ORIGINAL: maynardrupp
Thanks everybody. I did buy one of those 1 way valves for the vent line, but logic now tells me that the vent line should never have fuel in it unless you are upside down and the engine quits. If that happens we have other concerns than worrying about a bit of fuel spilled through the vent line. I did back the pressure screw off 1/2 turn and I now feel that may have been a mistake as the engine wants to run lean even when I richen it some. I am now able to trail a bit of smoke but only after richening the high speed needle 2 turns from where I had it before the pump instal. The pump does work fine though. I just am not sure whether to increase the pressure or not.[&:]
I had a perry pump and a os 1.20 ax and I needed to almost close the HS needle just to run w/o getting rich...
I then added a T-line so that it would not be soo rich.
This led to a Non-responsive HighSpeed Needle....
I Believe, I ended up with my head gaskets seizing to the head....Not a good.
I ended up getting a replacement....
I then ran a tuned pipe and header... I am currently having issues with it being either lean, or rich...
sometimes rich, to lean... as it goes through the fuel tank....
I may try the perry pump again.
I know the real issue is the OS CARB....THe barrel is too large....
PITA, if you use nothing but the stock muffler...
I hope your results are better than what I had when I 1st tried it....
Perhaps I was too worried about the HS needle only 1turn out...???