hipringle Posted July 16, 2010 Report Share Posted July 16, 2010 its a 99 g model, starts up & the 4 headers get instantly hot but it doesnt like to idle & it fires like its running on 3 cylinders when you rev it up. dont know its history but I know its been stood for about 6 month, any ideas anyone why its firing on 4 pots but sounds & feels like 3?, any known probs to look at first? thanks Link to comment Share on other sites More sharing options...
AntLockyer Posted July 16, 2010 Report Share Posted July 16, 2010 Carb balance would be my first guess. Link to comment Share on other sites More sharing options...
Ascalon Posted July 16, 2010 Report Share Posted July 16, 2010 I had a similar problem with my ZXR750. I thought it was ablocked idle jet, but the problem did not clear up until I took out the emulsion tubes and cleaned each one individually and the she was sweet. A Link to comment Share on other sites More sharing options...
nigel.ted Posted July 16, 2010 Report Share Posted July 16, 2010 same when i got my g2 carbs off and clean/balance and new plugs good as gold Tip......make sure you have a good phillips screwdriver the float bowl screws are made of cheese! Link to comment Share on other sites More sharing options...
hipringle Posted July 16, 2010 Author Report Share Posted July 16, 2010 thank you chaps, I,ll get some new plugs in & take the carbs off, cleaned/balanced & get it sorted then. Link to comment Share on other sites More sharing options...
kwakap Posted July 17, 2010 Report Share Posted July 17, 2010 I am just about to clean the carbs out on mine as it does the same thing, any one got a name of a good carb cleaner that i can put in an ultrasonic cleaning bath (handy "find") i assumed some normal degreaser could go in? could you post if it sorts it? Cheers Darren Link to comment Share on other sites More sharing options...
Gregorious77 Posted July 17, 2010 Report Share Posted July 17, 2010 Ive had this before on my G2, check the needles are in the slides properly. They are held in by a spring and plastic bung, this bung can pop out and let the needle move about seperate to the slide. Another thing to watch for is the little sealing o-rings under the top caps, they seal up the hole where the vacuum lifts the slides, if they fall out the bike will run shite as the slides will not get lifted. Both of these problems will not be apparent until the bike it throttled up as the pilot circuit for idle is not affected. the bike will idle properly but go all shite under throttle. Link to comment Share on other sites More sharing options...
hipringle Posted July 21, 2010 Author Report Share Posted July 21, 2010 well chaps after all the hassel taking the carbs off & inspecting them it turned out it was a dodgy ht lead, on number 4. Thanks for your help etc I think I was lucky it was nowt expensive. Link to comment Share on other sites More sharing options...
Gregorious77 Posted July 21, 2010 Report Share Posted July 21, 2010 Glad you got it sorted. I got a spare set of coils for mine when I was trying to sort out my issues. still got them just in case. Link to comment Share on other sites More sharing options...
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