Pioneer P41 carb rebuild

[Peter Selwyn]

Hello,
I'm bringing back to life another P41 that I've got. I did a full carb rebuild including Welch plugs. I can get it to run under choke but after removing the choke, it runs for 5 seconds then seems to starve for gas. I moved the rebuilt carb to a known good P41 and the problem followed so the problem is definitely with the carb. Any suggestions on why the result carb can't suck gas?
Thanks,
Peter

 

[727sunset]

Does it respond to changes in H & L adjustments?
Did you do a vac & pressure test on crankcase?
Maybe rig up an elevated fuel supply that feeds carb via gravity and then update us on findings.

 

[Cookie]

I’ve had/have the same issue with one of my pioneers. With the low side out 2 turns it idles and is very responsive. Not sure what’s going on with it. Maybe a worn throttle valve, or not 100% clean?

 

[Peter Selwyn]

Okay so it turns out I had two problems. I put the rebuilt carb on a known good p41 and and the problem was still there. I opened the low speed jet 1/2 turn and it started to work much better. The second problem was that the gasket beteeen the carb and the reed valve was leaking.
On a side note, my wife thinks I'm crazy as I now have 4 P41's and a P50. Oh well... I'm having fun.
Thanks for the suggestions...
Peter

 

[727sunset]

Good to hear it's working for you.
Enjoy the site