Valve cover gasket leak? w203 Pics *
Super Moderator
Joined: Mar 2007
Posts: 5,295
Likes: 22
From: VA
THE C350
Mine also appear to have a light leak since I also have a slight build up of gunk around there. BTW those wires by the alternator should have a plastic shield around them to protect them I don't know what they do but recommend getting some protection for them.
Could you get us a picture of under the air cleaner on both sides.
Could you get us a picture of under the air cleaner on both sides.
Super Moderator
Joined: Mar 2007
Posts: 5,295
Likes: 22
From: VA
THE C350
On my car the plastic got old and brittle and just started to come off on its own. You just need some heat resistant plastic/rubber cover to keep it from chafing.
Junior Member
Joined: Jul 2012
Posts: 35
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C320
I just did this as well as the spark plugs on Saturday. Took me a while as I was taking my time and thoroughly cleaning everything. I went ahead and did the Oil Reservoir as well where you will need a GASKET MAKER SEALENT!
Please advise that you also purchase the 3 PVC (purge Valve control) tubes as mine all tore apart when you have to remove them to get the valve covers off.
Spark plugs were easy! I used the 17 mm. spanning wrench and got the wires off JUST PRIOR TO PULLING THE VALVE COVERS OFF!
New Bosch 4 spark spark plugs ROCK!
Please advise that you also purchase the 3 PVC (purge Valve control) tubes as mine all tore apart when you have to remove them to get the valve covers off.
Spark plugs were easy! I used the 17 mm. spanning wrench and got the wires off JUST PRIOR TO PULLING THE VALVE COVERS OFF!
New Bosch 4 spark spark plugs ROCK!
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MBWorld Fanatic!
Joined: Jan 2005
Posts: 2,848
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From: Orange County
2005 C Wagon (No snickering please!)
Is your crankshaft position sensor defective? I can never understand people who change parts that are working. I have to ask, how do you know the new one is good? If the installed part is working, you know it is good. The position sensor is not like a belt that has a finite life, and should be changed based on time or mileage.
Junior Member
Joined: Jul 2012
Posts: 35
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C320
It already faulted once when it was 104 here in Houston and the car hesitated and refused to start. Had to cooax it a bit and it FINNALY DID! Went to Advance Auto and they showed me the crankshaft position sensr code... check engine light cleared, but the code remained...
For 18 bucks, I will fix it.
For 18 bucks, I will fix it.
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Joined: Jun 2008
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
The Wiki has R&R on valve spring replacement & resealing the circulating breather covers which effectively cover this.
You don't need a DIY on the valve covers. Pull off the aircleaner. Everything is exposed. Remove valve covers & clean them up. Fit new gaskets & reinstall.
I recommend you use a thin coating of Yamabond 5 or 6 on those damn gaskets as they frequently weep.
Good luck!
You don't need a DIY on the valve covers. Pull off the aircleaner. Everything is exposed. Remove valve covers & clean them up. Fit new gaskets & reinstall.
I recommend you use a thin coating of Yamabond 5 or 6 on those damn gaskets as they frequently weep.
Good luck!
