I recently acquired an early 1983 318 with the B43G engine which has about 1800 hours on it, and I have been doing a bunch of work to it. I recently did the standard tune-up items, new plugs, wires, coil, points, condenser, all new fuel lines, cleaned out the fuel tank, cleaned a lot of the gunk and debris from the tractor, fixed leaking steering hoses, and replaced the oil in the engine and the transmission (with new filters).
I believe the 318 runs well now, before it didn't run at all. My question is in regards to when I change the throttle from Idle to Max. When its running at Idle and I increase the throttle, the rpms of the engine first goes down, and then it recovers and runs at full throttle. When the RPMs go down, its almost like its going to stall, but recovers and runs.
My question is, is this normal, or should I be looking at possibly doing something with the carb or intake? I have heard that the intakes on these leak, could it be when I increase the the throttle its getting to much air or not enough fuel to have it run smoothly?
I appreciate the time and help!
1983 318 with 1804 hours B43G