Need some help

[ninjabrewer]

Bike is not idling like it supposed to, Had the valves checked and a new front tire installed, mechanic said it was running rough after it was reassembled, he worked on it awhile, then I got it back. Did find a hose that comes from between the carbs and goes.......where.

where does this hose that the screwdriver is pointing to go???





TIA

NB

[ninjabrewer]

Also, it takes full choke to start it, if it will start. When it catches, it will run really rough, try to give it some throttle and it will die. After a a few min, the rpms catch and it revs up to over 4K. Slack off the choke, even a very small amount and the rpms drop and she dies. The hose in question wasn't plugged into anything that I could find. But, if I put my finger over it, it dies. Replaced the plugs, and tightened one of the boots holding the carb on, and smoothed out a little, but it is still not rideable.

thanks

nb

[kkim]

hose is carb vent line... doesn't connect to anything.

http://www.ninjette.org/forums/showthread.php?t=65198

[ninjabrewer]

Thanks Kelly. I take it from the link I need to clean the carbs. But, will it go from running like a top to hardly running at all over night? Already thought about cleaning the carbs, but wanted to check and see if it might something a little simpler, since it was in the shop. Not going to go into why she is not going back to the same shop.

thanks

nb

[kkim]

how long has it been sitting w/o use?

[ninjabrewer]

Originally Posted by kkim

how long has it been sitting w/o use?

It went from about mid october, when the tank and carbs were drained for shipping, got here around mid december, gassed it up and rode it to the shop around mid march, bike ran perfect. Shop said that it was running rough on the test ride and said they would work on it some more, after about a month, most of which I was out of town, I decided to get it and try to figure it out, since they were not having any luck, (and found out they were not a Kawasaki motorcycle shop, just 4 wheelers) plus after getting the fairings off I found some things that I didn't like and more than likely won't be going back to that shop.

nb

[kkim]

yep, you can start to have problems with the gas clogging up the carb jets in as little as a month. do they have ethanol in the gas there like they do in Hawaii?

refill w/ fresh fuel, add some seafoam and see if it helps.

[ninjabrewer]

Kelly, pulled the carbs, cleaned like in the DIY link, no change. As for the ethanol, yes, most of the gas stations I have seen have it.

nb

[rockNroll]

Sounds like it could be fuel starvation. You gettin fuel to the carbs ok?

[ninjabrewer]

should be, after I reinstalled the carbs, turned the knob to prime, and in a few minutes started it up. I 've called it quits for the night, but I was trying to get running, and it started sounding right, but then it went back to sounding and acting like it was firing on one cylinder.

nb

[kkim]

pull the plugs and check them. have they been changed recently? look at the old plugs and see if there is a noticeable difference between them.

while you have them out, check that there's a nice healthy spark from each.

how's the bike run with the choke on?

[ninjabrewer]

Plugs are new, both have a healthly spark, although one was a little wet. After it warms up, the bike runs pretty good with full choke, although about 4K, whereas it did run around 3K before.

[kkim]

if I had to guess, I'd say your pilot circuits are still clogged. when you cleaned it out, did you also clean out the air passages the pilot jets screw into with some compressed air?

[ninjabrewer]

hmm, no, didn't think about that. Anything that I have take off after I pull the jets, before I blow compressed air through there?

nb

[kkim]

no, just try to blow the passages out from the opposite direction that fuel flows through them. if compressed air doesn't do the job, perhaps use some carb cleaner in a can and use the small plastic straw aimed into the exit hole to back flush whatever may be clogged in there.

there was one case where the member separated the carbs and soaked them in those carb cleaning buckets with great results, but that's kinda extreme and you really need to be aware of not soaking rubber parts in that carb cleaner bucket.

[ninjabrewer]

hmm, ok, I wil have to get some carb cleaner tomorrow after work and try that.

I'll let you know how it comes out.

Thanks

nb

[ninjabrewer]

got some carb cleaner, removed the carbs one more time, and cleaned them with carb cleaner, sprayed out the jets and the like. No change. But I have figured out that it is only firing on the left cylinder, right one doesn't seem to be firing at all.

suggestions???

nb

[kkim]

have you tried switching the plugs around to see if the problem follows the plugs?

[ninjabrewer]

Originally Posted by kkim

have you tried switching the plugs around to see if the problem follows the plugs?

switching the plugs or the ignition coils? the plugs are brand new

nb

[kkim]

switch the plugs left and right. if the problem switches to the other side, you have a bad plug. if nothing changes, something is wrong on the bike side.

only thing I see that connects to the plugs are the coils and the CDI. make sure the connectors are clean and "making" properly.

http://www.ninjette.org/forums/showthread.php?t=35886

[DaBlue1]

Originally Posted by ninjabrewer

Plugs are new, both have a healthly spark, although one was a little wet. After it warms up, the bike runs pretty good with full choke, although about 4K, whereas it did run around 3K before.

Will the bike idle after it is warm. If not, have you adjusted the idle?

[DaBlue1]

Originally Posted by ninjabrewer

Plugs are new, both have a healthly spark, although one was a little wet. After it warms up, the bike runs pretty good with full choke, although about 4K, whereas it did run around 3K before.

Will the bike idle after it is warm. If not, have you adjusted the idle?

[ninjabrewer]

Originally Posted by kkim

switch the plugs left and right. if the problem switches to the other side, you have a bad plug. if nothing changes, something is wrong on the bike side.

only thing I see that connects to the plugs are the coils and the CDI. make sure the connectors are clean and "making" properly.

http://www.ninjette.org/forums/showthread.php?t=35886

I'll check that tomorrow, I'm pretty sure the plugs have a good connection., but I will switch them tomorrow

Originally Posted by DaBlue1

Will the bike idle after it is warm. If not, have you adjusted the idle?

Nope, whenever I take off the choke, she dies, even after it warms up.

thanks

nb

[almost40]

Plug wire?? Spray a fine mist of water on and near the wires in a low light condition when the bike is running. Look for the spark.

[DaBlue1]

Try turning the idle adjustment screw. See if that affects your idle problem.

[money]

Originally Posted by ninjabrewer

Not going to go into why she is not going back to the same shop.

If you get a chance I wouldn't mind hearing more about it. I live in Hsv as well so it'd be good to know who to avoid.

[ninjabrewer]

Originally Posted by ninjabrewer

I'll check that tomorrow, I'm pretty sure the plugs have a good connection., but I will switch them tomorrow

Ok, switched the plugs, no change. But, while I was tinkering with it tonight, I have noticed something else. Tonight , the rt cylinder will take a notion to run. When it is not firing, I can hear and feel, on the carb boot that connects it to the air box, a popping noise, can also feel it on the bottom of the carbs, rather hard pop. I also have seen a slight puff of smoke coming from the cylinder side of the carb, (which tells me I have a loose strap on that carb) everytime it pops.

suggestions??

nb

[kkim]

meaning... when you switched plugs, you're still not firing/sparking on the same cylinder?

loose strap... as in loose carb clamp? if it's loose, tighten it up. still doesn't account for one spark plug not firing.

[ninjabrewer]

Originally Posted by kkim

meaning... when you switched plugs, you're still not firing/sparking on the same cylinder?

Nope, still not firing on the same cylinder. Too be honest, I am not sure if it is not firing because of spark or something else. I have already checked to make sure we got a spark on that plug and I do,( oh boy do I) Anything else that would make a cylinder not fire right off? Tonight, on occasion, she has been running like she supposed to for a few minutes.

Originally Posted by kkim

loose strap... as in loose carb clamp? if it's loose, tighten it up. still doesn't account for one spark plug not firing.

Working on that now.

nb

[kkim]

if you've checked both plugs and they are both good, it sounds like something electrical. But, I'm still not clear... are you getting spark at both cylinders?

[ninjabrewer]

Originally Posted by kkim

if you've checked both plugs and they are both good, it sounds like something electrical. But, I'm still not clear... are you getting spark at both cylinders?

yes

[kkim]

then scratch the electrical comment. I'd be looking for loose clamps or loose vacuum hoses.

[ninjabrewer]

hmm, ok, start looking for that tomorrow, I sipping rum now.

thanks Kelly

nb

[kkim]

[KJohnson21]

Since he's getting good spark at both plugs, could the bike be running on only one carb for some reason?

Chris - has it had this problem since the valve adjustment?