TO JET or DYNOJET... that is the question...

[Rashad]

OK.. well can someone please try the choke thing and let me know? thanks!

Also, what else could this problem be???

[pantablo]

my choke is pretty consistent-pull choke on, start bike, revs to 3K then almost immediately to 5K, occasionally a little higher. lave it there for a minute, maybe two then choke comes off and idles fine, with occasional easing the clutch out at first.

Stock 01 bike, in CA so it never gets really cold but bike is parked outside overnight, covered.

Most recently it will 'dance' a little around 3-4K but won't get to 5K anymore-probably because it's time to switch the air filter and plugs.

[Rashad]

Thanks pablo..Well.. what i was saying, is i think my choke is STUCK open.. so if someone can put the choke on and 'try' to rev above 5-6-7k or wahtever.. to see if the bike will cut out and sputter when choked.. that way i can tell if that may be my problem....

sorry if its confusing..

[The Buddha]

I have been able to rev to redline with the choke...at a stand still...No problem...
Choke and intake leaks and all that affect the bike only at low rpm...at over 5K there is so much fluid flow through there the little added fuel with choke or little added air due to vaccum makes no diff unless you have a good 1/4 inch hole in the manifold that is...The only thing that caps off the revs is a diaphragm that wont lift...Rip...Replace it and see. Also check your diaphragm and let me know.
Cool.
Srinath.

[Rashad]

Srinath...

Ok, i took apart the bike today.. i patched the gas tank leak (again).. and while that was drying i took off the carbs..etc.

But first, i took off the airbox, and ran it to see if i could see if the slides were moving..

They were, and it ran a little funny because it was lean probly.. but they moved fine, and in unison.. and when it hit fuel cutoff sputter mode at 5k or so... it like farted out the carbs, and spat a little gas out too!!

Now, i took off the caps and the diaphrams look good from what i can see.. they actually look brand new. I only took one completely off and out, but it was spotless. I will replace them both for the hell of it when the new ones come in.

OK, so i took off the carbs, and the float covers, and i replaced the stock 122.5 jets with the new 125.7 mains. I went to the hardware store and i swear i live in the most retarded town in the world. They for some reason dont carry any washers under #6 and have NO CLUE who would around here... really pisses me off... So i didnt put the washers on the needles yet.

So... bike seems to run much stronger in general with just the new mains.. i dunno why..lol

Its odd, but the problem seems to be speed sensitive.. it will rev almost to 7 or so sitting still.. But its also throttle sensitive, like the more i give it, the worse chance it has of making it past 5k. Also, when im actually riding, it gets worse and the faster i go it gets worse.. very weird.

So the mains had nothing to do with the problem, as its still there. Srinath im soooo lost. and i need to be riding this thing soon, as my car is gonna get fixed.

could it be ANYTHING Else? Timing? if you can think of anything please please let me know.. im so confused about this..

But keep in mind it always did this.. even with the old motor.. just not as bad.

[Rashad]

OK.. srinath.. anyone.. im about to sell my bike.. PLEASE HELP ME... im seriously at the end of the rope here guys...

YESTERDAY... Me and a friend took off the valve cover, and checked the timing... it was OFF!!!! one pin too many (19)!!!! so i thought ALRIGHT!!!! thats y!!!!!!! We retimed it! We tightened things.. we checked and counted. We tightened the cam bearing caps and checked again. We tighted the tensioner and counted the pins again! We turned the motor over by hand a few times and counted again!!!! Still in time, so i know its right now...

Put it back together, problem still there!!!! Wont rev above 6-7 in nuetral and 5-6k under a load.


TODAY: Took off the carbs.. brought them to the bike guru's house.. we took them apart and targeted the needle jet, because they were stuck and i couldnt get them out that last time. We coaxed them out and sure enough they were COATED!!! this gunky greasy mess was blocking the little tiny holes on the outside of the needle jets.. completely coated them. We cleaned them until you could see light through every little hole. We cleaned the carbs out til they shined.. and used compressed air to blow everything out. They are perfect. Adjusted the floats etc... cleaned pilot air screws and turned them 3 turns.. (its stalling now and wont idle, so i think i need to turn them out more).

SO... in conclusion i started it up and the problem is still there!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! :guns:

Hes coming back over next sat. to check the cam timing again. I am not an iddiot. Neither is my friend. When we took the bike apart the cams were not in time.. when we put it together they were in time. NO noticeable difference in the way the bike ran.. leads me to a few conclusions:

1. the cams are jumping out of time.. which means bad tensioner, but mine is PERFECT and works FINE.

2. the problem is electrical.. IS THIS POSSIBLE??? what would i check?? and is there anything that could actually cause a high rpm only defect!!!

Please guys... im beggin you to help me.. im putting this POS up for sale soon.

[Blueknyt]

Dont let it beat your rash, you have it on the ropes, its playing games with you is all. you beat the hard stuff already just keep knockin down the snags, you will win. dont loose your cool over it, worse case, walk away from it for a week do something else completely.

[Rashad]

Heh.. yeah i know, but man, ive wasted so many hours on fixing stuff that isnt broke.. and i cant find the problem.. weird thing is the old motor did this....

[Rashad]

bumpity...^

[The Buddha]

On electrical issues...The advancer plate could go bad and have the thing work fine when cold but die when hot if the revs drop...Does that even make sense...Well it does...Here is what mine did. If you start it it runs fine...now it will run well for 15 20 mins...ample time to get on the highway and run steady speed...I once rode 40 miles on the highway after the 10 minute ride to the highway. It worked fine till I came to the exit and had to pull the clutch in...at that point it instantly started running on 1 cyl. I went to where I was going stopeed it...an hour later I stra it and it runs fine all the way to my home exit...where it again runs on 1 cyl. Typically black box issues cause misses/non firing at low revs and clean up at high revs. It also misbehaves when hot but is fine when cold. However it does not misbehave at one rpm when under load and another rpm when not under load. Under load and not under load the biggest difference is the correlation between throttle position and revs. At 5K under no load or 5K under load the bike is the same electrically. But for carburetion it is entirely different. 5k is less than 1/4 throttle if you are revving it in neutral, but its about 1/2 throttle in 6th. Carb issues are what you have...I'll send you my spare ones and they are not complete by any means...please put in your carb missing parts and try it. If it works keep it and send me yours...I need to figure this out. I had a friend whose bike reacted great if you open the throttle slow but bucked and lost rpm if you opened it fast...And he had one hole in the slide blocked just like mine. Funny thing is on my 89 both holes are open and it still behaves fine except when you open it very fast.
Cool.
Srinath.

[Rashad]

OK Srinath.. so what did you want to do then? I can send you a pm with my address if you would like. Ah hell i trust everyone on here..

Rashad Frelin
240 Winter St.
Duboistown PA 17702

Srinath, if this works.. you are the man. Hell, even if it doesnt, youve helped a lot as it is. I really appreciate it!

Oh, btw, what did you mean by carb missing parts? My carbs are complete and very clean. The only thing that i need to clean yet is the float needle seat i believe.. we didnt mess with that because they were froze in there and to get them out i might mess up the brass. I was focusing on the emulsion tubes etc.. which control higher rpms.. what exactly do you think it could be?

[Rashad]

OH yeah.. and i tried to start it today, and it wouldnt start at all without some throttle and then to keep it running you have to give it gas..

Ever since we messed with the idle (pilot) screws it wont run at idle.. so i have to do some tuning there too..

[The Buddha]

Well My carbs aren't complete...That's what I meant...the parts that are missing you fill with yours. The overall thery I have is this...The non removeable parts are the problem...cos if it can be removed you'd have taken it off and cleaned it/replaced it. In junkyards you can get a incomplete carb for nothing...Hell I bought 3 incompletes for $30 and made one good set and sent it to Jared...BTW you still having problems with that Jared??? and the other 2 are lying about... So I presumably have a couple of good carb bodies, you should clean them and pull all the parts like jets, floats, needles etc from yours and put them in these. And check it out. If it works keep it. Send me yours and I'll see what turns up.
Cool.
Srinath.
I'll send it out in a day or two...

[The Buddha]

Hey send me shipping money later...Hell keep your carbs too... no sense shipping bad parts just for my pleasure...I have 2 carbs for 2 bikes, dont see why I need a third set...
Cool.
Srinath.

[Rashad]

Hey Srinath.. thanks a lot buddy  Your help in this whole issue has been tremendous... i hope i can repay you someday.

Ill definitely pay shipping, just let me know how much.. and if you want a few bucks for them ill be more than happy to reimburse you.

I wonder though.. isnt it odd that we fixed the timing... and it runs exactly as it did before that?

I mean. it was one tooth off.. (19 pins instead of 18 to be exact.. and in case you can figure exactly what that would do to the motor)... so wouldnt it run better now that its in time?

Is it possible for the timing to continually jump even with a good tensioner??

[Rashad]

bump

[The Buddha]

If the cam chain is skipping teeth...look for that rubber slipper thing up in the valve cover and the the front and back ends of the cylinders in the chain turret and for missing or broken teeth in the sprokets. Those slippers will keep the chain from lifting off the sproket. Also check for wobbles and damaged links in the chain. I'll find and send the carbs in the next day or so. Now where is that 10 page thread...it needs to be revived...
Cool.
Srinath.

[Rashad]

K thanks Srinath! :mrgreen:

Yeah, i hadnt thought of the other parts of the tensioner.. there is NO WAY that thing is skipping teeth.. because the chain is constantly being tensioned... hmmm.. and its in excellent condition... sprockets and teeth.

I guess this IS a carb issue... ill give your carbs a shot. Also.. i fear the tach might be not reading correctly.. is there an easy way to test this? Its definitely not revving right.. but it sounds like its revving higher than 7k... but maybe thats because i have a V&H pipe.. anyone have experience with the pipe and if it sounds higher than it is? Thanks!

[The Buddha]

OK fine you talked me into it...I'll send you a tach also but now I need that back...in case one of my 2 bikes tachs die, so might as well send me your carbs and the tach back...OK Now more crap I need to find...use your speedo like a tach can you...Anyone here try...
Cool.
Srinath.

[KevinC]

I hadn't followed this thread before. Sounds like something electrical to me. My GS is amazingly forgiving on the jetting, with only fairly subtle problems with the jetting off by large amounts. I can't imagine the jetting causing it stop acclerating past 7k.

If the throttle butterflies open all the way, and the slides go up all the way, I'd look for another problem. Could be the ignition box, or perhaps a coil cuts out at higher rpm.

It is running on both cylinders? One pipe isn't cool?