vedder2203
New member
so who can tell me the proper procedure for a leak down test on a 2000 150 xr6? # 2 & #5 cylinders are reading 60 and other all in at 110.. was going to pull the Heads but was told to do the leak down first if possible..
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Did it overheat? If it did you may need to pull the heads as Merc. calls them or cylinder covers and check the gaskets but more important place a straight edge across the head mating surface to check for trueness. If questionable then send them to a machine shop for milling to true the surface.