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I just rebuilt my carb and now the accelerator pump leaks.
The bonehead that rebuilt it last used a bolt that was 1/8" too long and spun out the threads on a bottom bolt of the cover, so I had to tap it deeper to get the stupid screw to catch. Now I get this little drip of gas off the bottom of the carb.
OK, I fiddled with this thing and tried everything to stop it, but it still drips a little bit. My concern is: how safe is this? Is this going to start a huge blaze under my hood going down the highway, or will it just evaporate when it hits the manifold?
I am sick of messing with it, to be honest. The carb works great aside from this drip...truck runs awesome.
Should I be worried about it??
BDV
I would really recommend not running it this way. Which way did you put the gasket in? IIRC, the gasket has to go above the diaphragm- hope this helps.
There is only one way to put the diaphragm in, and it has an integrated gasket.
And I got to thinking (which I am capable of at odd moments...) and I realized that it dripped when I operated the pump manually. So I had my girl hop in and rev the motor, and then hold it at half throttle, and the drip almost disappeared. I say almost because it still dribbled a teeny bit, but not nearly as much as when I was pushing the lever by hand, which was over-pressurizing the pump.
I should have mentioned that it leaked before I rebuilt the carb, and it leaked worse than it does now, by a good margin (it used to fill up the depression in the manifold by cylinder 1). The truck has never caught fire before, so I am not super concerned given the small amount that is leaking now.
Is there anything I could smear on that gasket that would seal it better without getting eaten by the gas??
BDV
I think I would either get a new carb or , you may be able to get some J'B weld and smear it in the holes then let it set up and drill and tap it to the correct size and that should stop the problem. Other then that I can't think or of anything that would stop the leak....oh ya maybe use the old pump gasket ( cut the pump out and just use the edge, around the pump) to give the pump a better seal..
I wouldn't want to run with a fuel leak at all. I assume this is a Holley. I would just remove the front bowl (4 screws and the fuel fitting) and either drill and tap the stripped hole or have a heli-coil installed. A machine shop would do this in about 5 minutes.
What kind of Holley is it? I have a bunch of old carbs and parts laying around. I'll send you a new bowl if you want to pick up the shipping.
It's not a Holley, it's a 1.33 2100.
And I tried the double gasket thing but the stripped screw wouldnt catch the new threads I cut, so it wouldn't work.
Forget it. The next time a tool touches this carb will be when I remove it to replace it. The carb works great until I need it to, then it craps out. I had to push the truck 2 blocks today because I pulled out of the gas station and it died because the float stuck. I don't like being stranded...
What type of 2 bbl do you guys recommend for a 352?
BDV
either a 350 cfm , or if you want alittle more punch then go with a 500 cfm holley 2 bbl , either way both carbs will be a improvement over the stock motorcraft . My friend runs a 500 cfm on his FE 360 and I noticed a big difference between the stock and the 500, so that may be the better choice , although the 350 MAY give you a mileage gain over the 500.
A little trick that might get you by until you can fix the problem or get a new carb.
Try wrapping some fine steel wool around the threads of the screw. Wrap just enough to allow the screw to thread into the hole. The wool will bite into any threads that might be left in the hole and on the screw. Be careful. Tighten just enough to where you think it should to the job. I have done this trick in a pinch on exhaust manifold bolt holes that have been striped out. Good luck.
Thanks, Daily. That's an excellent tip...never thought that before.
I'll remember that one next time I have a similar problem!
But I have resigned to buying a new carb. I would rather have a brand new carb anyway; I appreciate dependability.
And no, I don't carry a fire extinguisher; I'll add that to the list of reasons why I dont drive my truck right now.
Take it easy!
BDV
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