2013 Polaris rzr 800 s starts bustn up around 4500rpm,had diagnostic testn,check sensors,replaced crankshaft position sensor,throttle position sensor,vane sensor,idle air control sencor,chk coil plugs,plug wires,not pulln no codes.been workn on this unit for few months.fuel pressure 41 to 42 running,would appreciate any info r suggestions,thanks
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