Carb rebuild
 

I spent 2+ days getting fuel pump and flow issues resolved with no problems until i went out saturday and started engine to find a beautiful fountain out of the rocker arm area on carb.

Anyone point me in direction of a rebuild kit for the Stromberg WW?

Re: Carb rebuild
 

I got mine off ebay

Re: Carb rebuild
 

Mike's carburetor shop has the kit. I bought one.
Sure sounds like overpressure?
Not sure what rocker arm is, accelerator pump rod hole? Not sure when "fountain" occurs. All the time, during throttle pressure or ? Flows. leaks, squirts???
You are using M20021, 4.5 PSI. Yes? Is there anything you forgot to say regarding pump/carb? Have you done ANYTHING to the carb? taken it apart or ???

Re: Carb rebuild
 

Yes, accelerator pump rod hole. 'rocker arm thingy' was best i could describe it...

Gas flows out at idle after pushing in choke lever.

nothing done to carb, new pump is m20021. psi: i have no clue...

Re: Carb rebuild
 

pics of carb leak

Re: Carb rebuild
 

I have never understood how that hole is supposed to be sealed. Maybe as the "rubber" skirt fails, on the accelerator pump, it allows that leak. There is a splash guard on that rod on the inside. Anyway, the kits are available as you can see. Go for it. Mike's Carburetor Shop has nice videos on rebuilding the WW.
Does the motor run Good?

Re: Carb rebuild
 

motor is running a bit rough, nothing terrible. sounds good after i let idle for 2hrs. then i started leaking so shut it down. it was dry for the 2 hrs though,... i attribute to 7yrs of sitting but that may be wishful thinking.

A rebuild wouldn't be a bad thing to do anyway...

Re: Carb rebuild
 

There's a full writeup with pics in my Cecilia thread of how to rebuild it (see my signature). There's a leather piece in there that cracks and gets worn out with age, or shrinks if it's dry too long.

You could also have a bad needle that isn't closing the gas line with the float. Those needles are just rubber so they wear too. There's a method of adjusting the float arm with a measuring tool, but I don't remember the particulars on it. I'd see if it works with a new needle and leather bit first.

Oh, and remember when you're torquing things back down that it's all aluminum so it'll strip out if you sneeze on it hard.

Re: Carb rebuild
 

The accelerator pump lever pivot screw is left hand thread, the only screw on the whole truck that is that way. Rotate it clockwise to loosen. Good luck.

Re: Carb rebuild
 

i have built many WW stromberg carbs over the years, and the photos that fetch has posted is the best pictorial I have seen on the basic repair of the WW stromberg. The one thing he did not do was remove the main jets because it takes a special tool to remove them w/o distorting the body of the jet. My recomendation is to soak the parts in a top quality cleaner like berryman's b-12 carb dip. Napa also has a 1 gal bucket that comes with a basket that does a great job. There p/n is 6402 Mac's. I hope i have been of some assistance in this endeavor.

Re: Carb rebuild
 

Thanks guys! ordering soon, will keep you up to date...

Re: Carb rebuild
 

UPDATE: Good, bad, uuugh-ly

Good: got the drive side wheel taken apart, repacking wheel bearings, got new brake shoes and springs, changing out hydraulic line too.

bad: replacement parts for brakes were incorrect, wait for new parts (small town delays).

uuugh-ly: started engine again and newly rebuilt carb that ran perfect 3wks before looked like a fountain of gasoline from same place as before... the accelerator pump rod hole.

Any suggestions on leak other than another rebuild of carb?

Re: Carb rebuild
 

You have a piece of trash under the needle. remove the fitting from the side of the carberator and clean out the trash that is on the face of the needle, change the fuel filter, and reassemble. the engine should run as it did for.

Re: Carb rebuild
 

Thank you but, where is this 'needle'? I'm not clear on part names...

ought was that this this a problem with one of the bearings or the float in some way, any possability there that would necessitate rebuile (again)?

Re: Carb rebuild
 

you should not have to rebuild it again. Simply put, the inlet fitting that the fuel line screws into is the needle/seat on a WW Stromberg. Remove the fuel line, unscrew the fuel filter (if Equipped) then unscrew the fitting from the side of the bowl. Clean the rubber tip of the needle(clipped to the float) and clean out the inside of the fitting where the needle inserts into it. Reverse the process to reassemble, installing new fuel filter cartridge, and tighten up all connections.

Re: Carb rebuild
 

Thank you, I will look forward to this next time I open the hood...

I know the fuel line was blown out through all areas revealing dust but after fuel flowed again, i didn't see any residue or signs of debris in the new filter. I think changing out filter and cleaning out the fuel line seat / needle is better than what i was expecting. Thanks again!