300 six 1978 f150 4x4,start the truck -starts good then stalls,start again it fires but stalls right away.does this about 10 to 20 times,then runs -get going and it will stall again.Once the motor is warmed up it runs great.But if you shut down a leave it about half an hour you go through the same thing again.We changed the carb with a brand new one,also a brand new fuel pump and a brand new fuel filter.The motor has about 6500 km. since replace.The only other thing I can think of is the spark control box or the distributor shaft.Any suggestions????
Replace the distributor's magnetic pickup located inside the distributor surrounding the distributor shaft, the only other thing thankfully on this ignition system if memory serves me on the f 150 straight six 300 cu inch is the dura spark ignition control box, of course do the obvious tune up parts replacement dist.cap rotor,plug , sparkplugs before spending the $40.00 - $50.00 bucks on the dist.. pick up, you may have a weak a fuel pump check for adequate fuel pressure at carb 7 - 10 lbs.
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yes choke was set,everything was running fine for 6 months,then this started two weeks ago
We Changed the dura spark ignition control box and it seems to be running much better.No stalling so far,hope this was the problem.
Has the choke been adjusted properly?
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