1987 Yamaha pro-v 150 v6 COMP TEST

[mcgill]

Hello



I have a 1987 Yamaha pro-v 150 v6 what is a good COMP TEST On this MOTOR. The Numbers I was getting is between 90 and 98 on all cylinders. Is this a good reading Or is it on the bad side.

 

[JB]

Re: 1987 Yamaha pro-v 150 v6 COMP TEST

Don't worry about psi. There are so many variables that two different people can get numbers varying by as much as 50psi.

The odds are astronomical against all 6 cylinders going bad the same amount at the same time. They all read within 10% of each other.

That means your engine is in great shape.