My truck has 360/4bbl automatic. It idles and revs smooth and quick but when I put it in gear and drive, it shudders and backfires. Vacuum advance issue? New plugs wires cap rotor. I just dont know.
Keywords:W150
My truck has 360/4bbl automatic. It idles and revs smooth and quick but when I put it in gear and drive, it shudders and backfires. Vacuum advance issue? New plugs wires cap rotor. I just dont know.
First make sure the engine is at operating temperature(180 – 220) and the choke is not closed. Then check your timing. Could be the advance, check your hoses for any vacuum leaks. A back fire would mean spark at the wrong time, so i think you are on the right track.
Comments are closed.