well today i PMSL as the previous owner or the one before him had put the coil on loose? so i went to put it on then found there was washers but they were RUBBER hence no spark!!?? so this afternoon i went to see about my carb as when i took it off and tried blowing into it,,,, I COULDN'T also the carb hoses were ROCK HARD so i asked him to chuck it into a cleaner so for £10 he is going to EVERY SINGLE JET and new hoses for the carb!! so i will pick it up tomorrow afternoon, he kindly gave me a used spark plug to try i laid on the engine and the thing sparked like a sparkler at a bomb fire night!! so washers made of rubber NOT BY ME & CARB NOT TAP WAS BLOCKED!! so happy