hard starting when cold weber on F-134

My 57 FC-150 came with a Weber on it from JC Whitney installed by the po. Starting it in cold weather takes patience. Pull the choke out and engage the starter and pump the gas twice. I crank it for 10 seconds, pump the gas twice again and crank for 10 seconds. Sometimes I have to wait for the starter to stop spinning! Finally it will pop once or twice and die. I continue the pumping and cranking and it will catch. I can't touch the gas or let out the clutch ( trans in neutral ) in the first 20 seconds or it stalls. Slowly I increase the RPMs. If I can do that I may be able to get it moving as long as I'm in 4 wheel low. The length that it takes to start it is directly related to how cold it is. Once warmed up warmed up it runs find. In the summer it starts right up.

Any suggestions?
Thanks!

 

I'm sorry it's taken so long to reply but, I just don't get very cold weather all that much and, I just haven't had as severe probs as you. It's cooled to +30°F now and I have been thinking of your situation.
I have my Weeber adjusted as lean as it will go at idle and the idle speed so it just barely runs (when warmed fully).
I pump the gas twice, full choke, hit the starter (no throttle). It usually starts and keeps running. It always starts. But as you describe, it may die in the cooler weather. From there on, re-starts need more full choke and gas pumps.
Your description of popping, etc, signals a fuel starved condition to me.
Just for giggles, I'd try 6 pumps, a bit of hand throttle, and full choke to start in COLD weather.
You could try richening the idle mix screw somewhat for the winter and may find it better starting, but I really don't know.

 

Homebrew, Thanks for your reply. Nice to know I'm not the only one. We have a 50* day today and it started right up with full choke and one pump of the gas pedal. After that it runs great. I wonder if some where on the web there is a person or business that specializes in Webers that be of help.

 

I really don't let mine "warm". All I do is wait for oil to come up upon initial start then, add throttle to kick in the alternator, ~1k rpm's and set the vernier hand throttle there. Once ammeter comes back to 0, I drive it, with about 1/2" chike (measured at the dash) ... no more than 1-2 minutes.

On another thought, I have been in contact with another member that had severe probs with his new Weber ... after MUCH messing around, he found crud in the carb ... yeh, in a brand new factory carb. Once the crud was removed, all was good.

 

When it is really cold, like 10*, I hold the clutch in because even the oil in the tranny will stall the motor. I'm going to check the web for Weber rebuilders.

 

I just found this website: http://www.racetep.com/ These people I think are the USA distributor for Weber and they sell carbs, conversion kits, part and have some tech information as well.

 

Homebrew2 is correct.

If are having problems starting in cold weather, you should pull the idle jets and check for junk in there and also check your settings on idle speed and fuel mix screws. Your problem could be as simple as turning the mix screw out a little.

Check out some of the weber technical docs like these if you have the 32/36:

http://webernorthamerica.com/pdffiles/webertroubleshootingguide.pdf
http://webernorthamerica.com/pdffiles/INS-WK551.pdf

Lee

 

That's fantastic! Thanks 53willysM38A1 and everyone else who contributed. I'll let you know what I fine.