2001 model. Constantly misfiring when it warms up. Has new spark plugs. Carbs have been cleaned. Still misfiring.
Check the spark on all cylinders with a spark tester to see if all have spark. If good spark on all do a compression test to see if there is a problem with one of the cylinders, i.e. burned/bent valves, hole in piston.
SOURCE: zxr750 h1 rough on idle when cold almost misfiring
have you balanced the carbs as if they are out of sync it will run rough
SOURCE: No fire to plugs
hi mate,, pretty rare 4 these babies to pack up ,,but if there is no spark,,1st thing u will have to get checked is the cdi box,, which operates the sparking system, as well as the coils,, rare that the coils pack up,, check the wires on the coils b4 u go any further,, make sure they are all secure,, and pull of the plug caps and just snip a bit of the ht wire ,,ie the big thick wire from the coil to the plug ,,snip a bit of the cap end so u can see a couple strands of copper wire in the core of the ht wire,, then replace the cap,, if all that is cool,, then its a cdi prob,, if u can see if u can borro one to try out,, any probs come back and step 2 il take u threw,, cheers
SOURCE: bike has been layed up for a while. misfires below
Hi there,
If u have left the bike standing
SOURCE: I have a 2001 Kawasaki Vulcan 750 that has a
premium gas with some octane booster for a couple of tanks should do the trick because even though you cleaned the carbs there still is gunk and **** in the lines..i also suggest fogging the bike with seafoam good luck i hope this helps
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