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Have a 656 Hydro Gas [hog] that just had a tune-up and added an electronic ignition. Before and after the tune-up it runs great at 3/4 throttle with hydro full speed ahead but if you open it up "wide open" it dies off like it is not getting fuel. What's the problem?
Mechanic is scratching his head.
Any help would be appreciated.
THANKS!
 
Has anyone thought to put a spark tester on one of the sparkplug wires and watching it as the engine dies, noting whether or not the spark fails as the engine falters (spark problem) or the spark continues as the engine loses power (fuel problem)?

Where is the electric fuel shutoff valve on the carb's main jet connected in relation to the ignition ballast resistor?
 
Electronic ignition conversions are hard on coils. We try to sell the customer a Flame Thrower coil. Try another coil you know is good. If that helps consider putting on a HD coil.
 

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