O onlyoldiron4me New member Jun 2, 2010 #1 Hi I just picked up a Yamaha XV1000, it pops and backfires thru the exhaust, I heard it is the air pump or whatever it is in the left fake air cleaner. Which part usually gos bad, the round valve or the flat looking valve?
Hi I just picked up a Yamaha XV1000, it pops and backfires thru the exhaust, I heard it is the air pump or whatever it is in the left fake air cleaner. Which part usually gos bad, the round valve or the flat looking valve?