new carb complications ,1951 F1 truck
 

Good morning. a complication with a new Carpenter carb.
my 51 truck runs well after an engine rebuild ,the problem I had was when pulling away the carb fluffs and sometimes stalls ,I fitted a new accelerator pump from a carb rebuild kit but still the same ,after stalling when pulling into a busy road I invested in a new carb from Carpenter ,my fault but I discovered the carb top has a ridge around it for air cleaner fit and I only had air cleaners with the straight top ,I had no option to take the carb top off my old carb (stamped ford USA 94) and fit it on the new body,it fits good and the top looks the same as the new one except the air cleaner fitting,when starting it just spins over with no attempt to fire up,the tube above the choke butterfly I assume should squirt gas when the accelerator is pushed but it doesn't ,this is not in my comfort zone so apologies if it appears a dumb question ,here in the U.K things like air cleaners are not always easy to find otherwise I would just get an alternative , any advice would be appreciated , thanks Jim.

Re: new carb complications ,1951 F1 truck
 

Just a thought, try starting and running it without the air cleaner. I had the same issue and found that my aftermarket air cleaner was restricting the air flow.
Also you may want to disconnect the fuel line from the carb and place the end of it in a container and crank the engine over a couple of turns to see if the fuel pump is working or if the line is plugged. Needless to say, be careful doing this "spark and fuel=disaster".

Re: new carb complications ,1951 F1 truck
 

37,
The tube you refer to is the bowl vent....fuel should not exit from there at any time. With the choke open and the engine off actuate the throttle arm while peering into the throat of the carb, you should see a 'V' shaped do dad BELOW the choke and fuel should squirt out of the the orifices of the 'V' ( be sure there is fuel in the bowl of course). Under the afore mentioned conditions if no fuel squirts out then it is possible
that the ball check at the bottom of the acc pump bore is missing or not seated (it's
held in place by a dinky wire ring). Digging deeper there is a rudimentary check plun-
ger beneath the 'V' referred to earlier. I've had a few of the new carbs such as yours
for repair and found the plunger missing or not seating. Just like the little ball check in the bottom of the acc pump well this plunger must seat or the squirt will be compromised. My hi tech method of seating these things is a gingerly yet cautious tap
with a tiny hammer and small punch
The final and most obvious thing to look for is the link that ties the throttle
arm to the acc pump post....be sure it has not popped out of the throttle arm. In
nearly all cases the link should be in the middle hole in the arm.
Rereading your post it is beginning to sound like a fuel delivery problem might
need addressing. Did you try pouring a bit of fuel into the carb to see if the engine
will at least try to start ?
Charlie ny

Re: new carb complications ,1951 F1 truck
 

Job done ,many thanks guys ,after I did the post I returned to the garage and took off the top of the carb and no fuel in the bowl,so I took out the float and put in a new needle and housing from my rebuild kit and connected the top to the fuel line over a container and turned it over with my wife holding the container ,and it squirted out ,now got a nice running throttle responsive engine, cant be more pleased , many thanks again , cheers Jim.

Re: new carb complications ,1951 F1 truck
 

Thanks for the update. Glad you got it going.

Re: new carb complications ,1951 F1 truck
 

That top with the "V" ridge-type casting to hold the air cleaner is correct for a truck. Sounds like you introduced problems when you switched out tops!