Problem with the zxr (new video)

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JulianWerner
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Problem with the zxr (new video)

Post by JulianWerner »

Hi guys.

I just bought a zxr 400 1991 modell.
i tried a long time today, getting it to run.

After 20 minutes i got i to run, but i died every time i toucht the throttle.
Finaly the bike got warm, on idle running. and them it some gas. But i response very bad, and dosent go over 6000 rpm's..

Video that i mine on youtube .
http://www.youtube.com/watch?v=NrMPERDIDQY&feature=plcp


I hope you guys can help me. Im new to kawasaki and 4 strokes.

And another small question, what spark plug should i use ?
Last edited by JulianWerner on Mon Dec 31, 2012 5:30 pm, edited 1 time in total.
* Aprilia RS 125 (2000 modell / 2 Stroke)
* Kawasaki ZXR 400 (1991 / 4 Stroke)
ross46
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Re: Problem with the zxr (video)

Post by ross46 »

Did you find out what the problem was with this? See no one has replied for a month?
JulianWerner
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Re: Problem with the zxr (video)

Post by JulianWerner »

I bought a new set of carbs, second hand.
Cleaned them and i have a new problem.
I think the new carbs are over flooding, they are leaking.
3 out of 4 i think.

Guess i buy a carb repair kit, and change the gasket.
But im not sure if this is the solution.
* Aprilia RS 125 (2000 modell / 2 Stroke)
* Kawasaki ZXR 400 (1991 / 4 Stroke)
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Re: Problem with the zxr (video)

Post by banner001 »

Overflow usually means the floats are set too high. Set them back to 11mm and check again for overflow.
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: Problem with the zxr (video)

Post by RedexRobB »

banner001 wrote:Overflow usually means the floats are set too high. Set them back to 11mm and check again for overflow.
What he said. Theres a way to do that shown in the manual.
JulianWerner
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Re: Problem with the zxr (video)

Post by JulianWerner »

Thank you guys for replying! :excited

I will try checking the floats next time, and if needed i will try adjusting them :)

I have another questing, do you guys know if i need the " carb heater " ?
It is not connected, and i live in a cold country :smt017
* Aprilia RS 125 (2000 modell / 2 Stroke)
* Kawasaki ZXR 400 (1991 / 4 Stroke)
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Re: Problem with the zxr (video)

Post by ross46 »

Alot of people on here dont use them, some even disconnect them so I wouldn't think so
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Re: Problem with the zxr (video)

Post by RedexRobB »

See how you go without the heater circuit. If its ok then you wont have to spend the time/money sorting it.
JulianWerner
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Re: Problem with the zxr (video)

Post by JulianWerner »

Have a new video..
Its leaking, take a look..

http://www.youtube.com/watch?v=HXUZJaTShm4
* Aprilia RS 125 (2000 modell / 2 Stroke)
* Kawasaki ZXR 400 (1991 / 4 Stroke)
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Re: Problem with the zxr (video)

Post by RedexRobB »

Cant see it myself. Where is it leaking?
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Re: Problem with the zxr (video)

Post by JulianWerner »

Its a bad camera, but about 23 seconds in the video..
From carb 2 & 3 from the bottom, only small drops.
* Aprilia RS 125 (2000 modell / 2 Stroke)
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Re: Problem with the zxr (video)

Post by ross46 »

That looks to be leaking from the drain plugs, have you tried tightening the screws up? If not some dirt might be right in the bottom stopping the plugs from closing properly as that's where the dirt settles, I had to unblock mine with a needle
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Re: Problem with the zxr (new video)

Post by JulianWerner »

aha...

I did not know that, :smt001
Stupid me bought 4 sets with carb repair kit on Ebay -.-

But should i screw them out and let the toad get out ?
Or just screw them thight ?

The time i started the bike , (after the last video) it was a very high sound from the bike..

here is a new clip, hope you know what it is :smt003

http://www.youtube.com/watch?v=hqs8IVHx ... e=youtu.be

Thanks for your help, btw ! :)
* Aprilia RS 125 (2000 modell / 2 Stroke)
* Kawasaki ZXR 400 (1991 / 4 Stroke)
ross46
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Re: Problem with the zxr (new video)

Post by ross46 »

Sounds like something rubbing or catching but not sure what, as for the drain screws, if you tighten them up it should stop them leaking but you might want to strip the carbs and give them a good clean, hopefully someone else will chip in with an idea what that high pitch sound is, just try listening around the engine to see if you can locate the area its coming from and start there, ross
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Re: Problem with the zxr (new video)

Post by banner001 »

@julian, your leak is coming from the fuel drain screws, best bet is to take the carbs off, remove the back of the fuel bowl (the bi with the drain screw, then remove the drain screw and give the inside of the fuel bowl and the drain screw threads a damn good clean.

you can then test them for leaks by tightening the drain screw and filling just the back of the fuel bowl with petrol and check for leaks.

the drain screws can get seized and as you take them out, the non-allen end can get damaged and break.

to me that sound seems like something tapping, have you checked the valve clearances?
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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