I'm looking to buy a 2003 Regal 2650 with a volvo 8.1. The manifolds and risers were replaced due to a crack and leak, but the seller says it was external only. The compression report shows all cylinders 180-200, except #5 which shows 140 cold and 190 hot. Also, both engine mounts are corroded, as are other components on bottom of engine.
My questions:
1. Is it OK for #5 to be low cold compression? Or is this a sign that water possibly got inside cylinder? The oil was nice and clean, so likely changed beforehand and no indicator.
2. Is it normal for engine mounts to be corroded this much? On the water today the bilge remained nice and dry. I'm wondering if this corrosion was from the manifolds since it is a saltwater boat now.
Thanks!
My questions:
1. Is it OK for #5 to be low cold compression? Or is this a sign that water possibly got inside cylinder? The oil was nice and clean, so likely changed beforehand and no indicator.
2. Is it normal for engine mounts to be corroded this much? On the water today the bilge remained nice and dry. I'm wondering if this corrosion was from the manifolds since it is a saltwater boat now.
Thanks!