Quote:
Originally Posted by Tonyfeb14
My 2003 X5 4.4 152k mi looks like it needs valve stem seals. Rough idle, misses on cold start, and occasional puffs white smoke on start when cold. Much better in warm weather. From another post where I asked around, likely valve stem seals which seem to be a common problem on the N62.
I have seen a few tools on ebay to do the job with the engine in place. The left bank #2 is pretty close to the firewall on the X5 so not much room which has me concerned about doing this without pulling the engine (which I am not going to do  ).
Anyone have any experience using either the AGA N62 Seal Master's Tool Kit or these other tools advertised on ebay? One is available for about $380. The other kit from AGA is about $1000 or can be rented for two week period.
Neither requires the camshafts to be removed, but there doesn't seem to be much room to work near the firewall.
Thought to see what the experiences are before plunging in on this. |
Don't start the procedure unless you first buy some extra valve keepers ! if one goes flying and you can't find it again, big big trouble for you !
It's a MUST to rent the best tools you can that can help compress the valve springs. When performing this procedure on a 4.7L Chrysler Magnum V8 16 valve engine, it was amazing to perform with the OEM tools manufactured by kent-moore. I had to use a 20 inch 3/8 ratchet and attached to the end of a handle was a ratchet strap to keep force to compress the valve springs while I could work inside. Some thick bearing grease and a small extension wand magnet can help to install and remove the keepers. I would typically install the new stem seal, install the spring, install the top washer, pack the valve stem with grease so to aid the keepers to stay in place.
Another thing is you need to have shop air regulated at about 20-30 PSI with a threaded adaptor into the spark plug bore.This will keep the valve from falling down while performing the service.
Working at the back of the engine is tough... I used a sturdy construction step and one of those durable and soft 'kitchen prep mats' for people to stand on... place it over the radiator support and that gives you a nice cushion to lean all the way so to access the back of the engine !