Need help with a snowmobile.

[Amianthus]

My neighbor has a 1993 Ski-doo Formula Plus EFI. We are having problems with the EFI system on this sled. One injector seems to stick wide open and the other fires fine. I am guessing that they are mechanical injectors. But I would like to get some wiring diagrams and vacuum diagrams so that maybe we can troubleshoot this and fix it. It was a sled that sat for 5 years without being run after someone ran over it. I think someone tried to start it and took it apart trying to fix it and they screwed it up. So the wiring is in question amongst other things. Anyone have any advice? It would be greatly appreciated. Thanks.

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'99 2500 ISB QC SLT (No Leather!), 4x4, 5sp w/McLeod, 4:10, BD-II, PE, PE-EZ, 4"exh. , Pac-Brake, A-Pillar gauge pod w/boost and pyro, Line-X, V-1, lights, siren, lic. plt. frame says "Diesel Fumes Make Me Horny!", and much more goofy stuff.

 

[Jeff H]

Its more than likely bad engineering. Arctic Cat is the only one that rairly ever has problems with its efi. I believe Polaris gave up with efi.
I would think there is an o 2 sensor in the exhaust. Check it. If you have a battery that suppies power to the efi. Be sure the battery and charging system is good. If all else fails stop in and see a dealer. Those machines can be a pain to work on.

 

[Fireman Dave]

Aron,

Why not just drop an ISB in her? #ad
You know you want to! #ad


Dave

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2001 2500; SLT; 4x4; QC; LWB; Auto; 3. 54 LS; 265s; Camper; Tow; Sliding Rear Window; Travel Convenience Group; Cab Clearance Lamps; Forest Green