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Old 07-31-2009, 09:39 PM   #1
walkingbear OP
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No spark to the plugs

My neighbor has a 88 R100RS. He tried to start it.. nothing.

I went down with a a spare plug .. connected to the
spark plug wires. NO SPARK on either side.

My guess is the coils.


Any Ideas?
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Old 07-31-2009, 09:43 PM   #2
opposedcyljunkie
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Remove the tank, check the coil connections firstly. Check for loose connections etc etc.
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Old 08-01-2009, 01:27 AM   #3
Wirespokes
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Damn! The question is so wide open, it could be just about anything! At this point, with no clues or data, one would start at the battery working his way towards the bean can - and all points in between.

Just as a wild guess, I'd say the bean can cause it's the most expensive piece there.

All funning aside, the hall sensor is housed in plastic which deteriourates over time and with heat. So, besides connections, low voltage, and the ICU and it's lack of heat sink paste, the bean can is about all there is.

Start at the coil and see if there's voltage there. If yes, pull the plug from the ICU to the bean can and ground the middle connection. The plugs should spark each time it's grounded. If it now sparks, you'll know it's the bean can hall sensor.

If still no spark it's gotta be the ICU or coil or connections to those items.
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Old 08-01-2009, 03:51 AM   #4
opposedcyljunkie
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Quote:
Originally Posted by Wirespokes
Start at the coil and see if there's voltage there. If yes, pull the plug from the ICU to the bean can and ground the middle connection. The plugs should spark each time it's grounded. If it now sparks, you'll know it's the bean can hall sensor.
This should be in the Tips & Tricks thread
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Old 08-01-2009, 06:11 AM   #5
bgoodsoil
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+1. this may not be the best electronic ignition system but at least it's easy to troubleshoot.
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Old 08-01-2009, 06:11 AM   #6
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Any solar flares in your area?
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Old 08-01-2009, 08:28 AM   #7
walkingbear OP
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Solar flares

Yeah..everyday .. it flares up and gives us record heat. Hey there is an excessive heat warning today.. 112-114

It's like living in hell without the devil.. but it's a dry heat
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Old 08-01-2009, 08:32 AM   #8
Wirespokes
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Quote:
Originally Posted by walkingbear
Yeah..everyday .. it flares up and gives us record heat. Hey there is an excessive heat warning today.. 112-114

It's like living in hell without the devil.. but it's a dry heat
Aw, cut yer complaining! It was 109 at my place a few days ago. Just consider it a free sauna and drink lots of water!
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Old 08-01-2009, 10:56 AM   #9
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We broke the all time record at 104 and for us mossbacks, that's HOT. I lived in Fresno for 5 years, I don't know how. Bought the beemer new there and didn't even have an oil cooler!
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