Author Topic: Sparkplugs Inconsistent  (Read 933 times)

Tom Honegger

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Sparkplugs Inconsistent
« on: July 20, 2018, 09:42:41 AM »
Friend of my has a GT 350 clone, 302 with original Shelby Supercharger. When he pulls plugs, front 4 are black & sooty, back 4 look perfect, almost like they're new. What would cause such a difference, front to back?
Thanks, Tom

shelbydoug

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Re: Sparkplugs Inconsistent
« Reply #1 on: July 20, 2018, 06:36:54 PM »
The carb is flooding. Check both front and back but obviously the front plugs are under the carb primaries.

Incidentally, what ever carb you use, make sure the floats are the solid nitrofil ones and not the hollow soldered together brass floats. Those things will collapse under normal useage. Forget about it with a blower.
« Last Edit: July 20, 2018, 06:38:30 PM by shelbydoug »
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Tom Honegger

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Re: Sparkplugs Inconsistent
« Reply #2 on: July 21, 2018, 10:30:59 AM »
Thanks. I'll pass this info on. Any other thoughts on this?

2112

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Re: Sparkplugs Inconsistent
« Reply #3 on: July 21, 2018, 11:18:45 AM »
Possible vacuum leak?