Help with hesitation

[tom'sB2B]

Hi Everyone

I'm hoping to get some help with my hesitation problem. Everytime I eccelerate it hesitates to the point of stalling unless I nurse the accelerator slowly. Where do I start in diagnosing this problem?

I changed the fuel filter. It has new points, condenser, cables, plugs and coil.

I thought about adjusting the float, but I haven't found a thread on how to do that.

Any help to put me on track would be appreciated

Tom

[Don Coatney]

Sounds like your accelerator pump is not working. Pull the top of the carburetor and remove the accelerator pump. Soak the leather piston in oil overnight and re-install the next day.

[Don Coatney]

Found another picture. The accelerator pump is located below the spring shown on the right side of the pictured carburetors.

[tom'sB2B]

Great! I will check that out. Thanks for the help

[Young Ed]

Tom if it looks beat up I have the napa part # at home for a new one. Otherwise if you order a carb kit you'll get a new one that way too.

[Larry Butler]

could it have anything to do with the built in dashpot? My B3C has fluid drive and my mechanic says the dashpot leather in the carb has disintergrated & thinks that might be the problem.

I appoligize if this has nothing to do with the subject at hand - I'm early in the learning stage on all this. This forum has been a terrific learning tool!

Larry

[DollyDodge]

my B-2-C does the same thing since I got it going, it has a new carb kit installed with a new accelerator pump. It isn't real bad, but if I push quickly down on the acceleartor the engine hesitates, it won't stall, but it will pause for a second. I have tried everything I can think of but it still does it. Runs great other wise.

[Young Ed]

How many miles do you have on it? My 46 did this at first too. I messed and messed with that carb. Bought a second kit etc and never fixed it. Finally I just gave up and lived with it and it got better. It is my theory that the accelerator leather had to seat to the bore.

[Merle Coggins]

I had the same problem when I first got my truck running. I had rebuilt the carb during the engine overhaul. I found that the accelerator pump wasn't spraying like it should when the throttle is opened. I disassembled the carb again and soaked the pump in a cup of oil to soften up the leather. I also cleaned out the passages that lead up to the nozzle. When I put it all back together again it sprayed a good abount of fuel. My hesitation was much better, but it started to come back again. I then found that my points were out of adjustment, which also caused the timing to be off. I readjusted the points and timing and now it runs perfectly.

Merle

PS. as for the built in dashpot mentioned earlier, that wouldn't cause a hesatation. That item limits the throttle from returning fully to idle upon initial release of the pedal. I have mine adjusted so that it doesn't do anything and I don't notice any issues.

[DollyDodge]

sounds good, I will need to look at the points. The carb seemed to be fine. I only have a couple hours on my old truck.

[tom'sB2B]

Young Ed

If you find that part number, it would be a big help. I pulled the plunger this evening and it looks pretty worn.

If I can successfully reassemble this carb, I will check the points again and cross my fingers

thanks again

[Young Ed]

CRB 24015 napaonline.com shows 5.99. Hope it helps.

[Larry Butler]

If the carb rebuild dosn't do the trick, Now I have some clues where else to look.

Larry

[Aaron]

my B-2-C does the same thing since I got it going, it has a new carb kit installed with a new accelerator pump. It isn't real bad, but if I push quickly down on the acceleartor the engine hesitates, it won't stall, but it will pause for a second. I have tried everything I can think of but it still does it. Runs great other wise.

You may want to take a look at this thread I started. Could be your vacuum pot off the distributer. I am waiting to get my rebuilt one back to see if it corrects the hesitation problem. http://www430.pair.com/p15d24/mopar_forum/showthread.php?t=21876

[tom'sB2B]

So I ended up rebuilding the carb. and put it back together today and it runs great. No more hesitation. I think though that the accelerator pump gets a little stuck. It idles a little high and if I tap on the accelerator lightly the idle will go down. Not sure how to fix that yet. Had a great cruise around Santa Cruz though.

[Merle Coggins]

So I ended up rebuilding the carb. and put it back together today and it runs great. No more hesitation. I think though that the accelerator pump gets a little stuck. It idles a little high and if I tap on the accelerator lightly the idle will go down. Not sure how to fix that yet. Had a great cruise around Santa Cruz though.

Mine does the same thing sometimes. I noticed that the linkage is rubbing against the cab floor at times. I think that may be my problem. I just haven't "fixed" it yet.

Merle

[HanksB3B]

So I ended up rebuilding the carb. and put it back together today and it runs great. No more hesitation. I think though that the accelerator pump gets a little stuck. It idles a little high and if I tap on the accelerator lightly the idle will go down. Not sure how to fix that yet. Had a great cruise around Santa Cruz though.

Ditto on the high idle. The linkage and gas pedal is not my favorite piece of engineering on our trucks. Start with the correct spring, I'd be interested to know what OEM was and far as length, diameter and tension. Maybe Vintage PowerWagons.com has a NOS part, or if someone on the forum knows they have an original one it would be good information to share. It's not rocket science I know and you can (like I did) make just about any spring work.

The other part of making the linkage work properly is to use a good quality grease and assemble each pivot point with the best fitting washers and correct diameter cotter pins that produce a joint that doesn't twist.

Hank

P.S. Glad you solved the major problem