Starting problems

[teknoflyver]

Hi My xs 11 s have an electrial problem sometimes when i turn the key it totaly dead when i leave it with the ignition turn on after a little while it ligths up when i hit the starter button it turns of agin . jens

[Schming]

Welcome

The first thing I would check, in your situation, is the earths(grounds) connections and if the bike still has the original bottle type fuses test each fuse, out of its holder, for continuity.

A little more info on the bike may help "Us" diagnose the problem quicker

[teknoflyver]

Hi it is a xs 1100 s 1982 5k7 in close to mint condition. i have checked the ground wire from the battery and from the engine and they are ok, could it be some of the contakts on the handlebar!!

[teknoflyver]

hi forgot to mention battery the is fully charged, all fuses are ok, all wires and conektors have been taken apart and it they semes to be ok

[skids]

Batteries can "charge up" even when they are bad. They can hold a "skin charge" looking like that have 12.5 volts. The problem is that they may not have any capacity at all. You need to charge it and then do a load test to see if it is any good.

[3Phase]

Welcome to the forum!

Double check specific gravity of the battery (flooded conventional battery) or do a load test (AGM / SVRLA) to make sure it is good.

If the battery is good and you have already checked everything else that only leaves the Ignition switch.


I think you need a schematic. Here is a thread where Shappers posted a link to the UK XS1100.com forum with his colour wiring diagram for the 5K7 XS1100
XS1100.com | Sport (5K7) Colour Wiring Diagram

Shappers' old-shoebox site is no longer running. I have tried to contact him and the UK xs1100.com site but no luck. I did save a copy of his diagram:-

Google Drive | SportColourWiringDiagram.pdf 69KB

[Jeffintampa]

something to check

There is a contact above the air that failed on mine. I messed it up taking the carbs in and out on the opposite side of the fuse box

[Schming]

Hi it is a xs 1100 s 1982 5k7 in close to mint condition. i have checked the ground wire from the battery and from the engine and they are ok, could it be some of the contakts on the handlebar!!

If you're positive the battery is in tip top shape then yes, the problem may be a faulty connection somewhere.

Time to get the multi-meter out and check for a faulty circuit.

I have had to repair a failed solder joint in my 80G right handle bar controls as it had an intermittent problem like yours.

[bikerphil]

Check the ignition switch connector in the headlight bucket, it can overheat and melt causing an intermittent connection.