idle screw, and runs like crap in neutral

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Chadatious
Posts: 113
Joined: Fri Jun 18, 2010 9:28 am
My Bike: ZXR 400 H1
Location: Kent

idle screw, and runs like crap in neutral

Post by Chadatious »

Okay my bike was ticking over a 2k and i though it was abit ghigh so was guna sort it after college today but now its at 3k and i was wondering if it would be the idle screw, and just wondering whewre is it?

Alos when i put the bike in neutral sometimes its at 3k next time it makes horrid judders and dies?

Tbh im fed up with it already lol problem after problem
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RedexRobB
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Joined: Fri Aug 30, 2002 7:37 pm
My Bike: ZXR400L3
Location: Ipswich, Suffolk

Re: idle screw, and runs like crap in neutral

Post by RedexRobB »

Not having much luck, are you?

High idle speed especially when coming to a stop is usually leaky inlets or possibly airbox. On the H model (it is isnt it?) im not sure where the idle screw is. On the L model its a little black knob down on the right hand side just above the clutch cover. clockwise to increase revs, ACwise to decrease revs.
Chadatious
Posts: 113
Joined: Fri Jun 18, 2010 9:28 am
My Bike: ZXR 400 H1
Location: Kent

Re: idle screw, and runs like crap in neutral

Post by Chadatious »

It seems to rev high when hot, and the o-rings i replaced are tricky so i recon they may have disturbed them. but what strange is when i put stand down it cuts out even ion neutral :/ but i am running that redex stuff you suggested in it so wouldnt be anything to do with that would it? oh and yes its a H
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RedexRobB
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My Bike: ZXR400L3
Location: Ipswich, Suffolk

Re: idle screw, and runs like crap in neutral

Post by RedexRobB »

Has it only started doing this since you put the redex in? More than likely that if thats the case.

What O rings did you change?

Check the switch on the clutch, theres a small connector block make sure its in. Check the switch down by the side stand too.
Chadatious
Posts: 113
Joined: Fri Jun 18, 2010 9:28 am
My Bike: ZXR 400 H1
Location: Kent

Re: idle screw, and runs like crap in neutral

Post by Chadatious »

sortedn stand, and ive found idle, and i replaced the ones between the carbs and airbox. and so u recon it could be the redex? its perfomed better since i used it coz it needed a good flush but its been like it since ive rode it so could be anything.

Also bad luck i ran out of electric on way how so had to go down side roads with only side lights on as when i puit main on it died and i had to keep bumping it :/ starting to get abit peed now if i get much more troube im guna fix it and sell it lol.
Fastforward
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Joined: Mon Apr 19, 2010 12:00 pm
My Bike: Zxr400 h1

Re: idle screw, and runs like crap in neutral

Post by Fastforward »

Seems to me like its your valves
Chadatious
Posts: 113
Joined: Fri Jun 18, 2010 9:28 am
My Bike: ZXR 400 H1
Location: Kent

Re: idle screw, and runs like crap in neutral

Post by Chadatious »

Yeh thats what i was worried about, but when i checked the carbs and that, i found the shop that had restricted left the two middle inlet rubbers loose to those 2 cyclinders must have been getting too much air as its as sweet as now :D
Fastforward
Posts: 30
Joined: Mon Apr 19, 2010 12:00 pm
My Bike: Zxr400 h1

Re: idle screw, and runs like crap in neutral

Post by Fastforward »

Glad u got it sorted, i would have said probably a leak and bad mixture also but u kind of checked them off lol. Mine hanged no matter what mixture, im rebuilding and it must have been my valves not seating right..lots of carbon buildup aswell
Chadatious
Posts: 113
Joined: Fri Jun 18, 2010 9:28 am
My Bike: ZXR 400 H1
Location: Kent

Re: idle screw, and runs like crap in neutral

Post by Chadatious »

Yeh luckily it wasnt valves as im trying to sell it lol. But ive found a bike in a shop i like so i may trade it in.
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