baha
+1y
Sounds like a complete tune up wouldn't hurt. How old are the plugs, wires, fuel filter, and air filter?
I'm not sure what you mean by btdc or tdc?
edit:
btdc - before top dead center
tdc - top dead center
I would go ahead and put them in the right order and then adjust the timing. I'm looking at the manual right now. I haven't adjusted the timing on a b2200 personally. I'm sure some others will chime in. But to throw this out there the Top yellow mark on the vibration damper is the timing mark scale and the timing indicator is white on the engine. There is supposed to be a label under the hood that tells you the right setting for your truck.
Do you have a timing light? One is used in the procedure but I'm sure some of the other guys know of other tricks.