1980 xs1100 bogs down

[slow mo]

hi i have an 80 xs11 starts great runs great ;;untill you slow down; after a hiway ride of 100 miles or 10 miles o=nce i slow down the bike has no power as if its running on 2 cylinders ;; timing seems all messed up but heres the kicker if i let the rpms drop to zero and then crank the throttle the bike jumps back to life only to bog down again ;;i have had the carbs done and cleaned but not sinked help bike is mint except for this constant problem thanks slow mo!!!

[XSPastor]

You have not synchronized the carbs? Hmmmm. Why not? You better go ahead and do that and then let us know how it's running.

[prometheus578]

Agree with the Pastor.
Anytime carb work is done, a "synch" must follow.
The twisting and pulling removing and replacing carbs is enough to throw it off.
Once they're synched, then we can focus on stumbling, low RPM, and other lack of power issues if they're still present.
A bad synch can do all of these things..

[slow mo]

hi;; and thank you both

i will have that done as soon as the snow lets me thanks again i,ll let you know;;;slow mo!!!

[digitalsam]

How to

I am going to have to sync the carbs as soon as I am able to put the engine back together. Is it a job that an average Joe can do, or is it best left to the pros? I have the same question about timing?

[XSPastor]

Anybody with the knowledge can do those jobs. Do a search - you'll find plenty of info.

[Ken Talbot]

Syncing carbs is a fairly easy procedure. For about the cost of an hour of shop time, you can buy the tool to do the job, then you'll have it for future use.

[Larrym]

Carb Synch Club

I became a member of the synch club just last month. Definitely doable by the average dude. Sounds like an intimidating process but doing it is far quicker and easier than reading about it. In real world/real time I did it in less than 20 minutes after the gauges/prep was done. Very rewarding performance-wise if the carbs are not all working equally together.

One of these days someone (???) will post a step-by-step video and the carb synch process will be de-mystified. Til then I say you don't have to wear a Lab Coat to get the job done.

[adam79]

I was intimidated by the carb synch myself, but luckily a friend had the proper tool, and once we did it I realized just how simple it was. Shop time around my town is $85/hr, and you can get a decent sync tool for about that. I just was looking at one for $89

[petejw]

Could also b worth while checking the
pick up wires. do a search theres plenty
about it.

[boyat68]

You also may want to check to see if you have sticking floats as that will allow more fuel into the bowl and possibly over flow to the air box. The 80 plastic floats do stick down in the sides of the bowl and you have to do several bench test to ensure that the floats do not fall too far down, thus allowing wedging on the sides of the bowl. You also must run synch those carbs on the bike as too much fuel will foul your plugs and misfire. Pull your plugs and see if carbon build up is present, or that they are wet and black.

[slow mo]

thanks all

i thank you for the advice,, i can,t do the carbs myself as i am looseing the use of my hands,, but no problem through this site i have found some help!! take care and ride on i,ll let you know how i made out,,,slow mo

[fredintoon]

Grip enhancer

i thank you for the advice,, i can,t do the carbs myself as i am looseing the use of my hands,, but no problem through this site i have found some help!! take care and ride on i,ll let you know how i made out,,,slow mo

Hi Slow mo,
synchronising the carbs is a good idea anyway but I'd suppose that unsynched carbs would give constant poor running rather than an intermittent problem.
My best guess would be to check the ignition pickup wires.
I dunno if you are aware of the Kuryakyn Crampbuster but such a device may help you to hold the twistgrip.
http://www.denniskirk.com/jsp/tpl/cm...atId=41004&np=
Dennis Kirk and doubtless many others stock them and other similar products that will ease a person's need to grip the throttle.

[xs11lover]

Don't forget to check the pickup coil wires, mine did all kinds of crazy things before I fixed them.

[thewiz]

yup ...

Don't forget to check the pickup coil wires, mine did all kinds of crazy things before I fixed them

What he said.