My zzr 250 wont start

ZZR 250, 600, 1100 & 1200

My zzr 250 wont start

Postby Cassie » Sun Feb 16, 2014 7:47 am

Hi,

I own a 2001 zzr 250 that turns but wont fire. The motor was rebuilt 2000ks ago and all hoses replaced, has been running fine since then. Rode it to Gunnedah and back,
last week, than didn't ride it for 2 days. Went to start it to go for a ride, it turned but wont fire. It has half a tank of fuel and new plugs. Still turns but no fire, and now no tacho signal.
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Re: My zzr 250 wont start

Postby Zzr25090 » Tue Sep 27, 2016 12:52 pm

Hi i recently purchased a zzr 250 1990 model with only 24k on the clock.
After picking it up got about 7kms away and it just died, my battery was brand new as i seen it and the old battery at the guys house, left it sitting for about 15 mins and with out the lights on got it back to his house for pick up later in a trailer, brought another as a parts bike for $250 with almost new tyres, went and picked them both up, put a volt meter on it and wasnt getting charge.so swaped the voltage regulator rectifier and was fine then. That problem solved. :roll:
Now i can hear a slight knocking noise when its cold noticed when pulling clutch it stops the clutch plates where shot so changed them this did not fix the knocking as its the clutch basket making the noise i have been completely reinsured that this is a normal thing for the zzr250 to do and so fare cant find anyone saying theres failed, but i think it would make the clutch wear faster?
Pressing on not worried about that anymore and knowing i can swap the other over at some point after i get a decent impact wrench,
I was riding and suddenly lost power like runing out of fuel not long after i just filled up, its was cold and raining.
And i was doing abit of compression braking down long steep winding road till finerly at the bottom gain speed to the conditions then after about 3 ks just struggling to run took it straight to my bike block he changed fuel filter checked the feul cleaned carbies thought i wonder if he just emptied the bowls.
Picked it up and while it wasnt struggling to run it seemed to have nothing and him riding much bigger faster bikes probly was like yeah thats it. But i knew it wasnt right.
I got it back and noticed a feul leak which started me on my direction,
Replaced the tap bolt neapren washer and just tightened the screews around the tap, thats when i noticed when they took the tank off they were just pushing on and off the vacume hose and it wasnt real tight so replaced the cable tie put it back together and boom fired up and sounded fantaztic its revs were fast and responsive.
Took it for a long ride what a difference 2 and half hours beautiful riding. Next day raining and cold i set for the ride home got about 30ks away problem back struggling for power, pull in to fill up on fuel started fine and was fine for another 30ks the the same thing loses power and really playing with it can keep it going till i pull over rev it up sounds ok take off so on and so on. Im unsure where to go next.
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Re: My zzr 250 wont start

Postby Zzr25090 » Tue Sep 27, 2016 5:31 pm

My next step i guess is check the other side of the vacume hose for perishes and that the hose is sucure on the other side then i will test the diaphram by sucking on the pipe and seeing it will stay vacumed to my tougne if doing this be careful for fuel in your mouth.after doing these things hopefully someone has posted some more ideas for me to check. If this hasnt fixed the problem
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Re: My zzr 250 wont start

Postby Mister_T » Tue Sep 27, 2016 6:24 pm

Some kind of restriction of the fuel tank vent system can cause the sort of problems you describe.

I once had a problem on a KLR600 out on the highway near Tamworth in heavy rain. It seems the cold and wet blocked the simplistic tank vent. I had to ride with one hand on the throttle and one hand on the fuel cap (those are not a locking cap, luckily). When the engine cut out I would open the cap to vent it and let fuel back into the carby, then close it up again to keep the rain out. I had to ride like this until the weather dried and the bike ran normally.

I am not familiar with ZZR250 tank venting. You could see if venting is your problem by leaving a spare key in the cap and go for a ride. When the bike plays up, open the cap and see if it makes a difference. It probably best not to try this with a full tank.
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Re: My zzr 250 wont start

Postby Zzr25090 » Tue Sep 27, 2016 6:35 pm

Im also wondering if just the riding in the rain and cold could be making this happen but i cant imagine how unless its sucking water in from some where in the vacume or fuel lines? Is there anyone who can help me with any info or checks i should do would be greatly appreciated.
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Re: My zzr 250 wont start

Postby Zzr25090 » Tue Sep 27, 2016 6:50 pm

Oh good call! :kuda: i didnt think of that but have heard of that before im off to check out a diegram if i can find one of the vent hole on the tank of the zzr250 thanks
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Re: My zzr 250 wont start

Postby bonester » Tue Sep 27, 2016 7:44 pm

When my ZZR250 wouldn't start recently I found that it was out of fuel....eventually. :roll:
2 X ZRX1200R 4 X ER6N, GT550, 1988 ZX-10, 4 X GPZ250R, 4 X GPZ900R and GPZ750R :) Yeah I like Kawasakis.
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Re: My zzr 250 wont start

Postby Zzr25090 » Tue Sep 27, 2016 10:16 pm

I think your on the money with that there is a from what i can gather a join between the breather and in the fuel lid water drain and maybe as water drains through it would make it hard to breath i really think another ride on a good day and then a rainy day will tell i geuss,
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Re: My zzr 250 wont start

Postby Zzr25090 » Wed Sep 28, 2016 10:55 am

Getting back to the clutch basket making the knocking noise i put that down to the bike not being warmed up properly when first putting it in gear, as ive found that this bike really clunks into first the very first time putting it in to gear ive even had it lunge forward and stall i adjusted the clutch but it will always do it unless the bike is warm and you pump the clutch a few times.
But think that most of its starts have been cold causing the hit to the clutch basket causing it to wear and give a slight knocking noise when cold, does any one have any theries or facts on this matter?
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Re: My zzr 250 wont start

Postby Zzr25090 » Wed Sep 28, 2016 10:58 am

As for the tank breather i dont know how to get to it they seem to run through the tank? Any help appreciated
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Re: My zzr 250 wont start

Postby Zzr25090 » Wed Sep 28, 2016 10:59 am

Its a 1990 if that matters but think there all the same arnt they?
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Re: My zzr 250 wont start

Postby Zzr25090 » Wed Sep 28, 2016 11:01 am

I dont even know if im posting in the right place :shock:
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Re: My zzr 250 wont start

Postby Cwidova » Wed Sep 28, 2016 11:35 am

The clutch baskets on them always chatter. When I had one I rang a few dealers and they said it's normal on them and every one I have seen has done it.
If you are that concerned you can take the side cover off and have a look at the basket fingers and see if they are damaged, but if the clutch works as it should (not notchy/grabby or very sudden) then I wouldn't be too concerned about it

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Re: My zzr 250 wont start

Postby Zzr25090 » Wed Sep 28, 2016 3:21 pm

Yeah cool thanks for that,
You wouldnt happen to know the best way for me to clear or check the breather for the tank, as i see that the only hose or opening other then the key hole is just the water drain or fuel spill around the cap and cant see what it does between the drain hole and the hose spout, im confused i need to sit down. Where is the tank breather on a zzr250
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Re: My zzr 250 wont start

Postby Cwidova » Wed Sep 28, 2016 3:27 pm

From memory the tank breather outlet is at the rear of the tank, it has a hose that can be pinched easily if you are not careful putting it on. All I can suggest is lightly blowing compressed air up through that hose/fitting with the cap open and seeing if it is clear.
Another thing to check is the fuel tap , its vacuum operated and the hoses can perish as well as the diaphragm in the tap itself, and the hoses can deteriate and block internally....
Also, check to see if the tap screens are clean in the tank. They are attached to the tap, but easy enough to take out and have a look with the tank off...
Other than that carbs may need a clean out.
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