Sylvester Posted May 10, 2017 Share #1 Posted May 10, 2017 Rebuilt the carbs on my 2002 and fired it up yesterday. While on choke trying to warm and set the idle @ 1000 rpm, it was backfiring loud but got the idle set and shut it down. This evening I fired it up after warm up and I cut the choke and it idled at 1000 RPM. The right side exhaust was cold but the left wasn't. I am thinking coils or??? Oh by the way I put new NKG plugs in before start up. Link to comment Share on other sites More sharing options...
BlueSky Posted May 11, 2017 Share #2 Posted May 11, 2017 I would check to see if it had spark at the plugs first before I started throwing money at it. Link to comment Share on other sites More sharing options...
cimmer Posted May 11, 2017 Share #3 Posted May 11, 2017 Have you set the slow speed jets and synced the carbs yet? I would do that and check the plugs for spark before throwing any money at it myself. Good Luck Rick F. Link to comment Share on other sites More sharing options...
bongobobny Posted May 11, 2017 Share #4 Posted May 11, 2017 Another likely possibility, especially with one side as opposed to front/back, check the two carb vent hoses, I'll betcha an insect has made a nest in one of the hoses. What that does is shut down the venting of the fuel bowls on one side which traps air in the bowls and creates air pressure when the fuel tries to fill the bowl. Just take one hose at a time and try to blow through it. If it is plugged, you will know it! I went through this about 4 years ago myself... Link to comment Share on other sites More sharing options...
Sylvester Posted May 11, 2017 Author Share #5 Posted May 11, 2017 Very interesting. I will look into this after the spark check. Thanks Another likely possibility, especially with one side as opposed to front/back, check the two carb vent hoses, I'll betcha an insect has made a nest in one of the hoses. What that does is shut down the venting of the fuel bowls on one side which traps air in the bowls and creates air pressure when the fuel tries to fill the bowl. Just take one hose at a time and try to blow through it. If it is plugged, you will know it! I went through this about 4 years ago myself... Link to comment Share on other sites More sharing options...
Sylvester Posted May 13, 2017 Author Share #6 Posted May 13, 2017 Had time this morning to pull the fuel tank and air plenum, checked the plugs and have fire there, then removed the right vent tube and it was clear, so therefore I will have to get it to the shop for tuneup etc. Thanks for all the help. Link to comment Share on other sites More sharing options...
Sylvester Posted May 13, 2017 Author Share #7 Posted May 13, 2017 I just noted that I titled this wrong, IT IS THE RIGHT SIDE CYLINDERS ARE COLD NOT LEFT. Age thing I guess. Won't make any difference, same problem. Link to comment Share on other sites More sharing options...
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