Hi,I have a 330 ATV quad,2005 model.it was running, then last week it started loosing higher revs and popping,showing signs of the timing been out etc, I think it was the spark plug failing as it fired up and seemed to rev OK with a new plug.
But....this morning there was a strong smell of fuel, and it took a while to start. It started and ran for a few minutes I pushed in the choke then noticed a puddle of fuel underneath so turned it off. On investigating I found that the fuel was running like a stream from the left hand pipe on the air filter box. The mixture is fuel / oil and the pipe is coming from the engine with a white plastic tube half way down the pipe which I presume is either a filter or non return valve ? My fuel tank is completely empty so presume its got into the engine and through engine pressure is getting pumped into the air box, but what is causing this and how do I fix it ??? Cheers karl