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View Full Version : Rust on Black Max stator pickups


coffeeguy
08-19-2023, 01:50 PM
This motor wont get over 1600 rpm while trying to get on plane. Dva readings and ohm* readings for trigger stator(is a merc one) and harness in spec except high speed had a dva reading of 102v and 104 (so just out of the 20 to 100v spec). I have never seen this kind of rust on a boat stator only old 2 strokes the sat for years. Checking for spark (using a timing gun)all 6 cylinders stay lit. Could this cause the no rev problem
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pcrussell50
08-19-2023, 02:09 PM
This motor wont get over 1600 rpm while trying to get on plane. Dva readings and ohm* readings for trigger stator(is a merc one) and harness in spec except high speed had a dva reading of 102v and 104 (so just out of the 20 to 100v spec). I have never seen this kind of rust on a boat stator only old 2 strokes the sat for years. Checking for spark (using a timing gun)all 6 cylinders stay lit. Could this cause the no rev problem
523413523414523415

Easy stuff first... I would also check link'n'sync and make sure the timing arm is advancing the trigger as it should.

I have had a motor where the trigger was stiff enough that it did not advance without a helper spring. And you were stuck at 1600'ish rpm or whatever small rpm that kept you from getting on plane.

Also, a module (if you still have them) might sense something wrong, and be limiting you.

-Peter
coffeeguy
08-19-2023, 03:13 PM
Link and sync was done, modules were removed. It was getting proper timing when throtle was added (set to 22). I just wonder if the rust build up could cause this?
pcrussell50
08-19-2023, 03:28 PM
Link and sync was done, modules were removed. It was getting proper timing when throtle was added (set to 22). I just wonder if the rust build up could cause this?

Sorry mate, then I'm out of further ideas. You've done everything I would have done. Time for the legends to step in.

Maybe clean off the rust if it can be done safely?

-Peter
coffeeguy
08-19-2023, 04:27 PM
I am working backwards with a known good stator trigger and boxes from a running motor. Prices in Canada don't allow throwing parts at them.