Are you sure it's ignition? A fuel problem that lets the carb drain
out or gives a lean mixture on startup could cause this too.
Are you feeding 12 volts to the coil (bypassing the ballast resistor)
when the engine is cranking? There should be a bypass wire from
a terminal on the starter to the coil side of the ballast resistor.
Also, really dumb question, but are you using the choke? (What's
that!?) These old engines don't have automatic chokes to give a rich
mixture to start the truck. The choke is the butterfly valve on
top of the carb. It should be hooked up to a choke cable from inside
the cab that allows it to be closed when the engine is started cold.
This is one of those things that modern cars and trucks haven't
had for over 30 years and younger people either forget or never knew
about.
The Chevy inline 6's are some of the best cold starting engines ever
built. Even at 45 below, if there was enough battery to turn the
engine over, it would start.
Bruce K
57 3200
Mt Iron, MN
At Monday, 30 December 2002, you wrote:
>Hi:
>
>Dave here with my son Dusty's '50 GMC. Remember, we've got that
later model
>235 ci Six in his half-ton, all stock. Lately it's hard-starting after
>sitting a day or two. After charging the battery up, it seems to
fire up
>quite readily. But even before charging it, the motor spins long
and fast
>enough to start, or it should anyway. I'm thinking weak battery,
but maybe
>it's a weak fuel pump? Or even the stock ignition system is weak,
giving a
>less-than-idea spark for cold starts? Has anyone switched to an
electronic
>ignition system on one of these? Comments?
> Thanks!
>
>Happy holidays all.
>
>Dave
>'50 GMC
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
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