2004 mercury 200 hp optimax

[vance24]

hello i am looking at buying a ranger 195vs with a 2004 mercury 200hp optimax on it and it has 317 hours and the compression rangers from 91-99 i was wondering if this is good or bad? I have tried researching this topic for hours and cant find a secure answer for this exact motor. If someone could help that would be awesome.

 

[QBhoy]

Try another gauge.

 

[vance24]

what does that mean

 

[jbcurt00]

what does that mean

Quite literally he means see if a different compression gauge gives similar varying psi

 

[vance24]

i just want to know what the ideal compression for my motor is

 

[QBhoy]

what does that mean

Yeah. Just having used loads of gauges over the years. Unless it’s an expensive and regularly calibrated gauge. They can read as high or as low as 10-30 psi out from what I’ve seen. I’d almost be sure that If all 6 are showing similar readings...there is little chance that they are all low...unless the engine has thousands of hours on it and been commercially hard ran.

 

[QBhoy]

i just want to know what the ideal compression for my motor is

As far as I know...110-130 would be acceptable to brilliant on the V6 optimax. Try another gauge. All the best.