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The OM602 oil filter housing has a leak.


Rudy7831

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Hi All! My W124 has an OM602 engine, and it's giving me some trouble. From zero, oil pressure takes around 8 seconds to reach operating temperature. As long as the oil pressure is maintained, the engine may be operated normally. I have hypothesized that the issue is a faulty non return valve in the filter housing. I got fortunate and found a new old stock valve; these are no longer sold by the dealer and I had to replace it along with the spring. The issue has not been resolved, unfortunately. We see no progress. I have no idea where to start looking. There is apparently another valve in the block that maintains lubricating system pressure. Can someone provide a hand with this? Definitely appreciate it. Embedded video demonstrating the issue is below.

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Only the cylinder head is different that I'm aware of.In order to access it, however, the cylinder head must be removed. This is a gas-powered motor. In order to facilitate everyone's search, you should have specified diesel. Check this guidebook for answers. Index of the Model 124 Maintenance Guide I knew a man who changed his oil and filter and ran into the same issue...Mann or Mercedes filters only.

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The problem may lie in the oil pressure sensor. Assuming, of course, that the problem isn't any unpleasant engine sounds but rather the oil pressure guages' slowness to move off 0 bar on start up. My OM602 engined w201 190d, with over 300,000 miles on the odometer, immediately pins at 3 bar upon start up, and the gauge only records a correct pressure reading after it has reached working temperature. MANN oil filters are the only ones I'll use.

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Oil filters on older Mercedes diesels, such as the OM602, are just an insert rather than a metal cannister, making filters from various manufacturers physically interchangeable. I wouldn't dare use a budget filter (Framm/ Crossland?) in there to save ten pounds.

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