The XL Forum cookies are only used to keep you logged in. The XL Forum administrators don't have access to the cookies stored on your mobile device or computer. You can delete the cookies at anytime by logging out and checking the DELETE COOKIES box.
The XL Forum doesn't share, or sell, your information with any person or company.

aswracing · #51 29th February 2016

Did you have plugs installed when you checked spark?

These crank trigger ignitions need some compression, it's how they determine the cylinder phasing.

fishman · #52 29th February 2016

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.

No i did not. Wil try this.
Is it meassured by the MAP sensor?
Thanks!

aswracing · #53 29th February 2016

Quote:

Originally Posted by fishman

No i did not. Wil try this.
Is it meassured by the MAP sensor?
Thanks!

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.

A 4 liter V8 eater · #54 8th March 2016

Any updates?

fishman · #55 13th May 2018

Quote:

Originally Posted by A 4 liter V8 eater

Any updates?

Yess... a little late but still....
Replaced the TC88 for a Thunder Heart ignition. Way simpler setup en fired right up!

x1xb · #56 30th June 2018

hello fishman...thanks for reply, which thunderheart ignition did you use and do you have any more pics of your bike...