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1Back to top Go down   Erratic starting very frustrating Empty Erratic starting very frustrating Fri Dec 19, 2014 7:34 am

coopz

coopz
active member
active member
Hi All, bike has been stored for last 9 months. Have kept battery charged with trickle charge. Went to push starter button lights all dimmed on dash. Tried again still the same result. Had a look on previous threads and tested first the starter relay with  a direct contact to relay from battery  and starter turned the motor over with no probs. Did notice lights did not fade when pushing starter button. Could this be a problem relay causing this as I thought lights would generally dim with load shed. Tested wires from starter button was 9volts and now 4. Then after a short period I tried to start it again a woa it started. I let it run for a while turned it off and tried again and sure enough back to lights dimming and frustration. The fuel pump works when button pushed now checking battery and its down to 12.3 volts and advice would be well received Coopz


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1985 K100 RS
    

92KK 84WW Olaf

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Life time member
Life time member
Not expert on this but.....

Load shed relay cuts the power to the lights etc.

But my thoughts are with a bad earth as in intermittent. Especially as you tried the direct route and the starter worked ok. The lights dim when you pressed the starter button, so the switch should be ok too unless you have an erratic contact meaning lights dim sometimes. You have earth to gear box above the gear lever, also earths under fuel tank, all worth checking. Also a clean of the contacts at the multi-pin connector to the ICU ECU.

While I am thinking of the brushes in the starter motor they are easy to get at and clean. Doesn't take long and if they are in trouble and a repair kit is cheap and an easy fix.

A little alert though. Had a battery problem in the car a few weeks back. Not enough power. Suspected a cell might be low, checked and sure enough one low cell. Charged it up and it tested fine. Showing correct volts and alternator charging ok, no battery drain. Still a no go. Decided on a new one as it was in the car 9 years. Problem solved. Despite being good the cranking power for starting was only about 25% of what was needed. A much closer look revealed one cell was really bad. 12.3 is low too.


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1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

Rick G

Rick G
admin
admin
Sounds like a dirty connection on the battery or earth at the gearbox earth point.


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"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1999 K1100 LT with a Big Block 1200
    

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