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Engine idle rough

J

John Figliozzi

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" I have a Pleasurecraft / For

" I have a Pleasurecraft / Ford 351 half fresh water cooled, half raw water cooled. I've replaced the spark plugs, Cap, rotor, points, condenser, fuel separator, changed the oil and filter, flushed the fresh water system, checked the dwell and timing, and cleaned the carb. Yet after all the work the engine still idles rough. The manufacturer recommends idle RPM to be set at 650. I set it at 650 but it spikes to 700 to 750 periodically. The engine dosen't rev when it spikes. Sometimes it acts like it wants to stall - but just for a second. It's almost like it's missing. Any ideas what I can check for? It also idled rough before I did all the repairs.

Thanks
John "
 
try and electronic ignition #

try and electronic ignition # prx ml181 cost 59.95 from the car shop 309-797 4188 and then adj the carb assume a holly 4 barrel.
 
" have you rebuilt the carb?

" have you rebuilt the carb?

I had close to the same prob. If I held the choke closed on the rear carb, it smoothed out, but when it sat there on its own, it ran rough. "
 
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