have video need help

[kevxs]

i've been having problems since i last took my carbs off, didn't adjust much so i'm afraid to do so now as it was running really well before

this thread shows what i did

http://www.xs11.com/forum/showthread.php?t=29221

i've got it back together and its running poorly, wont idle without choke and alot of popping from the right tailpipe, hopefully this video is helpful.

http://www.youtube.com/watch?v=BRHHAwKZit0


i turned out the mixture screws, which i guess i can continue to do but i hadn't adjusted it and it was running well before so i dont know why that would change just from remove the rack and putting it back on

i haven't snyc'd so maybe that is my problem, i didn't break the rack apart but who knows. all the floats are set to 25mm, any other ideas?

[zejaybee]

Not an expert but...

Here's my thought after completely rebuilding my carbs. When you say you turned out the mixture screw are you talking about the idle mixture screw. Those are preset to 1 1/4 turns out and should be left at that setting. As it will quickly show, my expertise is limited although it seems like in the last 3 months I've had enough experience to qualify as a tech on the '79 XS1100SF. Now I'm dealing with electrical issues... maybe my TCI box. From viewing/listening to your video, it leaves me wondering, have you pulled the plugs to check them for coloration?

[MindWebs]

yes you need to sync the carbs..

these bikes are VERY touchy, if you even think about pulling the carbs..

they need re-syncing

pain.... but worth it.

good luck
Webs

[natemoen]

did you bench sync it before you put them back on? Its way easier to sync them on the bike if you did a reasonable bench sync first. But either way you need to sync them before you try anything else.

Set the idle screws to about 1 1/4 and then sync the bike. adjust one of the idle screws to where you think its running good and then sync again adjust another idle screw then sync again and repeat 2 more times till you have all the idle screws set to where you think its good.

and dont worry about messing with the idle screws. yes they are preset at the factory to about 1 1/4 and then they put those fancy little plastic caps on them but they just get ripped off right away so you can actually tune the bike.

Sync, then come back and tell us what is going on. Good luck!

[Larrym]

Coughing up hairballs??

You're doing everything right: searching the forum before before putting forth your situation, putting in pics and videos to bring us as close to "being there" with you, following the sagely advice already given, etc.

My 2 cents:

Proper running is dependent upon the carbs and the spark doing exactly what they're s'posed to do each and very time. If the spark don't happen or is intermittent due to a corroded connection in one of the high tension plug wires (Or any other number of causes...) then "pop....pop...poppitty....pop-pop" as that cylinder tries to clear it's throat of the unburned fuel. Or running on three cylinders, being sluggish, and then taking off like a rocket when it finally bangs on all 4 like it's meant to.

Don't forget to verify that reliable spark is present. If you haven't done it already, then I'd suggest that you do the secondary ignition Ohms tests on the spark plug wires/caps. (Then just as a "gotta be sure" I'd unscrew the spark plug caps from the ends of the wires just to get a look at them. All of them. Not just the ones you might feel are suspect....)

I got my bike after 4 people and two owners had been in/out of the carbs yet failed to find/correct a simple corroded spark plug cap connection.

Just sayin' that them carbs is purty but they're only part of the overall system needed to make the engine purr like a kitten. ( Well, a kitten that if it wanted to could rip your arms off.)

Good Kitty! (Purr....YOOOWWWHHHLLLL!!!) Very Good Kitty...

[kevxs]

thanks guys, i've got new coils, wires and plugs so i'm leaning towards a carb problem, UPDATE did some bench syncing (don't have a guage built yet) and float adjusting and i think i'm getting close, the popping is gone, still wont idle but i haven't had time to mess with the idle screw, so hopefully i'm on the right track, thanks for all your help!