No spark all 4

[le_bucheron]

I don't have any sparks on all 4 cylinders since I rebuilt the carburetor, changed the fuses box and a small clean-up ...

1: I have on my battery 12.5V and 8.5 when I start
2: At the coil connector I Had Both 8.5V on wire (orange and red / white) each side
3: The side stand switch is good
4: I've tried different ignition box

Thanks!!!

btw xj1100 83 canadian

[skids]

Just for grins, try jumping off of a car battery with the car not running.

[DGXSER]

8.5 volts is not enough. The system needs 10.5 IIRC for the TCI to work. Sounds like you have a battery issue.

[IanDMacDonald]

Load test that battery. My guess is a collapsed plate, causing a bad cell.

[le_bucheron]

Thanks!

I will try a new batterie tonight!

[motoman]

8.5 volts is not enough. The system needs 10.5 IIRC for the TCI to work. Sounds like you have a battery issue.

+1......voltage droppin' that much under load kills that battery for any farther testing......if known fully charged.

[le_bucheron]

i tried with an other battery . i have 10.5 volts @ the TCI before start. During ignition i still end up with 8.5 volts @ the TCI... I cleaned all my connections with contact cleaner and added contact jelly. Would a drop in voltage like this be caused by short circuite? If so is there any common places i should look at?

[DGXSER]

It does sound like your losing voltage, and it could be any combination of places. However, you should have at least 12V before you hit the switch to start it. So the battery your using is low to before you use it.

A fellow local XSive was low on voltage to his coils, he chased the wiring all over the bike. He found he would clean a set of connections and pick up a 1/2 V, next set maybe another 1/4 V. On and on until he gained about 2V time he was done.

[MPittma100]

Too Little Voltage

A voltage drop is caused by too much resistance. Resistance builds heat and erodes connectors. These drops can be caused by poor contacts in switches, poor battery connections, and poor grounds. I am assuming that the engine spins over properly with the starter? If not, check the connections to it. Try jumping across the relay to see if the engine spins over differently than with the starter button.

Insure that you have a good battery. Then look at all battery connections at the battery, at the starter relay (near fuse panel), at the starter, and especially the chassis ground(s). This is a weak ground at best. See the post below.

http://www.xs11.com/forum/showthread...attery+grounds

MP

[motoman]

i tried with an other battery . i have 10.5 volts @ the TCI before start. During ignition i still end up with 8.5 volts @ the TCI... I cleaned all my connections with contact cleaner and added contact jelly. Would a drop in voltage like this be caused by short circuite? If so is there any common places i should look at?

.....Bettin' your only the 8.5V at the two red primary leads to each coil too when cranking.....not good. You got cruddy internal contacts at the ignition switch, weak grounding of two black wires holding down the regulator and weak connection at the main 30A fuse. With a known good batt.(12.5-12.8V) static sitting charge, starter load should NOT pull batt. below 10.5V(if all other known connections are good), which in this case they are not.

[le_bucheron]

-Did somes new grounds (batt to chassis, chassis to engine).
-Did new power wires (Batt to solenoid, solenoid to main, solenoid to starter)
-Clean-up the regulator ground.
-Unplug all plug behind the headlight except starter button
-Pull-out head, tail, signal fuses
-Tried 1x bike batt., 2x car batt. and 1x booster pack

Always the same thing but now I have 12v before cranking and 8.5v during

Do you know what is the minium connectors I need to have plugged to got some sparks?

Im not a 12volts master but I have the feeling that my problem is not a waste of energy but something which passes only 8.5V

Here my bikes! One for running and one for spare parts:

[petejw]

sounds like it could be your starter motor
drawing the power, have u got a spare one to try?

[le_bucheron]

Yeah I have a spare starter! I will try.

If my Clutch won't disengage does it cause this trouble?
Something like that:

http://www.xs11.com/forum/showthread...utch+disengage

I tried my Grand cherokee battery and another boost cable set = same ****...

[le_bucheron]

sounds like it could be your starter motor
drawing the power, have u got a spare one to try?

No It wasn't the starter... Same thing with my spare starter...

[skids]

You tried another battery. Was it an old charged bike battery? Was it a known good battery? Did you try jumping off of a car (with the engine off)? Batteries can show a "skin charge" but have no real capacity to start the bike.