No spark to the plugs

walkingbear · 07-31-2009, 08:39 PM

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?

opposedcyljunkie · 07-31-2009, 08:43 PM

Remove the tank, check the coil connections firstly. Check for loose connections etc etc.

Wirespokes · 08-01-2009, 12:27 AM

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.

opposedcyljunkie · 08-01-2009, 02:51 AM

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

bgoodsoil · 08-01-2009, 05:11 AM

+1. this may not be the best electronic ignition system but at least it's easy to troubleshoot.

08-01-2009, 05:11 AM

Any solar flares in your area?

walkingbear · 08-01-2009, 07:28 AM

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

Wirespokes · 08-01-2009, 07:32 AM

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!

08-01-2009, 09:56 AM

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!

07-31-2009, 08:39 PM	#1
walkingbear ^OP Beastly Adventurer Joined: Jun 2004 Location: Scottsdale AZ.. Oddometer: 2,852	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? __________________ BMWMOA 82741 75 R90S ,83 R100RT (Baron) , 88 R100GS ,94 R1100RS (Aragorn) 2k 1150GS w/hack,05 K1200S (Gandalf)

07-31-2009, 08:43 PM	#2
opposedcyljunkie Heavyweight Boxer Joined: Feb 2007 Location: By the Lake Oddometer: 4,758	Remove the tank, check the coil connections firstly. Check for loose connections etc etc. __________________ OCJ 92 R100GS-PD Euro 01 Vespa PX150E 05 Yamaha Fazer FZS-1000 07 R1200GS

08-01-2009, 12:27 AM	#3
Wirespokes Beemerholics Anonymous Joined: Jul 2002 Location: Jackson's Bottom Oregon Oddometer: 7,354	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. __________________ Wanted: Dead, smashed, crashed or trashed gauges BMW GAUGE REPAIRS - TACHSPEEDOCLOCKVOLT METER PODs & LIGHT BOARD*

08-01-2009, 05:11 AM	#5
bgoodsoil Dare to be Stupid Joined: Jul 2008 Location: Atlanta, GA, USA Oddometer: 3,773	+1. this may not be the best electronic ignition system but at least it's easy to troubleshoot. __________________ '85 BMW r80G/S--Another G/S on the road--Central America on a Shoestring--Nova Scotia on a Shoestring Proud SmugMug User Support ADV: Don't give those cheap bums your discount code

08-01-2009, 07:28 AM	#7
walkingbear ^OP Beastly Adventurer Joined: Jun 2004 Location: Scottsdale AZ.. Oddometer: 2,852	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 __________________ BMWMOA 82741 75 R90S ,83 R100RT (Baron) , 88 R100GS ,94 R1100RS (Aragorn) 2k 1150GS w/hack,05 K1200S (Gandalf)

08-01-2009, 05:11 AM	#6
Jasper ST4 Guest Oddometer: n/a	Any solar flares in your area?

08-01-2009, 09:56 AM	#9
Jasper ST4 Guest Oddometer: n/a	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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