2001 mercury Optimax 135hp comprssor

[mragu]

On this year Optimax I have read about issues with the compressors. If compressor was replaced with the good ones, what color were they? I remember reading the good part was red or blue? Which is the “right one”. Thanks, mike

[Motv18]

If you have an 2001 with the original. And any hours. It’s one that isn’t going to fail or just short of failing.

Last i I saw was blue. Black is original or block painted color.

A few mechs around here started blaming the main line to compressor check ball. A bad one flows backwards on the piston down stroke starving the bearings of oil.

We also blame the pulse pump hose leaks for bad #6 hole and check offten for leaks.

[mragu]

It has 150 original hours on it, picking up tomorrow. Thank you for the info