Hi guys, I'm still in the process of changing out the motor in my X5. I finally got all the new parts and was going to start changing them over on Sunday. I decided to run a leak down test on the replacement motor and got some high numbers. Since I'm no expert on this; I'm hoping someone here can tell me what is acceptable for leak down. I ran the check in firing order; and triple checked the ones with bad readings. With the gauge I used; the higher the number the worse the leak down. The air is coming out the exhaust ports. so the problem is valves not fully seating. I can wiggle rockers when at TDC so they aren't holding valves open.
Cylinder 1) 50-55
cylinder 5) 5-10
cylinder 4) 35-40
cylinder 8) 10-15
cylinder 6) 5-10
cylinder 3) 5-10
cylinder 7) 65-70
cylinder 2) 50-55
I would hate to go through all the work of putting this motor in and have it run like crap and give me mis fire codes...Barry

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Barry in Wisconsin