Starting Problem

Energy One
HuskerChop

HuskerChop

Member
Heres a good one for eveyone! 07 Chopper, Thunderheart ign, 10.2 compression, 600 cam. Problem just started mid way thru summer. When I would hit start, amp draw was so high that it would set off bike alarm (sensing low voltage id guess) for a couple seconds and then turn over and start fine. Do it about 95% of the time. Doesnt matter warm or cold. I did a load test on battery, was fine but I replaced anyway, same problem. Pulled starter and initial amps to on battery charger to start spinning was about 105 amps, and decrease to about 70 amps when running. Disassembled, cleaned, new bearings and shimmed motor and reinstalled. Same problem! Put on my spare starter, same prob. Pulled spark plug wires, still did it so I knew its not ignition timing. With plugs pulled, spins fine. Put plugs back in, hit starter and heavy amp pull and then spins fine. Only thing I can think of is possibly bad positive or ground battery cables or air system obstruction intake (far fetched I know). The comp release are activating on start altho I have not pulled thie, to see if plugged. Anyone have any ideas?? Thanks!
 
Moespeeds

Moespeeds

Well-Known Member
Bad compression releases, bad ground, or timing too advanced? Oops yeah see you checked timing. Could only be bad releases or bad ground. Triple check that ground connection at the starter. Also make sure the short wire going from solenoid to starter motor isn't frayed and arcing during start.
 
Bigkurtie

Bigkurtie

Member
I had the same problem. It was a bad crimp on one of the grounds at the battery. It would chirp, drag a little and then eventually start. Almost left me stranded a couple of times. Pulled on all the wires and finally found it at the Negative terminal. All has been well since new crimp.
 
HuskerChop

HuskerChop

Member
I am gonna pull the compression releases hopefully this weekend. I can feel them activating (pulling down) and then releasing but maybe one is plugged. The entire starter system was changed so that should eliminate all of that system minus the ground and battery cable. I did have a Thunderheart ignition go bad around the same time this problem started. When the box would get hot, the rear cyl timing would wonder all over the place and the rear cyl would ping, never detonate. I bypassed all of the bikes wiring and wired box direct and prob continued. Sent box in to Thunderheart and they were able to duplicate and sent me a new box. I am starting to wonder when box went bad if detonation damaged the comp release. Still wanna hear peoples thoughts! Thanks alot!
 
HuskerChop

HuskerChop

Member
I also checked battery voltage drop both at battery terminals and at starter when I hit the button. Voltage dropped at battery to about 6 volts, same as voltage at starter. The terminal gets very hot with just 2 start attempts that you cannot put your hand on terminal or it will give a nice burn. I know the pos and neg terminal connections are all good but will check the actual crimps. Thanks for all the help!
 
HuskerChop

HuskerChop

Member
FIXED!! Took off both pos and grnd cables and grnd end at primary sealed up good but corroded internally. Prolly cuz i wash the damn thing so much! One trip to oreillys, soldered new ends on new cable and problem fixed! No got a prob with tach leds that I will ask in another thread!
 
Five Five

Five Five

Well-Known Member
HuskerChop said:
FIXED!! Took off both pos and grnd cables and grnd end at primary sealed up good but corroded internally. Prolly cuz i wash the damn thing so much! One trip to oreillys, soldered new ends on new cable and problem fixed! No got a prob with tach leds that I will ask in another thread!
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Good to hear:up:
 
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