Yamaha 94 c75 compression?

[Gyro]

1994 c75 has 90 lbs compression on all 3 cylinders. Is this too low? Cant get motor to rev over 3k under load. Wondering if im wasting my time with this motor???

 

[racerone]

Sounds like it is not running on all cylinders.------Check for STRONG spark on all leads.

 

[Gyro]

Thanks for reply. Yes i checkd for big spark. I think we hav figured it out. The plastic pick up tube in tank had a crack in it up near the top. Its running a whole lot better but it still not exactly right. It wants to bog a couple times when giving WOT. It will finally take off after few times of working lever back an forth. When loading on trlr i could not get it to open up enough to load it. So we took it home and my buddy went thru all carbs an said they lookd like they were new. We checkd timing idling on muffs and WOT out on lake and timing is good. He did find it has bad rectifier. Could this make motor run bad? Thanks again