How to use the AGA valve stem seal to replace your stem seals on a smoky bmw N62 V8 engine.
Nearside (UK) Cylinders 5-
Start by removing the cover for the engine ECU Box and disconnecting the entire engine loom.
Remove all the sensors and coil packs as per the other side
Unbolt and move oil tank to one side.
Remove the 13 bolts and remove cover.
Lever the cover up from the front but keep an eye on the eccentric sensor at the other end of the cover the connector is fragile and brittle.
As soon as you can fit your hand inside remove the spark plug tubes as it makes it easer to remove the cover
Update: I’ve sold the tool. The person who bought it from me lists doing the work for £1100 which seems fair to me.
Their ebay username is HEMI_SUSA
And their website is:
Another company offering the service for £1200 who sometimes lists on ebay is:
Fixed automotive services, James Connor, 19 Hampson Crescent, Handforth, Cheshire, Sk93hf, United Kingdom
Or you can rent the tool from this chap:
phil_clements at hotmail.com
Please note -
Whilst the rocker covers are off, you should change the upper timing cover gaskets,
On my car the nearside (cyl5-
I chose to abandon the replacement of that gasket, but I did change the o-
I replaced the spark plug tubes, even though the old ones weren’t leaking. I noticed they have been revised with heat shields over the originals.
After being off the road for a month the car is now back together and no longer smoking.
My advice is to start with the nearside (cyls 5-
The total time to complete this work was about 4-