Hey all, this pertains to my:
'56 2E-12 3/4 ton pickup with factory auto trans.. stock Stromberg WW 6-117 with the 90* "backdraft" style air intake.. (as shown in Group III, page 31 of the service manual)
the background here is that the truck would start up and idle just fine, and was able to revv up so long as there was some choke on. Once it reached operating temp however, it would fall on it's face as soon as you cracked the throttle.
Previous owner suspected the accelerator pump.
The other night I took it off the truck, opened up the top and sho-nuff, no spritzing action at all from the accelerator pump.
further investigation showed that I was missing BOTH check-balls in the circuit. and, oh joy of joys, they are actually included in the rebuild kit!
Last night I plopped them in.. and STILL NOTHING!
well, a different sort of nothing I should say.
If you can open this vidayho, it shows the problem:
https://photos.app.goo.gl/QfxwkrtWVsezfa9L6
If you can't see it, what's happening is that if I have the accelerator pump jet nozzle assembly off, you can see gas spurt out easily.
once I cinch it down however, it's locked up tight. can't even push the plunger down.
crack the jet loose a bit and you can see gas spurt out around the gaps.
so, it seems like when the jet is tightened down, it's locking up the check-ball in there. And no, there's no 2nd ball caught in there that my eyes can see.. and there no detrius for things to hang up on that I can see. I even took a small punch and very lightly gave it a tap to see if it needed to be seated harder down in there. Same results.
So here's the $64,000 question.. do I have the wrong jet or something? did someone put one in that's too long? or is the ball too big? what gives?
I'm at my witts end here!


Cheers,
Brian
'56 2E-12 3/4 ton pickup with factory auto trans.. stock Stromberg WW 6-117 with the 90* "backdraft" style air intake.. (as shown in Group III, page 31 of the service manual)
the background here is that the truck would start up and idle just fine, and was able to revv up so long as there was some choke on. Once it reached operating temp however, it would fall on it's face as soon as you cracked the throttle.
Previous owner suspected the accelerator pump.
The other night I took it off the truck, opened up the top and sho-nuff, no spritzing action at all from the accelerator pump.
further investigation showed that I was missing BOTH check-balls in the circuit. and, oh joy of joys, they are actually included in the rebuild kit!
Last night I plopped them in.. and STILL NOTHING!
well, a different sort of nothing I should say.
If you can open this vidayho, it shows the problem:
https://photos.app.goo.gl/QfxwkrtWVsezfa9L6
If you can't see it, what's happening is that if I have the accelerator pump jet nozzle assembly off, you can see gas spurt out easily.
once I cinch it down however, it's locked up tight. can't even push the plunger down.
crack the jet loose a bit and you can see gas spurt out around the gaps.
so, it seems like when the jet is tightened down, it's locking up the check-ball in there. And no, there's no 2nd ball caught in there that my eyes can see.. and there no detrius for things to hang up on that I can see. I even took a small punch and very lightly gave it a tap to see if it needed to be seated harder down in there. Same results.
So here's the $64,000 question.. do I have the wrong jet or something? did someone put one in that's too long? or is the ball too big? what gives?
I'm at my witts end here!
Cheers,
Brian
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