Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: merutka on August 20, 2013, 20:59:49

Title: fuel injector pump oil overflow early 250sl red cap
Post by: merutka on August 20, 2013, 20:59:49

oil was leaking out my red cap. 1 liter per 200 miles.  turned out to be 6 seals under the plungers.  a pain to replace. access from top and side cover.

Title: Re: fuel injector pump oil overflow early 250sl red cap
Post by: garymand on August 21, 2013, 20:43:11

So gas was leaking past the seals.  Then the oil was drained and refreshed?

Title: Re: fuel injector pump oil overflow early 250sl red cap
Post by: merutka on August 22, 2013, 19:41:31

no gas was leaking. it is stopped by the oil film seal between the plunger and piston case.  The seals stop high pressure oil from pushing into the lower part of the pump.

Title: Re: fuel injector pump oil overflow early 250sl red cap
Post by: garymand on August 23, 2013, 20:39:48

Thanks, that helps.