this just happened the other day when i started it up. i had it stored away over winter because the weather is really bad over here and when you go out your either get froze to death or soaked. anyway took it to the guy at the hobby shop and he phoned someone and he confirmed that this was the problem. i left it with him over the weekend and picked it up this morning. took it outside of the shop and started it and it was working fine. mystery to me and you if ask me. hopefully this wont need another changing for a while yet.
thNKS FOR ALL YOUR HELP