99’ speedster back from the dead?!

[19speedster99]

So I was on the lake 3 weeks ago when one engine sucked up a few rocks. Ran for about 20 mins and the right engine died out on the lake. Limped the boat back to the ramp on the one perfectly running engine.
The left engine started every time out of the water, the right engine would attempt to start but wouldn’t start. Lost all power probably due to the battery being dead from trying so much- also blew one of the aluminum bung welds, spraying on some electrical connections.
Anyways got it back home, jb welded the leak in the exhaust, the good engine started after a charge and the bad wouldn’t even click. The good one Started up intermittently every few hours until everything died and wouldn’t acknowledge the key.got the computer plugged into by a seadoo tech and said the mpem was dead so I got a used one and plugged it in. Wouldn’t fire either.
Waited a week to today, when both engines fired right up! Not even a hiccup. All cylinders read 120 psi (twin rotax 787), has anyone encountered this before? I tracked down a new mpem, 2 used good stators spent well over 1k on everything. I am stumped. I’m very tempted for a quick cheap sale to get rid of the gremlins, what are your guys’ thoughts??

 

[racerxxx]

Put your bad MPEM back in. See if it works. How old is the battery and did you have it load tested? I have a load tester that will also check for a dead cell in a battery. Battery in my Yukon would start it to many short trips and it wouldn't start. Let it sit a week, boom fired right up. Load tested and came back with a bad cell. Got a new battery no more issues, started every time. It was the weirdest shit.

 

[19speedster99]

the bad mpem was the only one that started it. I got it tested at Canadian tire, they said it is in perfect condition, no bad cells, almost scared to put it back into the water lol

 

[whitewheels]

So I was on the lake 3 weeks ago when one engine sucked up a few rocks. Ran for about 20 mins and the right engine died out on the lake. Limped the boat back to the ramp on the one perfectly running engine.
The left engine started every time out of the water, the right engine would attempt to start but wouldn’t start. Lost all power probably due to the battery being dead from trying so much- also blew one of the aluminum bung welds, spraying on some electrical connections.
Anyways got it back home, jb welded the leak in the exhaust, the good engine started after a charge and the bad wouldn’t even click. The good one Started up intermittently every few hours until everything died and wouldn’t acknowledge the key.got the computer plugged into by a seadoo tech and said the mpem was dead so I got a used one and plugged it in. Wouldn’t fire either.
Waited a week to today, when both engines fired right up! Not even a hiccup. All cylinders read 120 psi (twin rotax 787), has anyone encountered this before? I tracked down a new mpem, 2 used good stators spent well over 1k on everything. I am stumped. I’m very tempted for a quick cheap sale to get rid of the gremlins, what are your guys’ thoughts??

Gremlin,I'm gone name my boat gremlin after all the weird shit it thrown at me [emoji28]

Anyway. Donno how these twin engine ones are wired,but bad battery conectors can really mess thing up,donno how reliable the battery switch is ....[emoji848]