I have a problem with cylinders 2 & 4 running lean. The plugs in 1 & 3 look good to me but 2 & 4 don't have much color to them. I have a stock 1600cc Type 1 in my Roadhawk Trike. It has dual 34 ict Webers on it with stock jetting. Has a aftermarket svda distributor with vacuum advance. Has headers with glass pack type mufflers. Timed at 32 degress full advance at 7.5 degrees at idle with vacuum plugged. I am running bosch plugs.
When I am going down the road in what I would call cruise mode it sounds fine. It does sound like it spits and sputter if I am not giving it a little gas. If it was just on one side I might suspect a vacuum leak or something but since it's on 1 & 3 I don't know. Any suggestions. Oh, I just checked the valve setting and it is ok.
When I am going down the road in what I would call cruise mode it sounds fine. It does sound like it spits and sputter if I am not giving it a little gas. If it was just on one side I might suspect a vacuum leak or something but since it's on 1 & 3 I don't know. Any suggestions. Oh, I just checked the valve setting and it is ok.