TR4
Jedi Knight
Offline
Tuning in my freshly rebuilt Stromberg carbs so I went through the entire electrical part of the tune up, adjusted valves and put in brand new plugs. After setting the carbs where colortune told me, I went out for a spin. One and two cylinders show a very slight rich mix with very light soot on the plugs. Cylinder 3 plug reads a perfect mix but cylinder 4 reads way too rich with soot. Compression is 155-160 in all 4 cylinders so I don't feel it's burning oil in #4. Any idea why #4 has so much soot on the plug after a 10 mile run?