Weak spark issue

[Jeffyjeff]

So I put a 421 cub kit on my 96 banshee with 35mm carbs, vforce reeds, t6 exhaust, open air filters, running 160 main jet. Started having a hesitation issue at wide open throttle. Seemed like a fueling issue but went to 170 and then tried 150 neither made much difference. Put a new coil, wires, caps, and plugs and still same issue. After some more testing I found it had good spark at the wire without the caps on it but with the caps on the wire could see no spark touching the plug to the head at .030 gap. So I dropped the gap to .020 and it fixed the running issue. Anyone have an idea on what's going on there? Weak stator, flywheel issue, or coil maybe faulty? I tested the primary side with a test light and it lights up but not very bright is that a sign of weak output from the stator? 

[Ayesully810]

so you fixed the issue by gapping your spark plug differently and you want to know WHY this fixed the issue? hard to understand how you wrote it.

but if this is the case. Take a look at this thread.

 

[Jeffyjeff]

Yeah basically just wondering if it's something I should be concerned with or if it's normal to have to do that with the modifications made 

[Jeffyjeff]

Read the thread, wish I would have found that thread when I was trying to figure it out. Ran into this issue on my car before but running 35 psi of boost on that. Didn't think plug gap would make that big of a difference on these things. Thanks for the quick reply though 

[VegasJeff]

Hesitation at wide open throttle would make me look at drilling the gas cap hole and installing a dual pingle Valve, plus check the pickup gap.

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