ZX-2R (250c) wont run properly

[MickLC]

Not if your float valves are OK, and it will help sort out where the problem might be.

[Slow and wobbly]

Mucking around huh?
I have built one from these plans;
http://www.geek24.com/g/how-to-build-yo ... -capacitor" target="_blank
I often jaunt backwards in time to rectify all my wrongs - Next trip I plan on picking up a sports almanac!

[Shifty]

Interestingly, I just bought one and it has the *exact* same problem. Won't idle without the choke, stalls as soon as you turn it off or if you reduce it then touch the throttle. Seems like a fuel issue? Haven't look at it yet.

[indo_bumm]

yeahh .. Im guessing that the hose that guess to my vaccum valve is either not sitting properly(my noobness from not installing hoses properly when putting tank back on last sunday ) or damaged... but I'm preety sure it's just a fuel issue... fingers crossed.. Im taking my tank off on sunday... so we will see then

[indo_bumm]

Hey guys.. sorry didn't get back earlier... but yeah my zxr250 problem ended up just a disconnected vaccum hose !!!. .. haha stoopid me... when I was putting the tank back on I didnt install it properly and I guess it fell off... .... Noob !!!

Cheers

[timmyrocks]

hey mate i just totally rebuilt my zxr250c and turned it into a race bike i brought an engine and carbys fitted them n tried startin it n got th same problem as u have bike will only run on choke and as soon as u hit the throttle it sound like theres no fuel only air n kills the engine,,,,, correct?
this is how i found the problem and help some people gave me
is the air box and air filter on
if so drain fuel bowls to see if fuel is in every one of these these screws are on the bottom of the carby bowls
if all 4 bowls have fuel in them then your pilot jets are blocked remove carbys remove bowls and give a good clean if u have any other questions just ask peace

[timmyrocks]

hey mate i just totally rebuilt my zxr250c and turned it into a race bike i brought an engine and carbys fitted them n tried startin it n got th same problem as u have bike will only run on choke and as soon as u hit the throttle it sound like theres no fuel only air n kills the engine,,,,, correct?
this is how i found the problem and help some people gave me
is the air box and air filter on
if so drain fuel bowls to see if fuel is in every one of these these screws are on the bottom of the carby bowls
if all 4 bowls have fuel in them then your pilot jets are blocked remove carbys remove bowls and give a good clean if u have any other questions just ask peace

[mattyv74]

Heys guys, you still having probs with idling? I just bought my first zx2 this week end. It was a pile of parts in a box. When i got it all together it wouldn't idle and blew shit loads of smoke.
There are four hoses under the tank that you need to get right if it won't idle.

One line comes off the front of the carbs, over the airbox and plugs into the back/top of the airbox.
There is the small vacume line that runs to the tap. disconnect it from the tap and try blowing ack down it to check its clear. If it not, clean it.
Another large hose comes up from behind/under carbies. This is the fuel line, and goes on the large out let of the tank.
Finally there is the breather hose that runs down and out the bottom of the fairing.
If all this is clear, then remover the tap from the tank and clear it out. The modern unleaded fuels are natorious for glogging the taps up when left sitting for a bit.

As for the smoke, it was as simple as making sure the crank case vent on top of the gear box sealed properly with rubber boot on the bottom of the airbox. It it's not, it will either suck oil out of the rocker cover breather or build up crank case perasure and hinder oil return to the sump and then get into inlet that way. Haven't figured out exactly which yet. But lots of smoke.

[brendanzxr]

hi i have a zxr250 too 91 model it has never given me any problems its running great all the time same about your zxr250 hope u fix it

[mattyv74]

hi i have a zxr250 too 91 model it has never given me any problems its running great all the time same about your zxr250 hope u fix it

And your point is? Or do you just enjoy rubbing peoples noses in it?

[brendanzxr]

sorry about the bad remark didn't mean it in that way forgive me

[mattyv74]

sorry about the bad remark didn't mean it in that way forgive me

Jokes mate.... All good.
I'll bag out anyone I can.
cheers

[AnonMS Yellow]

mine used to do that when it was cold, it would just turn straight off. I did do one thing once, start it rolling down on a hill so it is in momentum and in second gear and it didn't turn off as I rev'd it, then it worked just like normal, I think it just needed to get petrol running through it.

[h8_rice]

HEY ALL - its me v8-vh... for some reason my "username could not be found" so I just made another one.
Well I have since got the 250 on the road and have been riding the past few weekends.
I will re intoduce myself I guess in the main forums... somewhere... but so you all know I got everything sorted, got the carbs rebuilt and balanced runs sweet as.. Just need the fairing

better late than never.. its been AGES since I picked the bike up. I will post pics in a new thread.