Engine looses much oil on the left/top side

rswtal · 07-28-2012, 06:45 PM

I have a problem with a 2003 SL55. There is alot of
fresh engine oil at the top/left engine side.
Even when cruising with 50mls it loose oil.

Any suggestions ???

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JuanMR · 07-28-2012, 07:22 PM

Valve cover gasket?

rswtal · 07-28-2012, 07:41 PM

Dont look like its coming out there. There is alot of oil , must be something bigger i think. I need to fillup 2L after 100mls cruising

rswtal · 07-29-2012, 12:33 PM

Removed SC and i see where the oil went.

JuanMR · 07-29-2012, 01:13 PM

Oh damn! Where is it coming out from though?

JuanMR · 07-29-2012, 02:22 PM

Now that you removed your s/c, take a look at the wiring harness for the throttle body and the recirculating air flap. I found mine to be cut due to excessive heat behind the engine.

rswtal · 07-29-2012, 03:30 PM

Dont know. I think the valve cover gasket is the problem.
I will change all gaskets and check again.

I have no faults. Should it throw error when there is a cut ???

JuanMR · 07-29-2012, 04:03 PM

Well, it did not throw any on my car. My s/c wasnt engaging, star gave me code "M16/7" recirculating air flap fault. So before I bought the part, I checked wiring from the comp to the plug, and found the brocken wires.

The wiring harness for the throttle body and the recirc air flap are routed behind the engine, tie rapped against the engine and transmission. It gets super hot back there, so over time it will burn through the shielding and eventually to the wires. My car is an 03 with 110k miles, so maybe Mercedes noticed and rerouted them on other years. But wouldnt hurt to check. Will save you headaches if you catch it before it happens.

rswtal · 07-29-2012, 04:11 PM

ok, will check that also. But first i need to find the oil leak.

JuanMR · 07-29-2012, 04:13 PM

Yes, thats priority. Thats a lot of oil for it being from the valve cover gasket.

rswtal · 08-23-2012, 05:06 PM

I changed the valve cover gasket and other gaskets. Now there is no oil but this hole (yellow marked) makes me nervous. Its open but there is no oil coming out when engine is running ???

JuanMR · 09-12-2012, 10:27 AM

I see. Does it end somewhere or does it go somewhere?

JuanMR · 09-12-2012, 10:28 AM

Can you take a pic of top view?

merc79 · 05-16-2013, 11:06 PM

Quote:

Originally Posted by JuanMR

Well, it did not throw any on my car. My s/c wasnt engaging, star gave me code "M16/7" recirculating air flap fault. So before I bought the part, I checked wiring from the comp to the plug, and found the brocken wires.

The wiring harness for the throttle body and the recirc air flap are routed behind the engine, tie rapped against the engine and transmission. It gets super hot back there, so over time it will burn through the shielding and eventually to the wires. My car is an 03 with 110k miles, so maybe Mercedes noticed and rerouted them on other years. But wouldnt hurt to check. Will save you headaches if you catch it before it happens.

My 03 s55 is throwing out code m16/7, I'm going to have to remove the S/C and check out the harness like you mentioned to see if its cut. HOw did you fix your problem and prevent it from happening again? I know its a very old thread, but any info would be grateful.
Cheers!

07-29-2012, 12:33 PM	#4
rswtal Newbie Garage is empty, add now Join Date: Nov 2011 Posts: 14 Drives: SL55	Removed SC and i see where the oil went. Attached Thumbnails

08-23-2012, 05:06 PM	#11
rswtal Newbie Garage is empty, add now Join Date: Nov 2011 Posts: 14 Drives: SL55	I changed the valve cover gasket and other gaskets. Now there is no oil but this hole (yellow marked) makes me nervous. Its open but there is no oil coming out when engine is running ??? Attached Thumbnails

09-12-2012, 10:27 AM	#12
JuanMR Member Garage is empty, add now Join Date: Apr 2012 Location: Wichita, Ks Posts: 75 Drives: 2003 E55 AMG	I see. Does it end somewhere or does it go somewhere? __________________

09-12-2012, 10:28 AM	#13
JuanMR Member Garage is empty, add now Join Date: Apr 2012 Location: Wichita, Ks Posts: 75 Drives: 2003 E55 AMG	Can you take a pic of top view? __________________

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07-28-2012, 07:22 PM	#2
JuanMR Member Garage is empty, add now Join Date: Apr 2012 Location: Wichita, Ks Posts: 75 Drives: 2003 E55 AMG	Valve cover gasket?

07-28-2012, 07:41 PM	#3
rswtal Newbie Garage is empty, add now Join Date: Nov 2011 Posts: 14 Drives: SL55	Dont look like its coming out there. There is alot of oil , must be something bigger i think. I need to fillup 2L after 100mls cruising

07-29-2012, 01:13 PM	#5
JuanMR Member Garage is empty, add now Join Date: Apr 2012 Location: Wichita, Ks Posts: 75 Drives: 2003 E55 AMG	Oh damn! Where is it coming out from though?

07-29-2012, 02:22 PM	#6
JuanMR Member Garage is empty, add now Join Date: Apr 2012 Location: Wichita, Ks Posts: 75 Drives: 2003 E55 AMG	Now that you removed your s/c, take a look at the wiring harness for the throttle body and the recirculating air flap. I found mine to be cut due to excessive heat behind the engine.

07-29-2012, 03:30 PM	#7
rswtal Newbie Garage is empty, add now Join Date: Nov 2011 Posts: 14 Drives: SL55	Dont know. I think the valve cover gasket is the problem. I will change all gaskets and check again. I have no faults. Should it throw error when there is a cut ???

07-29-2012, 04:03 PM	#8
JuanMR Member Garage is empty, add now Join Date: Apr 2012 Location: Wichita, Ks Posts: 75 Drives: 2003 E55 AMG	Well, it did not throw any on my car. My s/c wasnt engaging, star gave me code "M16/7" recirculating air flap fault. So before I bought the part, I checked wiring from the comp to the plug, and found the brocken wires. The wiring harness for the throttle body and the recirc air flap are routed behind the engine, tie rapped against the engine and transmission. It gets super hot back there, so over time it will burn through the shielding and eventually to the wires. My car is an 03 with 110k miles, so maybe Mercedes noticed and rerouted them on other years. But wouldnt hurt to check. Will save you headaches if you catch it before it happens.

07-29-2012, 04:11 PM	#9
rswtal Newbie Garage is empty, add now Join Date: Nov 2011 Posts: 14 Drives: SL55	ok, will check that also. But first i need to find the oil leak.

07-29-2012, 04:13 PM	#10
JuanMR Member Garage is empty, add now Join Date: Apr 2012 Location: Wichita, Ks Posts: 75 Drives: 2003 E55 AMG	Yes, thats priority. Thats a lot of oil for it being from the valve cover gasket.

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05-16-2013, 11:06 PM