300 4x4 running rough
#1
300 4x4 running rough
Hey all, thanks for the add. New member here! Am running out of ideas. I have a 1993 Honda Fourtrax 300 4x4. It' been a great bike for many years but lately been having issues. Most of the time it will idle fine, but given any throttle it sputters and will backfire sometimes. Seems like it' low on power as well (when it' not sputtering). In the spirit of maintenance and bringing this thing back up to par, I've drained the metal tank, cleaned the pet **** valve, replaced the plug, the fuel lines, the carb and now the ignition coil but it doesn't seem any better. What's next? Where do I head now?
#2
I once had one that spluttered at just over idle, if you got it revving past that it seemed OK. Changed carb to a known good one and it still did it, so fitted a new CDI, instant cure. However be very sure it isn't the carb before buying a new CDI, Chinese "knock offs" need setting up, and be sure you know what year/ model you have, a HM3 CDI for example, is different to an HM5, which is different to a HM7.
#3
#4
If you are sure it is a 93 bike, a 93 CDI should be OK. Honda colour coded the wiring plugs, Off white, green, red, and the last CDI had a single big connector plus two wires with bullets on the ends, sticking out for the fan motor wires. I would remove the float bowl on your original carb, remove and blow through the jets, and the holes they came from, clean the float bowl, re-assemble and try the bike with that carb on, before fitting more new parts.
#7
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