"Hi I have a yamaha V4 115 HP
"Hi I have a yamaha V4 115 HP that has 4 cyclenders, 3 of which appear to be tight with @140lbs of pressure in them and one that won't get past 30lbs. the head was removed and we found pitting on the head and piston and we where told that it sounded like it was grinding a bucket of bolts by the previeous owner.
Piston and head damage"">
head damage""> these pictures show the damage caused by something bouncing around in the head but we never found any debris and the starter moves all the works just fine.
what else might be the cause of this damage and loss of pressure in the cylender and is it hard to get to the rings for just one piston?
thanks in advance to those who answer.
GC"
"Hi I have a yamaha V4 115 HP that has 4 cyclenders, 3 of which appear to be tight with @140lbs of pressure in them and one that won't get past 30lbs. the head was removed and we found pitting on the head and piston and we where told that it sounded like it was grinding a bucket of bolts by the previeous owner.
what else might be the cause of this damage and loss of pressure in the cylender and is it hard to get to the rings for just one piston?
thanks in advance to those who answer.
GC"