The 2004-2005 and possibly the 2006-2007 yamaha xv17 motorcycle have a defect which causes the rear cylinder exhaust valves to stick open shortly after starting. This can cause sudden power loss requiring the operator to maneuver a stalled vehicle off a busy highway. This happens without warning. If this were to occur during a left turn from a standing stop, with the front wheel turned, the operator could loose control of the motorcycle and be seriously inured or killed. The problem vanishes when the engine is fully warmed up. Yamaha is correcting the problem by replacing the valve springs but is only doing so on a case by case basis and only after considerable argument in many cases. It appears that this problem is not unknown and not uncommon.
2004 Yamaha Road Star engine complaints
Page 2 of 2: complaints 11 to 15 of 15, newest first, as owners wrote them.
2004 yamaha roadstar midnight silverado 1700 had a defective oil pump shaft.*mr the oil pump shaft which hooks to the transmission broke resulting in an accident. Yamaha has sent two goodwill gestures to extend the warranty.
When riding the motorcycle and pulling off from a stand still motorcycle backfired and then stalls out. Owner stated that the motorcycle had been at the dealer for 22 days, but the defect still had not been resolved. Owner contacted the manufacturer, but did not get any assistance from them either.
The oil pump shaft of the consumer's 2004 yamaha road star failed. *nm
Engine stalls while warming up, running on only one cylinder.
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