have turned up on thier diagnostics test, injectors were mentioned to me aswell by some one, but again I assume this would appear on their test results...

I'm doubting their competence at the moment, I'll go and order those bits and replace them today, whats your take on their parts and advice?

Cheers

Stewart

I picked up those parts, not sure if I have installed them correctly, I'll show you the pics incase, car not going to be used until confirmed correct, the hose I couldn't fit due to it being too long...

I installed the valve rather than replace an old one, again not sure if this is correct...

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