Guest Posted July 15, 2009 Posted July 15, 2009 Hi, living in denmark, but am english. Just had a major service on a 1986 gpz600r and i'm told the carbs are knackered, all a bit technical danish that i tried to follow, but the gist was at tickover and low revs the carbs are sucking in air from somewhere...sorry, not a mechanic...even if the idle screw is tightened or loosened completely (didnt get the translation) the engine is still revving too much..about 1500rpm..garage says get a new or good used set...any ideas out there folks? Seen used on ebay but id like an idea of price for new too...cheers..Mark Quote
Guest Posted July 15, 2009 Posted July 15, 2009 Hmm im not sure... are there no new ones on ebay, sometimes shops sell new on there..Also wondering... would they manufacture new... its a 13 year old bike... would the new ones fit?Sorry not helping am I lol Quote
Guest Posted July 15, 2009 Posted July 15, 2009 Hi, living in denmark, but am english. Just had a major service on a 1986 gpz600r and i'm told the carbs are knackered, all a bit technical danish that i tried to follow, but the gist was at tickover and low revs the carbs are sucking in air from somewhere...sorry, not a mechanic...even if the idle screw is tightened or loosened completely (didnt get the translation) the engine is still revving too much..about 1500rpm..garage says get a new or good used set...any ideas out there folks? Seen used on ebay but id like an idea of price for new too...cheers..Mark if air's getting in check the connections to the carbs from the airbox and engine, the black things that attach carbs to engine are known as chimneys check these for integrity/spilts and a good seal..check out cmsnl.com for parts, there a dutch company so euros, but have exploded diagrams and part numbers etc.. used them before not the fastest, but good.. Quote
Guest Posted July 15, 2009 Posted July 15, 2009 WF - would someone who is not mechanically minded be able to do this and know what you're on about? Quote
Guest Posted July 15, 2009 Posted July 15, 2009 vicks can you move this to pitstop, the mech minded hang out there... Quote
Guest Posted July 15, 2009 Posted July 15, 2009 (edited) WF - would someone who is not mechanically minded be able to do this and know what you're on about?its just the same as pressing a bicycle tyre whilst looking for splits and wetting the sides to see if theres an air leak.. it will dry out if theres a hole..or putting something, hand over ans seeing if revs change or can feel sucking.. its not that difficult..with engine running squeeze each chimney in turn, any dramatic difference indicates a fault as squeezing is increasing the leak and the air flow.. Edited July 15, 2009 by Anonymous Quote
rennie Posted July 15, 2009 Posted July 15, 2009 moved by me I agree!, worth checking the chimneys etc first!anybody could do it, just look for cracks/splits in the rubber Quote
Bill_on_a_bike Posted July 15, 2009 Posted July 15, 2009 A bike that old your best bet is probably ebay.http://cgi.ebay.co.uk/kawasaki-gpz-600-carbs-GPZ-GPX-spares-parts-fuel_W0QQitemZ270425488372QQcmdZViewItemQQptZUK_Motorcycle_Parts?hash=item3ef69d7bf4&_trksid=p3286.c0.m14&_trkparms=65%3A12|66%3A2|39%3A1|72%3A1683|293%3A1|294%3A50 Quote
Guest Posted July 15, 2009 Posted July 15, 2009 You could try here...http://shop.wemoto.com/index.dyn?make=K ... 4wod1R_w-wChoose model year of bike and see whats on there.. not looked myself .. Quote
Guest Posted July 15, 2009 Posted July 15, 2009 You could try here...http://shop.wemoto.com/index.dyn?make=K ... 4wod1R_w-wChoose model year of bike and see whats on there.. not looked myself ..wemoto are great for serviceble parts, show in stock and very fast turnaround..but not replacements especially if you need new chimneys, and they dont have an exploded picture so you can see what parts are involved.. what goes where... also cmsnl will give you new genuine parts so an idea of actual cost against pattern or copy../used Quote
Jixerman Posted July 15, 2009 Posted July 15, 2009 You could try here...http://shop.wemoto.com/index.dyn?make=K ... 4wod1R_w-wChoose model year of bike and see whats on there.. not looked myself .. LOLFirst place I lookedNo complete carbs but a few carb bits, seals etcI was wondering if push came to shove, would a carb from a newer kawasaki do the job with a bit of rejetting and modding? Quote
Guest Posted July 15, 2009 Posted July 15, 2009 Thanks so far...i'll try the chimneys, to be honest i would hope the bike shops done this already...he seems to know his way around things and hes done a good service..he's phoned a couple of times and admitted he's not happy with the carb, seems to rattle at low revs and hes tried all he can to adjust...its had new timing chain, all o rings jets gaskets etc..pain in the bum if ive got to get a new carb after all that Quote
Guest Posted July 15, 2009 Posted July 15, 2009 Gonna work out more expensive than getting a new bike at this rate lol... Quote
Guest Posted July 15, 2009 Posted July 15, 2009 Thanks so far...i'll try the chimneys, to be honest i would hope the bike shops done this already...he seems to know his way around things and hes done a good service..he's phoned a couple of times and admitted he's not happy with the carb, seems to rattle at low revs and hes tried all he can to adjust...its had new timing chain, all o rings jets gaskets etc..pain in the bum if ive got to get a new carb after all that4 carbs mate.. 4 cylinder bike with a carb each.. I still think its the chimneys,i believe your bike is the zx600, (gpz600r)http://www.cmsnl.com/kawasaki-zx600_model12816/ Quote
rennie Posted July 15, 2009 Posted July 15, 2009 So do I If the worst comes to the worst you'll have to take all 4 carbs off bike and send them somewhere to get fettled!I still think it'll be a connection though! chimneys, air intakes, breather pipes etc.any of the rubber bits! Quote
Guest Posted July 15, 2009 Posted July 15, 2009 another quick test is to get a spray of easy start and spray in the area of the carbs, any leaks will draw in the mixture and the revs will climb... (like a hoover sucks up dust..) Quote
Guest Posted July 15, 2009 Posted July 15, 2009 He says its ok once you increase the revs though...just at tickover it rattles..still not sure why the tickover wont come below 1500rpm even when the screw is fully tightened... Quote
Guest Posted July 15, 2009 Posted July 15, 2009 the air is being sucked in at tickover because the throttle bodies/carbs cause a restriction.. once you open throttle the draft is pulled through the carbs and overcomes any leak as it smaller than the suction/draft.. Quote
Guest Posted July 15, 2009 Posted July 15, 2009 Will it be ok to ride for a while til i get a replacement carb or am i going to bugger it up bigtime...see how i got technical there? Quote
Guest Posted July 15, 2009 Posted July 15, 2009 Will it be ok to ride for a while til i get a replacement carb or am i going to b*gg*r it up bigtime...see how i got technical there?you can ride it, it shouldn't get any worse, unless the split gets bigger.. is anything loose, you mention a rattle.. a loose mounting/bolt would cause a poor seal.. Quote
Guest Posted July 15, 2009 Posted July 15, 2009 Well mechanic says the rattle is coming from the carbs at low revs..he reckons its the, and im afraid i dont know the english word sorry, so i'll describe as best i can, the butterfly type hinges that open when you open the throttle... Quote
Guest Posted July 15, 2009 Posted July 15, 2009 Well mechanic says the rattle is coming from the carbs at low revs..he reckons its the, and im afraid i dont know the english word sorry, so i'll describe as best i can, the butterfly type hinges that open when you open the throttle... can you give me the year of your bike, thought the zx600 had tubes that went up/down not flatslides.. will check..what your describing is a butterly valve, heres the inside of one carb on a zx600 '96http://i250.photobucket.com/albums/gg250/simonevans73/carburetor-parts-1998-e6-zx600_bigk.gif Quote
rosszx9r Posted July 16, 2009 Posted July 16, 2009 1986 gpz600r and i'm told the carbs are knackered, all a bit technical danish that i tried to follow, but the gist was at tickover and low revs the carbs are sucking in air from somewhere...i think you should get a second opinion as i really don't think your carbs are knackered. whats the mileage?new ones are £1350 from kawasaki it could be the float hieght thats wrong giving too much fuel at low speed or the choke mechanism thats stuck. the rattling you later describe could be the sliders rattling up and down. this could be a sign that the diaphram isn't fitted properly or has a tear (£130 each )i'm not sure a cracked 'carb connector' (kawasaki term ) would cause high idle speed though.new carbs may well fix the problem but it's a very drastic way of getting them set up correctly. seriously, try somewhere else. the bike will run fine even with bad carb settings. Quote
Guest Posted July 16, 2009 Posted July 16, 2009 Holy moley...thats expensive..!! Its high mileage..40k, but it is over 20 years old. he did mention the sliders rattling...but as hes the mechanic he ought to be able to fix it IMHO..Think i'll get it set up as best i can and then scour ebay for a good set of carbs...see if that fixes it. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.