It's running!

Discuss fixes, upgrades and modifications to your M37

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refit1701
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It's running!

Post by refit1701 »

Finally, after five years of slow-mo work, my truck was running and idling this afternoon.

Am I correct in thinking surging above idle speed is the govenor? I adjust it to the book specs when I rebuilt the carb but I suspect that the baffle plate is closing prematurely when I press on the pedal. It also stumbles, which must be the vacuum accel pump. I have heard that the plunger for the pump in these new carb kits is not the correct one, does anyone know what can be done to fix this?

Did I mention it RUNS?? :D 8) :lol:
-John
Member of Dixie Division MVC

1953 USAF M37 wow, restored
1962 M151 Ford Production, on the rotisserie now
1953 USMC M37 w/w -in storage
1942 M6 Bomb Service Truck (sold to UK collector)
1967 M116A1 Pioneer Trailer
1968 M101A1 Trailer
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w30bob
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Re: It's running!

Post by w30bob »

John,

Congrats!!! I'm sure it must be a good feeling. :D

regards,
bob
k8icu
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Re: It's running!

Post by k8icu »

Congrats! No better feeling than hearing it run for the first time....except that first drive. :lol:
M37s are HMMWV in my world!
Cal_Gary
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Re: It's running!

Post by Cal_Gary »

Way to go John!

Surging isn't necessarily the governor-mine had a worn-out civvy carb on it that surged, and once I swapped it for the ETWI the surging stopped.
Gary
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Carter
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Re: It's running!

Post by Carter »

Low flow fuel pump comes to mind, had a truck that did the same thing, checked everything else including carb float level and finally replaced the pump and problem solved. Something to think about.
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T. Highway
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Re: It's running!

Post by T. Highway »

I would check the filter first, if good check fuel pressure next.

Bert
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Engine rebuild @ 95% complete
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refit1701
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Re: It's running!

Post by refit1701 »

Thanks for the suggestions, guys. The pump is drawing from a gas can currently, as the gas tank isn't ready to be reinstalled. I backed off the govenor setting and it smoothed out, even though I had set it according to the info in the manual when rebuiding the carb. Apparently it was trying to close the baffle at a fast idle. It's better now but I have to do some more adjusting to get it all working together.

There's still a lot to do but at least I am most of the way up this mountain of a project.

:lol:
-John
Member of Dixie Division MVC

1953 USAF M37 wow, restored
1962 M151 Ford Production, on the rotisserie now
1953 USMC M37 w/w -in storage
1942 M6 Bomb Service Truck (sold to UK collector)
1967 M116A1 Pioneer Trailer
1968 M101A1 Trailer
S-89 Comm box
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