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OK its going to a different shop an hour and twenty minutes away, they cant look at it for a week and then probably at least 1 week to fix if they order any parts.

It starts and idles with the first cdi but stumbles and shudders when giving throttle and really doesn't do much. The other cdi was too hard to get started and to be at all reliable and the fuel mixture was at 3.5 turns out and had to be started WOT. but it did go.

I've tried the starter fluid trick spraying it around hoses, intake manifold and airbox none of that changed the idle so there shouldn't be a leak (visual checks and feeling didn't reveal anything either)

So with the current CDI I guess the correct explanation is that it idles perfect at 1.75 turns out on the mixture screw and stumbles and almost dies if you twist the throttle. It's getting gas when I've turned it off and removed the carb the bowl is full. (the tank is lower and is pumped via vacuum)

Is it a main jet issue? or just take it to the pros in a week? or something else.

It's been a month and a half I'm tired chasing my own tail.

Thank you

I put in an new ngk plug and new starter clutch. because mine went out. I put everything evrything together (oil too) turned the key pushed the button it started instantly ran real good for 30 seconds to a minute I gave it a little throttle and ok gave it a bunch I bogged down so I leaned it up a smidge and then it started knocking horribly it would still respond to the throttle but I shut it down. I've heard mowers make the same noise when low on oil, but my level reads ok and I had given it right around a quart and it read right on the stick on the ground not on the kickstand.
Please give me an idea or should this be scrapped and cut the losses.

Getting plenty of gas checked that, thanks for the recommendation. I want to say its the coil but I can't seem to get the right coil. It's a 2 wire I've tried 4 of them. and only the one that came with the scooter seems to work correctly the others I've gotten fire like every third or forth time it should. the coil it came with fires for a while and then once the motor is getting warm it starts acting crazy. the choke appears to be working correctly too. the carb has been cleaned twice. Just an hour ago I tried another coil and the starter started turning the motor and then just makes a spinning sound but doesn't appear to be doing anything. so I need to take it apart and clean that up and check connections

1 cleaned carb
2 replaced stator and pickup ( was reading as a short)
3 replaced CDI and replaced it again (thinking it was causing the problem not sparking enough)
4 attempted to replace the coil same time as 3 the new coil would spark about 1/3 to 1/4 as many times as it needed
5 checked and re checked valve adjustments
6 adjusted the fuel air mixture to about 1 1/2 out (might be a bit lean now harder to start)
7 replaced the exhaust gasket.
8 I'm sure I've forgotten something

I just want to go for a ride at this point.

Thanks for any input

shouldn't just about any 2 wire coil work ?

Well I thought it was fixed it starts and runs in the garage well it idles with a barely noticeable miss. If you give it gas it will start to rev and then pop (a nice little backfire from the exhaust) I've adjusted the air mixture but it also misses occasionally at idle. I've adjusted and readjusted the valves it starts as quick as I've seen. Just replaced CdI fuel filter voltage regulator an stater and pickup I think that covers it thanks to whoever checks in

 The alignments with the tdc on the cam and the flywheel were lined up and the valves adjusted again and double checked once tightened. Is there a chance my cdi is bad or got shipped wrong? The part was labeled seadoo starter something, it fits perfect, the plug matches but most bombardier engines are 2 cyl or 3cyl. I just don't know the next step should I order another cdi? 

I'll flip it around. I put it back on the way I found it but who knows if it was right when I got it. I'll do that in a bit and report back. I don't have a compression tester yet (Harbor Freight here I come) other than the finger plugging the hole test I got ten of those testers, but they aren't calibrated.


OK flipped the intake valve cover. The engine cranked a bit quicker when it did fire it sounded stronger ( not sure if that's the word I want to use)