1970 Mercury Montego missing as throttle pushed

1970 MERCURY MONTEGO
117,000 MILES • V8 • 2WD • AUTOMATIC
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SUPERGIRT
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It's a 70 cyclone, the performance model of the montego. i have a miss as throttle is added. The carb has been rebuilt, float levels are good. New plugs, wired, cap, rotor, points and condenser. I installed electronic egnition and that didn't help so I put the points and condenser back in. I've played with float level thinking I was running bordering on flooding because when idling if I shoot carb cleaner in the butterfly, it bogs down. Idle is fine. I have replaced fuel filter going into the carb and added one inline before that because of varnish plugging the auxillary needle. Its a 429 with an autolite 4300 carb. Any ideas? Haven't checked fuel pump pressure but when cranking, plenty of clear-of -debris fuel fills a mason jar. Please help
May 31, 2010 at 2:53 PM
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