My 1978 Trojan has a rough running 318 with Carter AFB. Sometimes, but not all the time the starboard 318 will start rough, spit carbon and unburned fuel. If I can keep it running until if warms up it starts to smooth out. Somtimes reving it up quickly for a second will blow out more carbon and fuel and that helps settle it down. Here is what has been done. Fuel filter and fuel water separators were clogged but have been changed. I buy fuel at a premium and it is advertised as no or very low ethanol by the yacht club. Engine was tuned, spark plugs, distributor cap, plug wires and I had the Carter AFB rebuilt.
Before Tune up boat was not getting RPMs on the lake under load, maybe 2000, other engine was running fine. After carb was rebuilt engine ran great on lake, but now i am crapping out coming into dock and at startup. Could it be in choke or choke pull off or the distributor. Any help or advise would be appreciated. The boat is in freshwater in the western basin of Lake Erie.
Before Tune up boat was not getting RPMs on the lake under load, maybe 2000, other engine was running fine. After carb was rebuilt engine ran great on lake, but now i am crapping out coming into dock and at startup. Could it be in choke or choke pull off or the distributor. Any help or advise would be appreciated. The boat is in freshwater in the western basin of Lake Erie.