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Weird thing happened the other day
#1343689 01/26/2020 2:09 AM
Joined: Dec 2019
Posts: 36
North Jersey
F
Fiddlerpin
Offline
Wrench Fetcher
Fiddlerpin
Wrench Fetcher
F Offline
Joined: Dec 2019
Posts: 36
North Jersey
I was driving my 56 3100 the other day for about 15 minutes and the truck just died. It has it's original 235 6 cylinder engine. I sat on the side of the road and tried to start it. Would not start. I pulled the choke all the way out and it started. When I pushed the choke in it died. Managed to get home with the choke pulled out. Took the carb off and took the top cover off. To my amazement the power piston was jammed in its cylinder. I loosened it up and pulled it out, sanded it with fine sandpaper and cleaned out the cylinder and fine sanded it as well. Made sure it moved freely and reinstalled the cover. Started the engine and it ran great again. So if this helps someone with the same problem that will be great.
Re: Weird thing happened the other day
Fiddlerpin #1343716 01/26/2020 4:39 AM
Joined: Jun 2011
Posts: 5,096
Longmont, CO
E
EdPruss Offline
Crusing in the Passing Lane
EdPruss
Crusing in the Passing Lane
E Offline
Joined: Jun 2011
Posts: 5,096
Longmont, CO
My float occasionally sticks in my 503 and I have to run it on the choke, too.

Ed

'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: Weird thing happened the other day
Fiddlerpin #1343817 01/27/2020 1:19 AM
Joined: Mar 2010
Posts: 10,298
Virginia
5
52Carl Offline
Renaissance Man
52Carl
Renaissance Man
5 Offline
Joined: Mar 2010
Posts: 10,298
Virginia
Once 10% ethanol formula gas begins to eat a tiny hole in the accelerator pump diaphragm of my Carter Y2100, I pull out the throttle cable to open the throttle far enough to burn the extra fuel getting dumped in so that I can make it home.

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission

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