68 292 single barrel carb problems

[Kapote]

OK so i have a 68 C20, it has the 292 factory motor, also has a rochester single barrel, not the unijet, the older one, and im having problems with it. Ive gone throught it twice, 1st time cuz it sat for 20 years before i got it, and now i recently did again after the winter tring to make it run right, it runs super rich, and pulses sometimes when at low rpm, makes for a not so smooth ride. im not sure the problem, any suggestions or is my timing off? what should my timing be set at with the 292 6 cyl?

[Wrenchbender Ret]

The Monojet came on the 68 but if you have the older model B I will tell you what to look for. First the base gasket must have a passageway for vacuum to reach the hole in the bottom of the carb to the inside of the manifold. If that is OK remove the air horn off the carb & make sure the power piston goes up & down freely & knocks the ball off its seat.
Set the initial timing at 8degrees. If the engine pings under load back it off a bit. Make sure the vacuum advance is working.

[Kapote]

ok ill try that thanks man!