2006-2009 Suzuki LT-R450 Service Manual, Page 384Get this manual
SERVICING INFORMATION
ELECTRICAL
Complaint No sparking or poor sparking Symptom and possible causes
1Defective ignition coils 2Defective spark plugs 3Defective CKP sensor 4Defective ECM 5Defective TO sensor 6Open-circuited wiring connections 1M ixtu re too rich
ReplaceReplaceReplaceReplaceReplaceCheck and repairInspect FI system Adjust idle air screwChange ReplaceReplace with hot type plug ReplaceReplaceReplaceReplaceReplace with cold type plugsTune upRetightenInspect FI systemRepair or replace or retightenReplaceReplaceRepair or retightenReplaceReplaceReplace the batteryReplace the batteryReplaceClean and tighten ground connectionRepair or replaceReplaceReplaceRepair or replaceReplaceRepair or replaceReplaceReplace
Spark plug soon become fouled with carbon
2Idling speed set too high 3Incorrect gasoline 4Dirty air cleaner element
5Too cold spark plugs 1Worn piston rings
Spark plug become fouled too soon
2Worn piston or cylinder 3Excessive clearance of valve stems in valve
guides 4Worn stem oil seal
Spark plug electrodes overheat or burn