Need help Can a stator afect your spark 97- 787

[crundell73]

My jet boat isn't running right I have checked the tdc, rotory valve cdis everything checks out but think my stator may be bad , not running over 3,300 rpms idles ok , have not checked the carbs yet Thanks ..

 

[ialonso]

Carbs easier to check that Stator! Check the carbs! Fuel restriction causes what you have.

 

[howie099]

If you have a neutral safety switch try to bypass it.It will stop you around the 3000RPM range if its bad.

 

[racerxxx]

As howie said. The easy test is to put the control handle in f or r. Then try to start it, if it starts in either the neutral start switch is bad.

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[crundell73]

I think that is unhooked ,

 

[racerxxx]

OK, but will it start in F or R? I can't remember if the switch is normally open or closed. But, say it is normally open in neutral position, the boat will start and should hit the low RPM rev limiter when revved up. Now if you put it in forward or reverse and rev it up and your switch is disconnected the MPEM still thinks your in neutral since the MPEM is looking for the signal saying you switched into F or R.

Or, if it's normally closed in neutral the boat won't start and you would get the 4 beeps warning you the control handle is not in neutral. One way or the other something has to be there for it to start OR get out of the low rpm rev limiter. You can't just take it out of the system. I mean you can but you would need to wire a switch in it's place.

So try and start in in F or R.

 

[crundell73]

I think it is unhooked it is a red and white wire , I think I have found the gas has went bad my other engine started and ran for a minute and died, plugs were wet got new gas and put it in spark plug holes and it started right up ! It went bad as I was working on it I guess , 3 + year old gas is going to go bad I had stable in it .
Also found metal shavings in the other engine that ran good but had 6 degree advanced timing so I think that will correct that and save me trouble down the road !

 

[crundell73]

Update ! I Put my engine I was having problems with blowing mpems and 5amp fuses back in and it runs and sounds Great ! What I found is on this motor metal shavings were shorting out my mpems by the time I figured that out and put the motor back in my gas went bad enough it would not rev over 3,300 rpms .

Engine #2 had shavings too and was giving me a advanced timing but still run good but making my engine hot ! It also stoped running on the bad gas after I tried to run it on a later date !
Now I need to do some more testing to see if everything holds up and stays running , cross my fingers ..

( Metal shavings from the starter were on the trigger and stator and timing cap)