I've been scouring this page and there is so much information here, and I'm grateful for it. That being said I recently had a compression test done on 97 330DA w/454's w/approx. 700hrs I am looking to purchase. The compression numbers are as follows:
P - 160, 160, 150, 160, 130, 155, 155, 160
S - 155, 150, 145, 135, 150, 150, 150, 150
The compression test was done cold, and the mechanic recommended a leak down test on #3 on the port side, but he didn't say anything more than that on the report and I have't been able to speak with him.
Does anyone have any insight into why a leak down test would be needed on that cylinder only? Additionally, does the variance in the numbers across all cylinders concern anyone?
Thanks