i have had the same problem 5 times for 3 different reasons...
had a fuel pump fail and it was just starving out but would get a bit of fuel then die again
just had to replace my ignition switch because it was shot and heated up and failed inside after a few miles of driving and would start and stop intermittantly,
and also had the same issue over and over with the stock carb and a replacement stock carb before i finally bought a weber 32/36 with electric choke now that all of that is done truck runs great
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Luvless
1980 Mikado-Sold.
1993 Lexus SC400 my Daily
2004 Yamaha WR250F my new love in life
2016 Toyota Camry my girls ride