Can't start bike after rebuilding carbs.

haplo_84

haplo_84

Been Around the Block
Okay so i have an 81 kz1000 and i just rebuilt the bs34's that were on it. well today i installed them on the bike reconnected the vacuum tubes, fule line and throttle cables. I've made sure that there was fuel in the float bowls and tried to get the bike to start. Got nothing well except that the starter worked. I figured even if the idle screws were even a bit rich it would still start but what am i missing here. Sorry this is my first expience dealing with carbs so i'm learning. From my understanding of the crabs it has to do with something like the pilot circuit.
 
Assuming the choke is shut, the carbs have been synced, and the gas tank is hooked up with the petcock open?
 
tried with the choke open and shut, petcock was open fuel in the bowls. Didn't sync the carbs though. How do i go about that?
 
I don't know how i could possibly put anything inside the carbs backwards, the pilot jet, pilot air screw, main jets, float and float needle all go in only in one direction. When i took it apart i also made sure to clean each part and remove all varish from each part along with ensuring that the passages would all flow by spraying carb cleaner through them. Took the diagphrams out and cleaned the needle and ensure that there were no tears. The only thing i can think of it that the caps that i put back into the cover for the pilot jets are causing the problem. No body carried them and everyone i ordered them from sent me something different than i took out, so i went to lowes and got some 1/4 rod and made my own. but there is a ledge inside so i can't see as to how that would cause problems.
 
idk, if the pilot air screw were adjusted to far out would that prevent it from running?
 
I was right there with you and now I'm at "will only run with choke." So unfortunately I won't be a great help, looking for some answers.

There should be a rubber plug over the pilot jet. and a metal plug over the air jet screw. Typically a 1 1/2 turn is the starting point with at air jet screw but it depends on your air jet.
Did you take out the emulsion tube and clean out the holes in that as well? A single strand of wire from a steel brush is great for getting crap out of the holes.

Another potential is air leaks around the boots. I'm sure you've checked all these. It's frustrating as hell to do the work and nothing happens.
 
Then that might be it, when i first took them out, they were adjusted to 3 turns out so i set them back to that, but if the pilot screws were so crudded up that they needed it to be turned out that far and the pilot jets clogging at the time it might have needed it to be that far out. I guess tomorrow i'll turn it down to 1-1/2 and see what happens.

Yeah thats what everyone says but mine had a metal cap with a rubber o-ring on it. I just took the rod cut it to size and put a groove in it for the o-ring. Looked and seemed to work just like original. then again you never know.
 
as for the boots i'll have to look into that. but the boots were still fairly flexible. Hmmm, just another thing to inspect a bit more closely tomorrow. :/
 
On most CV carbs, the mixture screw is mounted on the engine side and not on the filter side. If yours are like that then more turns out means more fuel. The other way round to regular slide carbs.

So three turns may have been enough to flood it. Pul a plug or two and see if they are wet or dry.

There's no way you managed to remove an electrical connection when you were working on teh carbs by any chance? Check for a spark while those plugs are out just to be sure.
 
Thanks for the help guys, I feel like a real idiot right now. I went ahead and put the idle air screws down to 1 1/2 turns. That still didn't work, so i decided to the check the intake boots real quick and honestly feel kinda dumb. I had to take the carbs off yesterday to reattach the fuel line connection and when i put the carbs back on, well guess what i forgot to do. But yep yep, got it to fire off. I think the idel is a lil high at 6k but i can adjust that.
 
Alrighty, i have the idel on the carbs set up now. it idels around a thousand now anything below that the bike seems to stumble a bit. I think the spark plugs could use replacing and that'll help. But low and behold i feel a bit over whelmed now. Now that the bike is running it has to stay powered by the battery so i guess a stator is the next thing to go for. :(
 
oh trust me, i am for the stator. I'm on a very limited budget for both money and time. I work 2 jobs and go to school full time. Imma penny pincher when it comes down to it.
 
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