2004 Skidoo ZX Series Service Manual, Page 225Get this manual
Section 05 ENGINES (4-TEC) Subsection 01 (TROUBLESHOOTING)
SYMPTOM
ENGINE CRANKS BUT FAILS TO START
CONDITION
TestInspection
NORMAL USE 1Check if stick coil fits on spark plug (refer to spark plug)2Check spark plugaDefine spark plug (no spark) or wrong spark plug gapReadjust gap and clean spark plug or replace3Check for fuel on spark plugaFlooded engine (spark plug wet when removed)Activate engine drowned mode and crank engine with rags over the spark plug holes (refer to OVERVIEW in EMS system)4Check engine compressionaInsufficient engine compressionReplace defective part(s) (expiston, ring(s), etc5In cold weathers, check engine decompressor (located on camshaft sprocket timing gear)aCentrifugal weight spring is not engaged andor damagedReadjust spring or replace centrifugal weight if damaged6Check battery voltageaBattery is discharged and starter works not properlyCharge battery7Check fault codes in B.U.D.S systemaCheck if electrical actuator(s) isare defectiveReplace defective part(s) (refer to COMPONENT INSPECTION AND ADJUSTMENT)