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1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
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Old Dec 30, 2009 | 11:56 PM
  #1  
Millhead's Avatar
Millhead
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New in town

Hi, I'm a new owner of a 1977 F250 Super Cab. It's got 129000 miles on it, very little rust and interior is in very nice condition. The engine is a 400M with most all the smog stuff removed. Runs good when warmed up but has a slight stumble when leaving from a stop and is really bad when still a bit cold. Not sure if its the carb or advance, runs with 20" vacume at manifold and 0" at dizzy when idling. The line to the dizzy comes off the carb by the choke assemble is this the correct spot?
I have a photo of my trucks in my album but unsure how to post it, will try to figure that out later.
 
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Old Dec 31, 2009 | 12:02 AM
  #2  
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arctic y block
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From: Island Southeast Alaska
Welcome aboard FTE. And that ported vacuum should be good. Maybe look into wear in the timing gears. As that is about the right mileage for that on a 351/400M.
 
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Old Dec 31, 2009 | 12:30 AM
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Millhead
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Thanks, artic y block.
I will check that tomorow.
 
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Old Dec 31, 2009 | 02:22 AM
  #4  
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George Frasier
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Millhead - Frum da hills uv Eest Tenusea, we welcome U aboard. Here, problems 'get greased' and fixed. Keep the wheels turnin' an on da down side.
 
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