E70 Valve stems seals and engine rebuild - done right

[London Lad]

I was about to say the same. it looks like 'make work' to me. We used to hold the valves up with compressed air while changing seals in the 'old days'

[Scott ZHP]

Originally Posted by London Lad

I was about to say the same. it looks like 'make work' to me. We used to hold the valves up with compressed air while changing seals in the 'old days'

I must be really old, I've used oiled up cotton clothesline. With piston at BDC, feed as much oiled cotton clothesline into the cylinder as you can, rotate up toward TDC and compress the line. Service stemseals. Remove rope, do next cyl.

[London Lad]

Originally Posted by Scott ZHP

I must be really old, I've used oiled up cotton clothesline. With piston at BDC, feed as much oiled cotton clothesline into the cylinder as you can, rotate up toward TDC and compress the line. Service stemseals. Remove rope, do next cyl.

Ah now you are bringing back memories! I used to do that before I had a compressor.

I doubt BMW techs would have greasy clothes line in their tool boxes :-)

[jacbmw2002]

Hey guys,

Just thought I would confirm before we launched into fixing Valve Stem Seals via the AGA tool on a N62tu.

My car with 110000kms only blows (large amounts) of thick white/blue smoke on start up. It does this 4/5 times the car is started, and it doesnt matter if it has been sitting for 5 min or overnight.

The plum of smoke is the same as the videos I have watched of other n62tu's with the valve stem problem - but they have the smoke after IDLE. We do not have any problems with smoke after idle.

Any thoughts?

Thanks in advance