1992 Mercedes Benz 190e leak

STEVEWELSH

MEMBER
1992 MERCEDES BENZ 190E
4 CYL
2WD
AUTOMATIC
103,000 MILES

The car has a water pump that is about 9000 miles old.Seems to run fine. No oil in the antifreeze and visa vera. Runs 40-80 degrees generally. Oil pressure light not on but gauge usually at 2.5. seems like valve cover gasket but why antifreeze? Help....This car has been in storage for couple years. The system was pressure tested by a mechanic who said there was no leak (which has become more pronounced since then).

5 Replies

KHLOW2008

MECHANIC
41,815 POSTS

Hi stevewelsh,

Thank you for the donation.

Wash away the antifreeze and dry out the area. Start engine and note where the anti freeze is coming from. There are a few coolant hoses and pipes around the area and could be from them. When engine heats up, pressure would build up and sometime hoses have pinholes that would not leak under normal circumstances but would do so after it heats up.

Though a pressure test have been done, it could sometimes not be comprehensive as the time taken could be too short.

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Tuesday, October 26th, 2010 AT 9:44 AM

STEVEWELSH

MEMBER
4 POSTS

Nope the leak is very apparent to around the bottom of that black circle there in the photo. The mechanic suggested that a hose might have a micro leak that squirted.Am I correct that behind there is the timing chain (in an empty -not oil or antifreeze soaked - area then the after that valves and stuff soaked in oil?. i am going to run and set looking at it for some time to try and figure it out.

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Tuesday, October 26th, 2010 AT 11:48 AM

KHLOW2008

MECHANIC
41,815 POSTS

I concur with the mechanic's view about a micro leak squirting onto the area. Behind the half moon seal are oil based components such as timing chains and sprockets and no chance of coolant coming from there. If coolant is coming from behind the seal, then the engine oil would be contaminated and become milky.

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Tuesday, October 26th, 2010 AT 11:55 AM

STEVEWELSH

MEMBER
4 POSTS

I just want to thank you for your help. The search is on. It seems like a simple machine and I should have the repair manual soon that will help as I try to fall out of love with my volvo and into with mercedes

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Tuesday, October 26th, 2010 AT 12:11 PM

KHLOW2008