Question about Suzuki GSF 600 N Bandit Motorcycles

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My suzuki gsf 600 misfires @ 4000-5000RPM only on cylinder 1

My suzuki gsf 600 bandit misfires at 4000-5000RPM only on cylinder one .. this is really bugging me as its my only transport to work. i had various problems from the start of the winter period ie not starting , misfiring , rough running. i have replaced spark plugs, coils, ht leads and spark plug caps. i have also cleaned carbs , balanced and set air and fuel mixture to correct position I have a k & n air filter , iridium spark plugs and delkevic downpipes and a blue flame end can. any help and advice would be much appreciated

Posted by reece horsley on


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  • 450 Answers

If its only on 1 cyclinder and your sure the carb and sparks ok then the next step is to do a compression test to see if the fault lies with the engine, i.e. valves, rings etc,

Posted on Feb 20, 2013

  • 1 more comment 
  • reece horsley Feb 20, 2013

    hi .. im going to strip carbs again tomorrow so hopefully it is carbs going to check the diaphrams n any muck and dirt which shouldnt really be in there as i did them at the weekend .

  • ibrown1967
    ibrown1967 Feb 20, 2013

    worth a try is that cyclinder/carb more open to bad weather if bikes on side stand

  • reece horsley Feb 21, 2013

    it is and it isnt .. its on the left side so water could run onto it



5 Related Answers

Stealthy Gav

  • 6 Answers

SOURCE: honda cbr 600 wont start

hi, each lead has the specific number on it. if you do this correctly then they genrally give you an idea to where the sit in the coils( the way they bend :-) ) also i believe the coils are better off been attached to the frame once you are sure leads are in corect order and possitioned correctly in the coils.i just presumed the coils neaded earthing. make sure battery is pleny charged as a bad battery can just hinder. it is also very easy to flood the bike so just check the plugs again. if they are unusually wet then dry them off and try again . otherwise maybe try cleaning all electics.

hope this somehow helped
gavin barraclough

Posted on Apr 26, 2009



  • 3 Answers

SOURCE: misfiring at speed on gilera 200 scooter

This sounds more like a lean fuel condition than ignition. If it was stored over the winter without the gas being drained or a fuel stabilizer being added, you'll likely have varnish build-up in the fuel system that is not allowing sufficient fuel flow.  If your engine is fuel injected, it's likely your injector is partially clogged.  If it's carbureted, your carb jets may be partially clogged or your carb float may be sticking and not allowing the needle valve to fully open.  Fill the gas tank with fresh gasoline, but leave enough room for a can of Sea Foam.  The Sea Foam may be able to break up the deposits and allow fuel to flow again.  However, there's no guarantee and the fuel system may have to be disassembled to be cleaned.

Posted on May 05, 2009

Martin Bergin

  • 133 Answers

SOURCE: i have a 2002 suzuki bandit 600 that has been in

have you a spark?sounds like ouyr float level is too high and the carbs are flooding,try to decrease the float level,she will not start with too much gas

Posted on Mar 04, 2010


  • 426 Answers

SOURCE: Hi , my suzuki Bandit GSF 600 2002 plate, off road

Ride the bike 20 or so miles on open road. Stop and remove plug to inspect. 'Are they black or white ?

Black =rich white=lean

Posted on Feb 01, 2011


gavin jones

  • 1508 Answers

SOURCE: Was riding my ZZR600E out locally last week

You can check the primary and secondary resistances in the coils, dont know offhand the values, but the coils should be the same.
The fact is gets worse as it warms could mean a carb float is flooding,
The vacumn fuel tap can be a problem, this can also cause fuel to flood into the sump , and cause this problem.

Posted on Aug 15, 2011

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