240d leaking from filter housing NO OLD O-RING IN THE GROOVE!! - PeachParts Mercedes-Benz Forum

jasonleefreeman · #1 03-10-2006, 10:37 PM

The car is a 1979 240d 123 chassis.

I am having trouble with oil gushing from around the o-ring on the filter housing. It has happened twice when starting the car. There is no second o-ring. The groove is shiny aluminum, the o-ring is seating against the metal on both sides. The housing and the top are coming together metal to metal. Twice now the o-ring has pushed out in one spot. It seams that the top of the housing is flexing enough for the o-ring to get out. Why does it seem there is so much pressure in the filter housing.

Thanks,

Jason

Palangi · #2 03-10-2006, 10:59 PM

Could it be an incorrect filter? Maybe too tall?

Maybe a piece of an old filter like an old rubber grommet plugging the filter drain?

Defective O rings from some 3rd world country?

jasonleefreeman · #3 03-10-2006, 11:21 PM

thanks for the tips. I am pretty sure the filter is correct, as I mentioned, the housing and cap are coming together metal to metal. I will check for junk in the drain. What is puzzling is that it happened once, I changed the filter and o-ring, the car I thought was fixed until a couple days ago it happened again. I had gone several days after I fixed it before it happened the second time.

Thanks,

Jason

Palangi · #4 03-10-2006, 11:24 PM

What brand and number of filter are you using?

t walgamuth · #5 03-11-2006, 08:02 AM

filter is correct and the o ring is there, then your filter houseing must be damaged. the top or body bent or otherwise distorted. look carefully and if so find another filter housing...at least the lid.

tom w