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-   -   Can you solve this starting enigma ??? ( https://www.xt660.com/showthread.php?t=27944)

tedmagnum 03-09-18 13:53

Can you solve this starting enigma ???
 
I have a 2004 XT660R. It will only start if it has been on a charger for half an hour or with a boost pack.

Even with a brand new quality battery.

It needs a really high battery voltage to get a spark. The starter motor spins fine and fast and the coil is getting power to the primary, but it will not spark unless the battery voltage is maxed out.

If I leave the igntion on for a couple of minutes so the voltage drops, the coil won't spark. Even though it's got more than 12v.

Tried a new coil, new main relay, new reg/rect. None make a difference. The starter turns no faster on on the boost pack than with the stand alone new battery.

Could it be the ECU ? I assume it controls the coil.

I'm not sure how battery voltage could affect the triggering of the coil. Especially with a new battery.

Has anyone ever seen this before ??

Thanks in advance.

Ted

Gas_Up_Lets_Go 03-09-18 17:15

I've had an issue in the past with a weak spark, it never stopped the bike from starting, just had to turn over a few times before it would spark up. It was the lead from the coil to the plug that was the problem - but is sounds like you've already covered this.

Chalk Two 03-09-18 19:49

a new CR9EIX all the way brother.................plus some checking of earth points.


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