1978 hawk issue

[eshort]

my 1978 hawk 400 starts and runs great up to 55 mph--then it totally flatspots if u hit the throttle...feels like the ignition key was turned off.

while this sounds like a carb problem, i understand a failed stator can give this symptom

is there a simple way to determine if this a fuel vs ignition issue?

dont want to repalce parts needlessly--want to troubleshoot/diagnose properly first!!!

thanks.

[Easy Rider 2]

Originally Posted by eshort

while this sounds like a carb problem, i understand a failed stator can give this symptom

I don't see how that would be possible unless it has a magneto ignition.....with stator coils providing the power. Does it have a battery ??

More likely, I think, an ignition advance problem. If it has a centrifical mechanical advance, that can get sticky and not advance right.

I'd start with points, condensor and plugs.....if it has that kind of ignition......and a good dose of carb cleaner along with draining the float bowls.