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W163 2005 ML350, S124 1994 E220
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71 Posts
Discussion Starter #1
So i was looking at the oil leaks on the engine since i have to refill every so often. And when i saw this i thought this maybe is the reason why my exhaust spits out some fluid. is this bad. The engine is running fine but i have noticed that there is 2 sparkplugs per cylinder. Why is this?

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Purple Moderator
99 ML430, 00 ML320, 05 E500 4matic Wagon
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22,126 Posts
The M112 and M113 engines all had twin spark plugs for a cleaner burn and to improve economy.
Coils in that shape should be replaced. I did all 8 on are ML430. I was lucky. Found a set from
North Texas ML for $100 bucks on eBay.

In almost all cases water from the exhaust is a by product of the catalytic conversion process.
 

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W163 2005 ML350, S124 1994 E220
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71 Posts
Discussion Starter #3
Okay. About the oil problem it seems to not take it in the cylinders since there is not "blue" smoke or smoke at all. But where is the usual oil leaks since i feel like it leaking on both valve cover but also somewhere at the back on the engine?
 

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1999 E430; 2005 ML500
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1,686 Posts
There is a smaller cover on top of each valve cover, sealed with RTV sealer. They also have small ports in them for crankcase ventilation. If they are leaking, you can remove and reseal them, also clearing the ports in the process.
 

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W163 2005 ML350, S124 1994 E220
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71 Posts
Discussion Starter #5
Okay. Think im going to order a few seals and just change the most. And also go to a junkyard and take buy a few ignition coils from a m113 since they had 2 of them there. if they are the same?
 

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2003 ml500, 2004 ml350
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1,532 Posts
Okay. Think im going to order a few seals and just change the most. And also go to a junkyard and take buy a few ignition coils from a m113 since they had 2 of them there. if they are the same?
Here is a link to the coil firment .

I know in some countries it seems dealers can not sell parts online in the US they can. There was also a part number change so the 2 coils may have a different number.

 
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