Bmw N55 Oil Leak Fix? Tech

N55 leaking oil> technical forums > mechanical maintenance and tsbs

And then lastly, when replacing my spark plugs last month i noticed a little oil residue down in the spark plug chambers, and a bit of oil leaking out of the bottom piece of the intake/inlet pipes I'd like to fix this oil leak coming from the intake pipe, as i presume all these symptoms may be connected by whatever is causing that leak. Bmw 1 series coupe forum / 1 series convertible forum (1m / tii / 135i / 128i / coupe / cabrio / hatchback) (bmw e82 e88 128i 130i 135i) > technical / specific topics > 135i turbo engine (n54 / n55), exhaust and drivetrain modifications n55 oil everywhere Help identify possible locations of a leak. « previous thread next thread » n55 oil leak help Hi willmagrath, n55's are commonly known for valve cover gaskets to leak, sometimes they also warp or crack after time when they become more brittle

Most common place is at the back close to the firewall and you tend to see it seeping onto exhaust heatshield and exhaust Another area will be the oil sump seal This seems to show up more on vehicles with higher mileage past 60k The 5 most common bmw n55 engine problems Valve cover gasket leak, water pump failure, oil filter housing gasket, high pressure fuel pump. Don’t let the n54 and n55 engine oil filter housing gasket leak become a seriousproblem for you

The n54 and n55 engines are popular power plants that are widelyfeatured in a variety of bmw models from 2006 through 2019, including the 135i, 235i, 335i,535i and xdrive variants

These engines are known for their performance, however […]