I have a 1990 Merc 200 that is running compression between 89 and 92 on all cylinders. Is this too low or about right? The motor hasn't been ran for a couple of years. Any info appreciated.
Hi I have a 1988 merc 200 and rebuilt power head and compression is 124-125 across all six cylinders after about 20 hrs , how many hours about on your motor?? hope for you it is carbon buildup..............
