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DAN JOHNSON Posted on Feb 17, 2020
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2004 BMW R1150RS 7,700 Sat for 2 yr with some starting. No spark, bought coils and new plugs. Bike has never been in rain or outside.New battery. turns ovr nice. Please respond if you know this bike

1 Answer

Vernon Taylor

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  • BMW Master 7,446 Answers
  • Posted on Feb 18, 2020
 Vernon Taylor
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I don't know the bike but I doubt it is much different in principle than many others. The first possibility to consider is whether any immobiliser is functioning properly and is being properly disarmed before attempting to start. The owner's handbook would be a good place to begin...

Once you know the immobiliser is disarmed and power is flowing to the parts it is supposed to flow to, using the circuit diagram, the various supplies and grounds can be checked and using an oscilloscope check the output from the various sensors as applicable (crankshaft, camshaft).

Even though the bike has never been outside it might not have been immune from the effects of damp and condensation that can defeat many moisture barriers. It isn't unusual for electronic unit and sensor terminals to become dull, oxide coated and a barrier to current flow...

5 Related Answers

Anonymous

  • 7 Answers
  • Posted on Feb 22, 2009

SOURCE: My 2004 Honda Shadow will not start. I have

I would get a test light and check if i had power to my coil and to my cdi module .You more than likely lost powerto one of them .those cdi last for every. check your switch make sure you got power there to. Hope this help

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tombones

  • 3567 Answers
  • Posted on Apr 01, 2009

SOURCE: my keeway wont start

Check the fuses. Is the kill switch on or shorting out? Disconnect it and then check for spark. Sidestand/centerstand should be up, Got a good battery?

I am unfamiliar with your Keeway and just trying to help. Don't give me a bad rating if I miss the mark on this one. Thanks.

tombones

  • 3567 Answers
  • Posted on Apr 11, 2009

SOURCE: bike only fires once

Okay, let's have a look at it. Say Ahaaa.
The probable cause of the problem is not the spark. Get a fresh set of Stock NGK spark plugs, ground the plus to the engine, and check each cylinder for spark as the starter button is pressed for 3 seconds or so. I will wager that the spark is present.

The likely problem is the fresh gas was put into a very rusty gas tank. Bits of rust now inhabit your carb and are having fun plugging up the carb. Look at the gas valve. With a little luck there is a small bowl behind the valve. Remove it and tell me what you see in the bowl.

George

  • 320 Answers
  • Posted on May 27, 2009

SOURCE: bike wont start

I would check for compression on the cylinders. a engine has to have fuel,fire and compression or it wont run. Check the specs to get the operable compression levels.

co7196

Ned C Cook

  • 3433 Answers
  • Posted on May 30, 2009

SOURCE: Battery will not hold charge after being charged. bike sat for yr

ck the chargingrate at the posts. Should be between 13.6 to 14.2. This is assuming the battery was properly filled with acid and charge before placing into service. The lower the voltage, the higher the amps. 12.0 max charging, 14.2v no charging good luck

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Will not fire a spark

Hi,
My first thought is the plug wire. You can check it by connecting an ohmmeter to each end and measure the resistance. If the meter pegs, then the cable is bad. Another is to make sure you are getting juice to and through the ignition switch. If it sat outside, the weather may have ruined the switch. Check all your wiring and make sure there are not any breaks. I have seen rodents take up residence in carts, motorcycles, snowmobiles, and ruin an entire electrical system. Let me know if I can be of more help.
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