DIY Valve stem seals replacement on a BMW N42/N46 engine.
Engine suddenly started consuming a lot of oil (6 dcl/1000 km). I had some substantial oil leaks, so I first had to replace:
– oil pan gasket,
– valve cover gasket,
– Valvetronic motor gasket
– Valvetronic sensor connector flange,
– vaccum pump o-rings,
– VANOS solenoid o-rings.
I also replaced the CCV system, but nothing fixed the oil consumption problem. Replacing the valve stem seals was the next step…
Timing toolkit: https://goo.gl/49sjqB
Flexible air valve holder: https://goo.gl/nmLnP5
Valve stem seal remover/installer pliers: https://goo.gl/NGq5Dw
Complete valve spring compressor toolkit: https://goo.gl/D7C7je
Service manuals: https://goo.gl/OJp4la