ok now top cylinder working but no spark on bottom cylinder, help!!!

yohuallin

Cadet
Joined
May 27, 2008
Messages
29
my last thread was about my top cylinder sparking but not really making a combustion, so today while i was looking at it, i say a wire underneath the flywheel that had been rubbing with something and was almost striped, so i replaced that wire and then when i fired it, the top cylinder now works great but now the bottom cylinder is not sparking:eek::confused:, nothing at all, no spark whatsoever, i tested it with another plug to the cylinder and nothing no spark, how can i test the coil? also i found out that my carbs are leaking from the bottom all three of them, and for some reason it spits fuel out to the the AIR INTAKE so much that it drips off of it, i run it for about 5 min and got enough to fill 2 bottle caps, any idea why it would do that...:confused::confused:
 

maxum247

Lieutenant
Joined
Sep 18, 2007
Messages
1,363
Re: ok now top cylinder working but no spark on bottom cylinder, help!!!

Swap out your coil with a known firing coil and see if the non firing cylinder now fires and the cylinder that was firing now doesn't, if this is the case the coil on that cylinder is bad.

You could have a sticking inlet needle in the carb or the float could be hanging up or float adjusted wrong and not regulating the gas flow as needed thus overflowing!
Good Luck!
 

yohuallin

Cadet
Joined
May 27, 2008
Messages
29
Re: ok now top cylinder working but no spark on bottom cylinder, help!!!

well i swapped the coild and the cylinder that was bad still bad and the coil that i thought was bad is good, now i know i have a bad cd box, but how can i fix it or test it more... is the cd box that goes to 2 cylinders dont know if it goes to 1 and 2 or 2 and 3, but it feeds the bottom cyl.
 

maxum247

Lieutenant
Joined
Sep 18, 2007
Messages
1,363
Re: ok now top cylinder working but no spark on bottom cylinder, help!!!

well i swapped the coild and the cylinder that was bad still bad and the coil that i thought was bad is good, now i know i have a bad cd box, but how can i fix it or test it more... is the cd box that goes to 2 cylinders dont know if it goes to 1 and 2 or 2 and 3, but it feeds the bottom cyl.

What year and horsepower is your engine? I don't beleive you said!

Are the modules and coils on your engine the blue ones? (Prestolite)
 
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