2004 Bombardier Outlander 330/400 Factory Service Manual, Page 74Get this manual
Section 03 ENGINE Subsection 02 (TROUBLESHOOTING)
SYMPTOM CONDITION TestInspection
ENGINE SUDDENLY TURNS OFFNORMAL USE7Cracked or broken pistonaCracked or broken piston due to excessive pistoncylinder clearance or engine overrevingReplace pistonCheck pistoncylinder clearance (refer to CYLINDER AND HEAD)8Check connecting rod, crankshaft, rocker arm rollers movementaConnecting rod failure due to lack of oilRepair and replace defective parts and use high quality oilbCrankshaft failure due to lack of oilRepair and replace defective parts and use high quality oilcOil contamination due to clogged oil filterReplace oil filter and oil at the same time, replace defective part(s) (refer to MAINTENANCE CHART)9Check valve springs exhaustinletaBroken valve spring damages the cylinder head, valve(s), rocker arm(s)pistonReplace defective part(s) and do the valve adjustment10Check for water intrusion through intake system into combustion chamberaWater in intake system andor combustion chamberReplace defective part(s)