Hi Phil, this van should have more like 130-140!!! This is not very
difficult;
The only other possibility is a carbon built up but normally if there is an
increase amount of carbon is in the combustion chamber it is accompanied by
the same problem on the exhaust valve seat, in other words; that mean that
the valve are not closing perfectly so compression is low or normal.
I don't see any easy solution as to lower the compression, how are the
Spark plug, Oily? Wet? Carbon on it? That can tell you a lot, if all 4
plugs are the same you have a strange problem. Let me know about the
pressure test result.
Regards, Ben
Sorry for my poor english