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BUSY BOLTERS Are you one?  The Shop Area
continues to pull in the most views on the Stovebolt. In August alone there were over 22,000 views in those 13 forums.
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Jul 21st, 2025 | | | | Joined: Aug 2007 Posts: 3 New Guy | | New Guy Joined: Aug 2007 Posts: 3 | 1949 GMC Pickup, motor starts fine but only when choking, can not drive when choking, motor just stops. If choke is pushed off motor kills.
New fuel pump 60 days ago, truck had been running fine daily.... | | | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | Did you clean the gas tank? | | | | | Joined: Jan 2001 Posts: 5,320 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,320 | Did this come on all of a sudden?
What brand is the carb?
Sounds like you have a vacuum leak.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Aug 2007 Posts: 3 New Guy | | New Guy Joined: Aug 2007 Posts: 3 | Zenith carb.....I pumped Sea Foam directly into carb....trucks running fine right now, probably junk from tank, I removed the tank and treated and sealed a few years back.
Truck has 18,000 miles, no rust, could use a new paint job, missing nothing from top to bottom...I love the truck, but it has been a bit tempermental(sp)....
Thanks for your response, what would cause a vacuum leak, where?
Have a grateful day!
Jim
| | | | | Joined: Oct 2006 Posts: 99 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2006 Posts: 99 | What did you seal the tank with? Some sealers have problems with ethanol. That may be an old problem.
My GMC 270 was doing that, it turned out to be a vacuum leak and crud keeping the float needle open. The carb was wet with gas- leaking out the throttle plate shaft opening.
Dave
Well, my time went so quickly,
I went lickety-splitly
Out to my ol' 55.
As I pulled away slowly,
Feelin' so holy,
God knows, I was feelin' alive..... Tom Waits, Ol' 55
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