jimmy-newzxr wrote:Well i bought the bike on ebay the guy said it runs fine, and when he dropped it off it did. To be honest maybe my mistake for not having a propper check over when first bought. But for the money i dont think i can complain too much yet!
Right spent all day on the bike, stripped back the carbs again cleaned the insides with carb clener. also soaked the air filter and dried. Stuck it all back. So i started the bike and when it was cold the idle was low, so i increased it with the adjuster to about 1500, after ten mins it started picking up again, so i knocked it down again (which i guess in effect is kinda like the choke) as mines snapped instead of using that i used the idle control adjuster. So engines running fine not lumpy quite smooth and if you leave for a min and rev it with the throttle will fly up to 8000 no bother if you try again it gets to about 3-4000 and stutters under idle for a couple of secs then goes back up....
sometimes though it stalls. Now i kinda get the impression it might be fuel related, when it stutters the carbs sound like they flutter almost and then the engine dies off, there is a guy down the road who says he will have a look but to be honest would like to try myself as that was the whole piont of buying the bike. If it is the rubber seats as you mentioned earlier can i get a set of these andf replace?? is that a massive job, i know i will have to get the carbs set up by a prof. but is there anything else i can check??
Another stupid qiestion but my expansion tank is bone dry but how i do know how much coolant is in the radiator??
Thanks again for your help guys
Cheers
OK I'm not being cheeky when I say this BUT
You say it was running fine when it was "dropped off" I assume then that the bike was ridden to your location by he previous owner..............it got there ok and was as you have said "fine".
All your problems seem to have occured after you gave it a "once over"
Therefore I must conclude that the problem you now have stems from something you have done..............?
Oh and this choke that is "snapped off" could it be that the choke is snapped off with the choke on ?
Using the idle adjuster as a choke for cold starting is silly because it won't do anything all it does is open the butterfly throttle valve a little you could achieve the same result just by turning the twistgrip.
Recent via this forum I help a guy with his ZXR............all he did was try and change his clutch cable but because he made a mistake he ended up with a broken camchain tensoner and a very noisy engine. He had no idea that he had made that mistake as was wanting to buy a new engine.......................his engine is fine now
So please double check and make sure you have EVERYTHING as it should be before you start playing around with jetting and pilot screws...................
I've just re read your posting you say you soaked the air filter...........what did you soak it in........? I've seen bikes run very rich ( your problem ?) because the air filter could not pass air due to being soaked in oil that was too heavy/thick.
Is theairfilter not a paper element in which case it does not need to be soaked in anything...........
My experience of ZXR400s is that they do not like having the air filter /air box being changed and it takes a dyno to set them up right after any modifications
You can run the fuel pump just by connecting it to a 12v source
