spark problems on both sleds - Snowmobile Forum: Your #1 Snowmobile Forum

jkeiffer · 08-11-2009, 04:46 PM

first off glad to be here, just picked up my first two sleds and I am pretty pumped up about them even though they are old sleds.

first one I have a 72 scorpion stinger II 400 all original, I set the point gaps and spark plug gap and I have really strong spark on one cylinder with no spark on the other. I have tried changing wires around for the external coils and both function properly. I assume that I have a dirty point set or a bad wire. before I delve into this thought I wanted to know if the generator coil was the same coil for both points sets an if not then how do I test the generating coil as well as the condensers to tell if they are good or bad?

second my 74 arctic cat cheetah 340 has no spark and I am not sure where to start as I have no electrical schematic for this engine (actually a 73 engine and wiring harness) I just got this one so I have not checked the points gap or anything a all yet.

Thanks in advance and talk to you all soon,
jkeiffer

**RJ Gleason** · 08-11-2009, 06:36 PM

Uses separate coils for each cylinder probably the points need cleaning or replacing.
Probably the same with the Cat too.