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Old 08-24-2017, 07:28 PM   #8
dmsfrr
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Location: Abq, NM
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Default Re: Heavy Black Smut on Plugs

Quote:
Originally Posted by JeffB2 View Post
On many of the forums guys are quick to blame the Carb and then the real culprit turns out to be excessive fuel pressure caused by fuel pumps that are off shore produced and are producing pressures well over specs. .....
True enough. nstegall didn't say anything about changing the fuel pump, so the assumption is he has the same one as when it was working fine, and before that. Since the carb was most recently changed before the problem happened, it may(?) be more likely the culprit.
And yes, double checking the fuel pressure while you're under the hood already is a good thing, even before doing something with the carb, to help narrow down where the problem really is.
The car may have a defective or missing fuel filter and there's crud stuck in the carb float valve...
.

Last edited by dmsfrr; 08-30-2017 at 11:04 AM.
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