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Discussion Starter · #1 ·
Worked on the bike more. It ran for a while from a cold start. And it ran a good long time. My amateur wrencher (a pro, just not what he does for a living), who's brought many bikes bk to life, gave it his all & is now baffled. The problem: starts up from cold fine, runs for a while too, gets warmed up, then after they start adjusting the idle, carbs or do anything else that may cause it to shut off it won't start bk up. Not even after sitting a few mins or hkg up a batt booster pk.

Any ideas what else to try? I really don't need an electrical issue 'cuz my wrencher won't touch it then & it'll end up costing me $$ I don't have. I just want it to work & run. I've been patient too long :damn: It's time I get to enjoy it.

T-I-A

I'll fess up now too:hang: & I know I'll never hear the end of it either...it sat for 6 yrs, only run twice in that time. Ok...Now ya know!
 

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maybe the carbs need a rebuild....there is so much that could be wrong, are your plugs getting fauled out? have you replaced the plugs, are you getting too much or not enough fuel, is there a fuel shut off valve? is it left on reserve?........
 

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twisty said:
Yeah the is list in my head a mile long of what it could be.
:iagree: sometimes it can be the dumbest thing that could be wrong, its like when you're looking for something and it right in front of your face the whole time. Then you just wanna :bslap: yourself.
 

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Discussion Starter · #5 ·
SVupON1 said:
maybe the carbs need a rebuild....there is so much that could be wrong, are your plugs getting fauled out? have you replaced the plugs, are you getting too much or not enough fuel, is there a fuel shut off valve? is it left on reserve?........
Carbs were rebuilt, then my bud (not wrencher) bent butterfly valve. Bought "new" carbs. Came from a running bike. Wrencher put on new diaphragm 'cuz it was torn & he also cleaned 'em thoroughly. Brand new plugs installed. Prev. ones were horrible. Firing fine. Fuel has been from auxiliary hanging above bike (91oct) & not getting too much or too little. Compression is good. Temp is on target--not overheating. Did forget to mention when it sat, it was always inside w/ 1 full yr. spent in my liv. room! :lols: Yes, that's what I said. Any other ideas?
 

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:scratch: hmm I think we need larryg or the guys from speedwerks to help out here, there is just so many things that it could be.

It sat in your living room! I wish I could do that, I'd sit on it all day long when i'm not out riding. :lol:
 

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Discussion Starter · #7 ·
SVupON1 said:
:scratch: hmm I think we need larryg or the guys from speedwerks to help out here, there is just so many things that it could be.

It sat in your living room! I wish I could do that, I'd sit on it all day long when i'm not out riding. :lol:
U have a pt. I hope Speedwerks or larryg might have some suggestions of what I need to lk for, or my wrencher. :confused:
 

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BabyNinja said:
U have a pt. I hope Speedwerks or larryg might have some suggestions of what I need to lk for, or my wrencher. :confused:
Do what I did. send them a (PM) private message explaining what is going on and what you have tried. Speedwerks is great they got back to me within an hour tuesday morning. larryg is great also it took him a little longer to reply because he has a shop to run during the day so he is only on at night, but he will reply. Both of these guys are great to us here on the forum with technical issues. :dthumb:
 

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Sorry guys...I haven't replied because I am a little lost on the story. Does it run for a short while then quit each time (how do you get it started again) or did it run once for a while then quit and hasn't run since. No to mention, I am having a tough time following your descritption of exactly what work has been done and why.

As it has been said before...diagnosing over the internet can be difficult but I'll do what I can to help.

Larry
 

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Discussion Starter · #10 ·
larryg said:
...Does it run for a short while then quit each time (how do you get it started again) or did it run once for a while then quit and hasn't run since. No to mention, I am having a tough time following your descritption of exactly what work has been done and why.

As it has been said before...diagnosing over the internet can be difficult but I'll do what I can to help.

Larry

The orig. plugs were fouled, so they were replaced before the salvage carbs were put on & btw the 2x we had the orig set on b4 the damage was done to 'em. The only reason for the 2nd set of carbs is 'cuz my friend bent one of the butterfly valves or I'd still be using the originals. When my friend's cowkr started wrenching on it, he thought maybe the rings had seized, so he took out the plugs & poured Marvel's Mystery oil in the openings to free 'em up. It sat for it to work its way thru, then the bike either peed, puked or smoked (exhaust) it out, lol. It would turn over after a cpl times trying & run for a long time, 20ish minutes, give or take, be completely warmed up... sometimes one of 'em would adjust the choke & it'd start to idle down to pt of wanting to stop & when it did shut off, it wouldn't turn bk over.
The last time the wrencher noticed the tank was rusted completely on the inside. Took it off. I took it home, after we'd drained it of all the gas possible, hosed it out, threw in 2 one-ft lengths of galv chain & shook it, drained it, filled it up, shook & drained again repeatedly. Took the petcock off prior & cleaned it up too being careful abt the diaphragm. I worked on the tank the 2nd day for 6 hours straight & 4 hrs the 3rd day before I used the last bottle of alcohol to evap. as much of the water as poss. Chains were out & I left it open, but covered all openings w/ breathable fabric to keep out any guests while it dried. We've now put on an in-line fuel filter. Still using aux tank till we fig out what's wrong.
This last time it ran for the same amt of time approx. & the wrencher was adj the sync on the carbs & my bud was messing w/ the choke too when it shut off & wouldn't start bk up. From what I know the sync is to be at 2 & he had it at 1 7/8. That's all I can think of right now, but if I remember any more tidbits I'll post an update.

Thanks for giving it a shot
 

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Only one thing to consider?

1. Is it a Yamaha?

a. Yes? Then fix it damnit.
b. No? Sell it or scrap it for junk metal and buy a Yamaha

Seeing as it is not running I would guess it is a Kawasaki - hey there is a thread to post your pic since you won't be riding since it isn't running - might as well p/w!
 

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Discussion Starter · #12 ·
I might've lost my patience with it, but I don't give up that easily. I'm not gonna sell it 'til after I've ridden it for a while, but when I do I'll prolly get an EX500 or ZX-6 or GS500E/F.


As for posting a pic of my kawi, I mentioned in another thread that I don't have any pix here w/ me. If I do have any, they're 1000mi away. I'm not taking any while it's in the shop. Once it's bk together, I will then take some.

Do u give GM such a hard time abt having a Kawi too even tho his runs?
Ever try to convince him to get a Yam?
 

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Yeah it runs..... and really good right now...
 

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OK, I'm really trying to follow your shorthand here...it sounds to me like you are doing things in the wrong order. Syncronizing the carbs is useless if you can't get it to idle properly. Even setting the sync visually will get you close enough to get it running. Once you are in the position to sync the carbs, the number on the scale isn't nearly as important as getting the two columns to match. If you have low vacuum, it may be time to do a compression test as that will cause weird running conditions as well.

It sounds like you are dealing with a combination of carburetion and possibly electrical issues. Unfortunately, I don't have a clue what has been done with the carbs but if I were working on the bike, that's where I would start. Get everything clean and set to original specifications. Also check for any air leaks between the carbs and cylinder head. If the rubber intake boots are cracked or torn or you have a disconenected vacuum hose, it won't run right.

As far as electrical goes...when it dies and won't restart, does the motor still crank over and does it still have spark?

One other thing...is it a California model? CA models have a charcoal canister as part of the evaporative emissions system. If the bike is dropped on it's side, fuel can fill the canister and the bike will run like crap if it will run at all. Just another thought.

And one final thought...if you have tight valves, as the bike warms up the clearance will close up to the point one or more of the valves doesn't close all of the way. when this happens, you loose compression and the bike won't run. This will also cause it to be hard to restart until the motor has completely cooled. Just another thought.

HTH,
Larry
 

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Discussion Starter · #15 ·
Ok, guessing I may have lost a large chunk of my credibility here being honest abt my sit. :scratch: Just 'cuz I've not learned to ride on my own until recently having been 2up always doesn't meant I've not been an enthusiast for years! Still wondering what Speedwerks has to say on the subject. Tx Larry, btw. I'm taking in all the info I can get to attempt to resolve this problem. My bud is under the impression it may be the pickups with it happening only after it's warmed up.
 
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