Super Jet please help with this elec issue before I lose it

[masterblaster]

This is a ski that ran for a few months fine,sits a few weeks,go to start it,this is what I get!

ski has come and go spark on back cylin possibly the front cylinder as well,wont start or even kick or back fire,just nothing,remove the epic try another cdi get spark on front cylinder nothing on back cylin.switch out the tbm fw and try stocker,get same results. switch out stator and ski starts twice VERY easy,run it for a min or so,shut it off go to start third time,get backfire then starts,shut down then try to start again,get a slight backfire,then nothing,now its back to come and go spark and wont start at all? what the hell is going on??????????

 

[steve-uk]

this looks like the exact same problem we had on a buddies ski... pm junkyardj.. he may have the answer for you

we changed everything on the ski and it ended up being something simple... i just cant remember what it was

 

[D-Roc]

bad coil, wires, or faulty kill switch?

 

[augustaf]

If you have another coil, consider trying it. I would also (temporarily) disconnect the black/ white connector from the h/pole switch to rule out any switch b/s, like D-Roc suggested.

 

[masterblaster]

tried disconnecting stop connector,and also tried another coil before this post,granted it was a pos jss coil I ditched in the past but it always worked on the trailer just not in salt water,it did the same thing.
Im looking at it again now at night and it looks like it has normal spark but wont fire at all,got one slight back fire,the stator is set to perfect 0,its like the timing is moving so far out it wont even begin to start,but with a msd enhancer and tbm fw I dont see how thats possible.

I did try a stock fw with the original stator and got same result,keyway was good,retorqued fw to 60 lbs friend said he had a tbm with magnets flopping and rattling in it so I tried a stocker,the only thing I havnt changed is the voltage reg,any chance that could cause this? This is the first time I couldnt fig out a ign problem,this one is crazy

steve,did he have a thread going about it?

 

[Matt_E]

If only one side is sparking, the coil or coil wires are bad. No bones about it.

 

[OCD Solutions]

if only one side is sparking, the coil or coil wires are bad. No bones about it.

x2,

 

[D-Roc]

do you have a ground wire attached to your head? if not try it. couldn't hurt to have extra ground on a saltwater ski.

 

[masterblaster]

it is sparking on both sides ,It was daylight when i was looking at it,and it was so eradic come and go spark,I think it was just happenstance it wasnt firing on the one i was looking at I never tested them both at the same time. Its a newer coil and the ski started fine with it 3 times,coils in my experience either work or dont,not eradic.


large ground to starter,while box was open tried adding a second ground from main ground post direct to battery ground,no change

 

[D-Roc]

try one from battery to head bolt. just a temp one is fine for checking. i had an msd enhancer that gave me problems but it would start and act like the overheat sensor was engaged. it would backfire when i gave it throttle but it would idle fine. you got a tricky one there.

 

[FlightPlanDan]

If you have another coil, consider trying it. I would also (temporarily) disconnect the black/ white connector from the h/pole switch to rule out any switch b/s, like D-Roc suggested.

I had these symptoms. You were there!
CDI was bad.

But this sounds like stator or stator wires to me.

 

[masterblaster]

its worth saying i tried 2 msd enhancers before i closed the ebox I tried the other and it did the same thing before i switched the stator,but once the new stator was in and it fired i closed the box back up,it would be a pretty big coincidence if it were the cdi,since it started a couple times,but then ended up reverting to the same thing the epic was doing in the beginning

I honestly dont know much about the voltage regulator,but is there any chance its malfunctioning and causing the cdi to fire at the wrong time?

 

[D-Roc]

how is the starter and cables? does the cable to the starter get warm if you crank for 5 seconds a bunch of times?

 

[FlightPlanDan]

True.
I guess the only other electrical things involved are the start swittch and coil. Anything else and it wouldn't turn at all!

 

[D-Roc]

i don't know anything about them either but you would think if it failed the battery would just not charge and the ski would run on the 12v the battery is suppling and the lighting coils from the stator for spark. but maybe that is it.

 

[masterblaster]

starter turns over fine wires dont get hot, but what stated this was,put a new starter in,before tona,ski ran fine at tona,got it back home and ski wouldnt turn over,just a relay click,banged the starter and it would spark and turn over,noticed the starter was loose,pulled it to inspect,the long tiny 6 mil bolt that hold the brand new oem starter had backed out,YESH one more thing that needs red loc tite,after I put it back in ski would never start,thought maybe the voltage reg got damaged with the starter sparking.....dunno its a long shot,but ive changed everything else???????????

 

[D-Roc]

can you put a voltmeter on the battery, then check it when you crank it, and then put it on the end of the starter cable at the starter and check how many volts are getting there? did salt water get in your new starter. my brand new oem starter did the exact same thing after tona 2 years ago. i couldn't beleive water got in a new starter in one week at daytona and then it sat until spring and was locked up bad.

 

[masterblaster]

the starter would not be able to cause this issue would it? if the ski is turning over fine? whats your thinking there?

 

[D-Roc]

maybe it is making enough drain to go below 12v for the cdi and causing spark issues and cdi malfunction. i don't know its a long shot. you had the flywheel off and said the key was fine so why is it backfiring like the timing is off. my msd failed different than other peoples. usually you hear they have no spark while cranking and then light up after the let go of the green button but the motor stops spinning and it only sparks once. is it because their starters and wires and ground are causing a major battery drain? also throw a jumper cable from the ground on battery to the head bolt where the spark is. just for s and gigs.

 

[waterfreak]

just a though... have you changed the spark plugs? it sounds like what a fouled plug could do!