Originally Posted by placidscene
I was wondering about the oil under the spark plug. I do have a hard time not cross threading it when I put it in. I guess the threads are damaged.
Good excuse to buy an upgrade... lol any suggestions?
Also could the leak at the plugs cause the 4 stroking?
The fuel is definitely coming from the carb. And I already check the float, it floats.
I had to put a repair insert in my 1956 Matchless G-80-S single 500 cc and was quite satisfied. I got it at Wholesale Tool. They are online too. It is a solid insert as opposed to a Helicoil. It come with a tap that screws into what is left of the original plug threads and digs the new thread behind the lead thread. The insert has a knurl at the top and a flaring tool to set it. The plug is used to insert the repair. It is pretty economical to buy.