Backfired - Snowmobile Forum: Your #1 Snowmobile Forum

surc6304 · 11-25-2006, 06:14 PM

Hi, i just ran my 1993 lynx mountain cat 340.After doing the normal stuff after it's been sitting for a while. I changed out the fuel lines, replacecd the fuel pump, spark plugs, new gas,oil and cleaned the carb twice.

it ran for a bit but shut off after moving about 2to 3 feet. The only time it moved more than 2to3 feet it stopped and then backfired, now it won't start again after trying everything i could think off.

Any Ideas??

**smallengineguy** · 11-26-2006, 05:56 AM

You need to get an inline spark tester (avail at auto parts stores) and see if you have spark. Usually when they backfire and die, the CDI pooped out.

**RJ Gleason** · 11-26-2006, 06:35 AM

I'm with SEG on this one

sledhead67 · 11-26-2006, 10:46 PM

another thing to check is the gap on the plugs. i had a 79 polaris centurion 500 triple which did the same thing i put the gap like it was needed and it ran. just a suggestion. nick

**RJ Gleason** · 11-27-2006, 10:29 AM

Set plug gap @ 0.030

surc6304 · 11-27-2006, 10:57 AM

cool thanks

sledhead67 · 11-29-2006, 08:14 PM

did it fix the problem on your sled. let us know. nick