Misssppelllleddd Posted July 5, 2009 Report Share Posted July 5, 2009 Ok I was just riding through some open trails and then all off a sudden my right cylinder stopped firing. One cylinder would hold up for riding back to camp and I heard no backfires from the exhaust when I was revving or slowing down. But the thing that gets me is that the right cylinder stops firing at mid to high range. It idles just fine and runs like a champ going through low end but when mid range comes in then the cylinder won't fire at all. The engine/intake/exhaust/electrical mods I run are, 4mil long rod, 795 series pistons, Wildcard Aggressive Trail Port, VF3 reeds, 1/4 reed spacers, 2 in 1 intake with a 33mm PWK, Filter pod, Trinity head, 19cc domes (205lbs of compression), Pro-circuit platinum pipes, and a dynatek fs ignition. Any suggestions? Spark plug boots? Coil? Quote Link to comment Share on other sites More sharing options...
SAVAGE420 Posted July 5, 2009 Report Share Posted July 5, 2009 (edited) IMO thats WAY, under carbed. that needs TWO 33mm carbs minimum not one lil one. Hell i would be running dual 35's with that man. HAve you checked out any of the electrical though...but i still think thats a tiny carb for that motor man... Edited July 5, 2009 by savage420 Quote Link to comment Share on other sites More sharing options...
banshee_terror_ Posted July 5, 2009 Report Share Posted July 5, 2009 check the spark plug boot the coil any electronics. i think the carb is fine if you tune it right. a fresh set of pluggs wouldnt hurt either. compression test it also. you could of burnt up a piston Quote Link to comment Share on other sites More sharing options...
Misssppelllleddd Posted July 5, 2009 Author Report Share Posted July 5, 2009 Ok thanks! But why would one piston burn out and not the other? Both cylinders are running off the same carb. Quote Link to comment Share on other sites More sharing options...
sheerider1026 Posted July 5, 2009 Report Share Posted July 5, 2009 im gonna throw this out there, and being its tyler i am sure it was his first thought.. did u already change out for a new set of plugs?? besides that.. i would replace the plug caps.. i had the same thing happen to me.. a burnt plug cap causes a weak spark, and at higher rpm's the cylinder pressure increases making it harder for the plug to fire.. try swapping the plug wires and see if the problem follows the cap. Quote Link to comment Share on other sites More sharing options...
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