2004 Bombardier DS650/DS650 Baja/DS650 Baja X Shop Manual, Page 66Get this manual
Section 03 ENGINE Subsection 02 (TROUBLESHOOTING)
SYMPTOM CONDITION TestInspection
ENGINE DOES NOT OFFER MAXIMUM POWER ANDOR DOES NOT REACH MAXIMUM OPERATING RPMNORMAL USE1Check items of ENGINE SUDDENLY TURNS OFF2Check air intake systemaAir filter is clogged due to contaminationReplace air filter3Check spark plug condition andor gapaFouled spark plug or wrong spark plug gapReadjust gap and clean spark plug or replace4Check spark plug typeaImproper spark plug heat rangeInstall recommended spark plug (refer to TECHNICAL DATA)5Perform engine leak testRefer to ENGINE LEAK TEST procedureCheck for possible piston seizureaDamaged head gasket andor seal andor leaking inletexhaust valve(s)Replace andor repair defective parts6Check for water in fuel or contaminated fuel by other products (kerosene, diesel, etcaThere is water in fuel or contaminated fuelDrain fuel system, search for leakage and refill it with appropriate fuel7Check engine compressionaWorn piston(s) andor piston ring(s)Replace (refer to CYLINDER AND HEAD)