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Old 11-22-2011, 04:55 PM   #1
eshort
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Join Date: Jun 2009
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Default 1978 hawk issue

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.
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Old 11-22-2011, 07:13 PM   #2
Easy Rider 2
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Quote:
Originally Posted by eshort View Post
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.
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