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  #1  
Old 2 Weeks Ago
Hennepinboy Hennepinboy is offline
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Default '66 XLH Electronic Ignition Question and a stock ignition starting problem

I am looking for an electronic ignition module for a '66 XLH with the stock automatic advance ignition breaker.
Internet search the only electronic ignition I have found is the
Mallory Unilite at around $500 for the complete distributor. A little more them I want to spend.
Any other suggestions?
I believe that I have a weak spark that is causing my starting problem. I do not have a large bright blue spark, the spark is small and white to yellow in color. I am starting to believe that under compression I may have no spark in the cylinder.
I have 12.6 volts at the coil with a full charged battery. The plug wires are new carbon. The points are set at .020, I have tried closing the gap to .018 with no help. The coil ohm's out fine, thinking I might replace the coil anyway, as I am at the point of throwing parts at the problem. The timing is set on the front cylinder. The advance seems to move freely.
Even with starting fluid (I know better) sometime I get a pop out the exhaust, no start.
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This may be an option of you...
http://www.ebeyond2000.net/
Are all of your connections clean and tight?
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Quote:
Originally Posted by doodah man View Post
This may be an option of you...
http://www.ebeyond2000.net/
Are all of your connections clean and tight?
I have used those before, good product.

Be advised, this is a points replacement system, not a full EI.

The centrifugal advance mechanism will still need to be maintained.
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The advance mechanism should have no effect on the voltage at the plug.

I would check the coil first. Primary resistance for battery ignition is 5 ohms (?). My memory is worse than your spark.

Carbon leads add resistance. I would replace them with solid copper if you use points - no good for EI. Just don't listen to your radio when tiding you'll be fine.

The Mallory is a good unit. I ran one on one of my race bikes with Dyna coils. It has a single fire option as well. Makes the engine idle and start very nicely.

I presume you have brand new plugs in there.
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+1 on the copper core wires.
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Check the valves, check the plugs, check all connections. Make sure you DOUBLE CHECK the timing too,
I`d swap it for a mag , much better off
Do you have the timing mark in the dist lined up with the rubbing block of the points
and the vert line in the indicating hole on the engine
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> and the vert line in the indicating hole on the engine

On the compression stroke.
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