Questions & Answers for: Yamaha YZ 450 F how to clean well pipe

...sounds like it's running too lean, could be **** in the carb starving it of fuel. remove air cleaner and spray a bunch of carb cleaner in and let it sit overnight, or take carb off and strip

...pipe was red hot and melting the plastic air filter case... Any thought as to why? This has never happened before. Hello, Actually your exhaust, at the head, will glow red when the bike warms up - ...

...it was backfiring on deceleration. it blew a 5 inch hole in the header pipe. i purchased a new one, cleaned the air filter, changed the oil and put a new spark plug in it. now it is still backfiring ...

...pipe at 85degrees and 500 to 1000 elevation Hi, Bdunlap216 if your fuel system (gas tank, filters, fuel valve and carburetor) is contaminated with ethanol sludge, varnish, rust, dirt, water etc. or ...