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Last Post: toe
Posted On: 17 Minutes Ago
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29th February 2016
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A Million Facts & Figures
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Join Date: Jan 2005
Location: Famous Potatoes
Posts: 9,931 Sportster/Buell Model: XL883 Sportster/Buell Year: 2007 Sportster/Buell Model #2: Buell Cyclone Sportster/Buell Year #2: 1999
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Did you have plugs installed when you checked spark?
These crank trigger ignitions need some compression, it's how they determine the cylinder phasing.
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29th February 2016
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Biker
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Join Date: Dec 2015
Posts: 32 Sportster/Buell Model: M2 Sportster/Buell Year: 1997
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Quote:
Originally Posted by aswracing
Did you have plugs installed when you checked spark?
These crank trigger ignitions need some compression, it's how they determine the cylinder phasing.
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No i did not. Wil try this.
Is it meassured by the MAP sensor?
Thanks!
__________________
Hesitation is not an option!
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29th February 2016
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A Million Facts & Figures
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Join Date: Jan 2005
Location: Famous Potatoes
Posts: 9,931 Sportster/Buell Model: XL883 Sportster/Buell Year: 2007 Sportster/Buell Model #2: Buell Cyclone Sportster/Buell Year #2: 1999
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Quote:
Originally Posted by fishman
No i did not. Wil try this.
Is it meassured by the MAP sensor?
Thanks!
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A guy at HD once told me it was based on the MAP sensor. But I don't think that's right, I think it's based on compression.
Bottom line, and I've seen this on crank trigger bikes that run perfectly, you remove the plugs and put a plug into it's wire and lay it on some metal to check the spark in the traditional way, and you get none. Whether it's the loss of compression or the loss of manifold vacuum that's causing it, I'm not sure. I suppose I could run an experiment to figure it out, but I'm not that curious. |
8th March 2016
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Senior Chief Know It All 3rd Class
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Join Date: Apr 2005
Location: Thompsons Corner, MD
Posts: 1,701 Sportster/Buell Model: 883 Flat Track Racer Sportster/Buell Year: 2002 Sportster/Buell Model #2: RIP 1200S Sportster/Buell Year #2: 1999
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Any updates?
__________________
1999 XL1200S - SE slips ons, SE ignition 5500, 6800 & 7500 RPM (I got worried about the ignition getting discontinued so I bought what I could)
Link to thread on "Harley Racing" events across the country: http://xlforum.net/forums/showthread.php?t=53470
These events include Hillclimbing, Flat Track Racing, Ice racing, Drag Racing, etc.. They are all sports dominated by Harley Davidsons. They are always located in scenic areas and are great weekend rides. The above link allows XLforum users to coordinate riding to these events together.
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13th May 2018
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Biker
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Join Date: Dec 2015
Posts: 32 Sportster/Buell Model: M2 Sportster/Buell Year: 1997
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Quote:
Originally Posted by A 4 liter V8 eater
Any updates?
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Yess... a little late but still....
Replaced the TC88 for a Thunder Heart ignition. Way simpler setup en fired right up! |
30th June 2018
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Biker
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Join Date: Aug 2012
Posts: 4 Sportster/Buell Model: x1 lightning buell Sportster/Buell Year: 1999
Reputation: 10
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hello fishman...thanks for reply, which thunderheart ignition did you use and do you have any more pics of your bike...
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