Bike: 2001 ZX6R ~35000KM
Maintenance done within last year by PO:
Plugs, air filter, fuel filter, valve adjustment, carb cleanand sync, new float bowl orings, new float valve, float adjustment, battery approx.2 years old, carb is jetted but unsure of exact #s without pulling it
Issue: Stumble, misfire at idle. Misfire until about 4K RPM.After that range bike runs fine.
Description: Bike was running fine until about 1 week ago,maybe a little bit rich (sniff test).
Out of the blue, began stumbling and misfiring at idle andup to about 4K rpm.
Pulled tank and airbox to inspect. Noticed some black goop(somewhat consistent to oil) near #2 coil. Cleaned it up. Didn’t noticeanything obviously disconnected or torn vac lines. Pulled plugs and they lookedokay. Surprisingly not wet. Put everything back together and started up.
At this point, bike was again running rough. Touching throttle would send revs down. Let it warm up and turned it off.
Came back to it a couple hours later and this time it firedup (no bogging but still stumbling). Took for a quick spin around the block(still missing under 4K). Sprayed brake cleaner on headers and it evaporated onall 4.
Gas in tank is about 2 weeks old- Shell 91.
Not sure where to start looking with this issue so all help is appreciated.
Thank you in advance
Maintenance done within last year by PO:
Plugs, air filter, fuel filter, valve adjustment, carb cleanand sync, new float bowl orings, new float valve, float adjustment, battery approx.2 years old, carb is jetted but unsure of exact #s without pulling it
Issue: Stumble, misfire at idle. Misfire until about 4K RPM.After that range bike runs fine.
Description: Bike was running fine until about 1 week ago,maybe a little bit rich (sniff test).
Out of the blue, began stumbling and misfiring at idle andup to about 4K rpm.
Pulled tank and airbox to inspect. Noticed some black goop(somewhat consistent to oil) near #2 coil. Cleaned it up. Didn’t noticeanything obviously disconnected or torn vac lines. Pulled plugs and they lookedokay. Surprisingly not wet. Put everything back together and started up.
At this point, bike was again running rough. Touching throttle would send revs down. Let it warm up and turned it off.
Came back to it a couple hours later and this time it firedup (no bogging but still stumbling). Took for a quick spin around the block(still missing under 4K). Sprayed brake cleaner on headers and it evaporated onall 4.
Gas in tank is about 2 weeks old- Shell 91.
Not sure where to start looking with this issue so all help is appreciated.
Thank you in advance