Question about 1998 Yamaha XJR 1200 SP

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Poping and rough idle on xjr1200 - 1998 Yamaha XJR 1200 SP

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Hi, Larry popping or backfiring on deceleration is usually caused by a lean fuel condition or an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build up from any joint connection. This condition can easily be remedied by removing and cleaning both joint pieces and reassembling with high temp silicone and torquing the exhaust clamp to the proper spec. Coughing is usually caused by an air leak in the intake system and will generally have the same telltale signs, a wet or damp buildup of oil/gas seepage at the intake manifold to cylinder head or carburetor to intake manifold connection and in rare instances a worn throttle plate shaft and or seals. Spitting is usually caused by a faulty accelerator pump and or nozzle, or the float bowl needle and seat leaking and overflowing through the main jet mixing well nozzle, or the air-fuel mixture screw is adjusted too lean. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Rough idle bucking at low RPMs and muffler popping
Rough idle and popping on deceleration CBR Forum Enthusiast forums for...
YAMAHA XJR1200 FACTORY OWNERS REPAIR MANUAL 1995 2006 Download Manuals...
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