Oil Leak

digi · 28-11-2014, 12:34 PM

Hi,

anyone had a rear mount seal leak on their car? I already changed the CPV (constant pressure valve), but after driving a few days I see that there is still some oil leaking and from the inspection, seems like its the RMS.

Car is a garage queen and I barely drive it, so kind of surprised that I would get a RMS leak.

Any input is much appreciate.

uncle benz · 30-11-2014, 01:42 PM

Could well be the rear main, but get a mirror and check the very back corner of the cam cover gasket on the exhaust side. They can leak and run down the back and look very similar to rms or cpv leak. Much easier job too.

digi · 05-12-2014, 05:28 PM

thx bro! Just the RMS doesn't seem to be a common issue for E46 M3, thus my uncertainty. Cars mainly driven in town, thus never really gets going hence my doubt about the RMS.

Will get my garage to check this area first as the CPV has already been changed.

28-11-2014, 12:34 PM	#1
digi S5 - Full Throttle Join Date: Apr 2009 Location: Hong Kong Posts: 486 Casino cash: $4438	Oil Leak Hi, anyone had a rear mount seal leak on their car? I already changed the CPV (constant pressure valve), but after driving a few days I see that there is still some oil leaking and from the inspection, seems like its the RMS. Car is a garage queen and I barely drive it, so kind of surprised that I would get a RMS leak. Any input is much appreciate. __________________ E46 M3 CSL + R35 GTR (bolt on mods 600bhp) + 458 Italia + LP560-4 + Audi S5

05-12-2014, 05:28 PM	#3
digi S5 - Full Throttle Join Date: Apr 2009 Location: Hong Kong Posts: 486 Casino cash: $4438	thx bro! Just the RMS doesn't seem to be a common issue for E46 M3, thus my uncertainty. Cars mainly driven in town, thus never really gets going hence my doubt about the RMS. Will get my garage to check this area first as the CPV has already been changed. __________________ E46 M3 CSL + R35 GTR (bolt on mods 600bhp) + 458 Italia + LP560-4 + Audi S5

30-11-2014, 01:42 PM	#2
uncle benz S4 - Getting the hang of it Join Date: Nov 2009 Location: West Sussex Posts: 155 Casino cash: $5680	Could well be the rear main, but get a mirror and check the very back corner of the cam cover gasket on the exhaust side. They can leak and run down the back and look very similar to rms or cpv leak. Much easier job too.