missing when i go to 3rd gear

[SFSPECBIKER79]

most of the time like first ride of the day,i start up ,it purs like a kitting .start out up the road and hit 3rd gear blub ,blub .stop the bike let it idle sound great, start off again it might do the blub blub again all ways 3rd gear when it starts. after a mile or so it s ok ride the rest of the day no problem. it is just one cylinder that acts up i dont know which one. its seems to be just during the warning up period. i have new set of plugs. and installed all new gas hoses and routed the one going from octupus to the front connection on the petcock over and around the carb boot . has any one had this happen.or any idea what is happening. as far as i can tell they are no kinks in the gas lines that is the reason i changed the hoses and re routed them, this is real head scratcher .

[TopCatGr58]

Hey Rowdy,

A few more questions. What rpm's are you running/shifting at?
Have you shut off the enrichener/choke before this?

Would be good to take a water squirt bottle with you and test the pipes when it starts to blub, just stop and spritz each one to see which cylinder is acting up.

Have you tested the Octy? Did you replace the vacuum hose that goes to the carb intake boot?

Also, have you tried starting and running it solely on PRIME to see if it does it??
T.C.

[SFSPECBIKER79]

i mostly crank it with choke then when it fires i shut it completly off. warm it uo for about 3 minutes the start out on it, and swap gears somewhere between 3,4 thou. rpm,s it runs great until i change into 3rd but i can stop let it idle 30 seconds maybe it will stsrt missing again or maybe it will run the rest or the day,just great,it usually will strighten out after i stop a couple times, im not sure what the octy is ,and all the vacum lines are hooked up.i have not tried it on prime but i will and see what happens.

[TopCatGr58]

Hey again Rowdy,

You don't really have to wait for it to warm up before you start riding it, BUT you probably should leave the choke ON shortly after you start it and get going, pushing it in to 1/2 choke for a minute, and then the rest of the way in/off. You could just be experiencing cold/lean running until it gets up to warmer operating temps. Folks will say to check your PU coil wires, see the tech tips.

If you like to let it warm up idling, then leave the choke in until the revs start to rise, then push in to 1/2 choke, again wait till revs start to rise, then you should be able to push it all the way in and it should respond okay, but you might want to take it a bit above the 3-4k rpm range before shifting into the next gear, especially when it isn't fully warmed up.

Also you could run it like you normally do and when it starts to stumble pull out the choke to the first stop and see if that clears up the stumble. If so.....then that'll tell you that it wasn't quite warmed up enough, needed more fuel while still a little cold!
T.C.

[SFSPECBIKER79]

topcat, i came in from work this morning and uncovered xs 1100 and cranked it up let it warm up. then took a ride. ran good down the drive , stopped at the end of the drive. took off in 1st gear and ran it up to 7 thou.rpm's held it there for 1/8 mile not a miss,then hit 2nd it fell on its face. i pulled the choke still the same ,turned the petcock levers to prime pushed choke to off. still missing pulled choke still missing pushed choke in. let up on throttle reved up it didnt miss alick slowed down started threw the gears hit 3rd gear started missing. then came to stop sign let idle 30 seconds ,started 1st gear runing great,changed to 2nd running great,hit third started missing i went another 3/4 mile while missing cut the switch off coasted to stop. poured water on pipes, the 2 inside cylinders would not boil water, the two outside ones would. does this ring any bells any one, thanks,rowdyboy

[trbig]

With it being intermittent like it is I am going to say that you'll need to do a pickup coil wire fix. If it's fuel related it would be either 1&2 or 3&4 together. Being the inside pair points to it being electrical.

I can't say why it seems to reveal itself in 3rd more than the others... but this is definately where I'd start looking first.


Tod

[andreashweiss]

parts

Good morning, maybe consider turning on the private message system, anyway, I can supply a perfect 2h7 pickup coil assembly if you need one.,please use PM to contact me, thanx andreas

[TopCatGr58]

Hey Rowdy,

Tod hit it first, yes the PU coil wires are very suspect!!! Different gears and loads put different vacuum stresses and rpm rotations of the timing plate flexing the wires different amounts, just happens to show up for you in 3rd. There is a FINE tech tip on the PU coil wire repair, check it out. OR you can get in touch with Andreass and get a known good set from him, your choice!?
T.C.

[SFSPECBIKER79]

problem solved

hey todd&topcat i pulled the side cover off the pick up coils and giggled the wires the old beast died. i didnt have just one wire broken i had three. i soldered them together with swrink wrap covering them and she is runing like new again.cost was 3 green spots. thanks for the help guys you saved me alot of time and cash, that would be the last thing i would have looked.and you couldnt have seen the problem to start with,THANKS A BUNCH, rowdyboy

[TopCatGr58]

Hey Rowdy,

Don't put away your solder gun yet! Did you read the tech tip??

Solder and shrink wrap isn't good for these wires, due to the constant flexing going on. That's why it's highly suggested that you use test meter lead wire and REPLACE the wires, otherwise, they will continued to flex and break due to their age, and already state of flex/fatigue wear!
T.C.

[SFSPECBIKER79]

tech tips

yea ,this was just a test to see if that was my problem, im going to replace it soon . andreas said he could supply me with a good assembly. it has 40.000 on it. i dont know how long they usaully hold upor whether it happen to just a few . may be the way it was assembled . any experience that anyone has had would appreciated. i would rather have new pickup coils ,but dont know where to find them. right now it runs sweet.xxx

[TopCatGr58]

I can't remember if it was Ken Talbot, or DiverRay that posted about the clamps that secure the wires before they run out of the timing cover is where they tend to get crimped, and causes excessive flexing at those points. SO....doing a search might reveal the thread, but probably hundreds of others, it's a very common problem!

Okay, just glad to hear that yours was just a temp fix for testing purposes!
T.C.