Motor stall beyond 3000 rpm-cuts out
 

1989 Mercury Black Max 200 HP
I would take the boat out and I could get on plane with no problems, but after a while, the motor would bog out, and loose power, it would run about 9 mph and turn 2500 rpm. There will be times that after 5-10 minutes later, the motor will kick in and start running great. Then it would loose power again and if I push beyond 3000 rpm, it would stall and just cuts out, however it's fine if I run at lower rpm.
Any suggestions as to the problem?
Thanks! :sad:

intermitent loss of fire on 3 cyl. one of the power packs going bad? is the fuel ball hard when it is bogging?

sounds like a switch box, but could be the high speed windings in the stator, you;ll need to check it with a DVA meter and this http://issuu.com/cdielectronics/docs...owFlipBtn=true

I just ordered a DVA adpter (ESP640) this morning thinking I was going to need it. I'll check the switch boxes today.
Thanks guys! :beer:

This sounds like the stator to me, but could be a switch box.

builder, do you have a volt gauge on your dash or electronics? is it reading above 13 vlts when running?

Yes its closer to 13.6vdc and its coming from my furuno fish finder. On the voltmeter it's harder to tell, but its over the 12 volts

ok. some times when you have stator issues, the charging system or the tach will act up.

If it were me I';d be looking to change the stator

phatdaddy, now that you mention the tachometer, I have been getting readings high in the 7k rpms at full throttle and was concerned. But then I connected an external tachometer and the readings were within normal parameters. Just thought I had a bad tachometer. Your think it may be tied to the stator?