george!
your van is showing classic fuel starvation symptoms! evry time you shut
it off or it quits dirt filters back from the tank strailer, evry start it
sucks the dirt right back up starving itself.
drop the fuel tank, take out the sending unit and remove the clogged fuel
pick up nylon "sock" filter. some may say blow air back into the tank with
the cap off and just blow the sock off into the tank but evry so often that
back fires and the sock or pieces of it get caught sucked up against the
pick up tube starving it "again".
the old "match book" point gap works just fine as they areconsistantly
around .016-.018 in thickness.
"A" is advanced and "O" is not a "O" but should be "ZERO" for top dead
center. there should be a few tiny "hash marks" between the A & 0 for
degrees of advance too.
that should be the 292 truck variant of the 250 cu.in. GM straight 6.
there is yet 1 other remote distant chance the rubber hose between the
tank's fuel sender and the hard line running up the frame is colapsing
under suction too, but that is very rare. i'm leaning more towards 39
years of acumulated silt in the tank clogging the OEM tank filter.
chuck.
390,000 miles on my 79 chevy van AND COUNTING!
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