2 stroke '95 30hp, what's wrong?

[59 lonestar]

Two videos. You can see it revving itself and sounding like it is missing some fires. In the first video it almost cuts out but works it's way back. In the second, it just dies.

http://www.youtube.com/watch?v=C3I96UxH4yk&sns=em

http://www.youtube.com/watch?v=DUjxGC-uvmo&sns=em

Brand new gas, clean carb and fuel lines don't seem to be it. After it runs for 5 or so minutes it has a gagging stall. I usually can re start it, but restarting gets harder and harder as I keep trying to "blow it out". Ive noticed that the sparks get really oil fouled, and I've been attributing that *** the fact that I'm racing it in neutral.

Thanks.

 

[schematic]

Re: 2 stroke '95 30hp, what's wrong?

sure sounds electrical. Do the standard CDI diagnostics. It;ll show up....

http://www.cdielectronics.com/downloads/troubleshooting guide/

 

[hotrod53]

Re: 2 stroke '95 30hp, what's wrong?

I agree ... electrical, fuel could not cause an instant cut in /cut out like that. Plugs, wires, coil, trigger? I wouldn't run it like that too much, I had a similar issue with a broken plug wire. The spark built up in the coil has to go somewhere, if its a wire or a plug it will arc right out thru the side of the coil to ground. A coil can go bad and be intermittant like that too, probably best to isolate it to which cylinder it is first. You can then swap coils, wires, ect and see if the problem follows the hardware.

 

[59 lonestar]

Re: 2 stroke '95 30hp, what's wrong?

I changed the CDM and she's running. Still a little bit of a punch every 10 seconds or so; but I was able to run her for a solid 20 minutes without the prior loss in power issues or loss in idle. Thanks.