T.O.M and apalsson, The engine and plane are in fact not mine. I installed it for a friend. I said it was mine caus it was easier. I wish it were. Anyway, Upon seing what you wrote about Lawnboy, I was concerned and called the owner. He said the gas oil mix he gave me to run in the engine was in fact penziol @ 32:1. Dont know why I thought it was Lawnboy. I am glad that what ever is wrong with Lawnboy, I didnt use it. Thanks for the help.......................antiquefer.