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Why is my bike difficult to start?

Started by DucHead, October 19, 2008, 09:28:01 AM

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Drunken Monkey

#15
October 20, 2008, 05:34:56 PM
I had a starting problem with my bike, and I checked everything (sync, FI, Sensors, etc.) and still couldn't nail down the problem.

Turned out the ignition pickup sensor wasn't gapped right...
I own several motorcycles. I have owned lots of motorcycles. And have bolted and/or modified lots of crap to said motorcycles...

DucHead

#16
October 21, 2008, 05:29:39 AM
One thing I failed to mention is that I fixed (Rameses did some welding) some exhaust leaks, and afterward the idle was low (800 rpm).  I used the throttle adjust bolt and upped the idle a bit and its started easily ever since.

Could that have been the problem (low idle)?
'05 S4R (>47k mi); '04 Bandit 1200 (>92k mi; sold); '02 Bandit 1200 (>11k mi); '97 Bandit 1200 (2k mi); '13 FJR1300 (1k mi); IBA #28454 "45"

ducpainter

#17
October 21, 2008, 05:32:22 AM
I guess it could...

The cold start lever should compensate for that.

I believe that adjusting the throttle stop will put your tps out of adjustment to a degree.

It may not matter.
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DucHead

#18
October 30, 2008, 06:14:46 AM Last Edit: October 30, 2008, 06:21:53 AM by pompetta
Update:  A few days ago, I set the throttle position bolt back to its original setting and then turned the air bleed screws out 1/8th of a turn.  Idle speed increased and starting is better.  Plugs are a light tan.

It even started this morning on the second try and the outside temperature was 24°F!  It hasn't done that in a year or two!!  [moto]
'05 S4R (>47k mi); '04 Bandit 1200 (>92k mi; sold); '02 Bandit 1200 (>11k mi); '97 Bandit 1200 (2k mi); '13 FJR1300 (1k mi); IBA #28454 "45"
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