carbonaccumulationontheseatingsurface)●Pistonringworn,weak,broken,orsticking●Pistonringsideclearanceexcessive●Cylinderheadgasketdamaged●Cylinderheadwarped●Cylinderbasegasketdamaged●DecompressiontroubleOther:●ECUdefective●Brakedragging●Clutchslipping●Engineoverheating●Engineoilleveltoohigh●Engineoilviscositytoohigh●DrivechaintroublePoorornohigh-speedperformance-Firingincorrect:●Sparkplugdirty,broken,orgapimproperly●Sparkplugcaporhigh-tensionwiringdefective●Sparkplugcapshortedornotcontactingproperly●Sparkplugtypeincorrect●ECUdefective●Ignitioncoildefective●Crankshaftsensordefective●Alternatordefective●WiringconnectornotingoodcontactFuel/airmixtureincorrect:●Aircleanerelementclogged,poorlysealed,ornotinstalled●Fuelcontaminatedwithwaterorforeignmatter●Fueltankcapairventobstructed●Throttlebodyassyholderloose●Aircleanerductloose●Fuellineclogged●Fuelpumpdefective186TROUBLESHOOTINGGUIDECompressionlow:●Sparkplugloose●Cylinderheadinsufficientlytightened●Cylinderboltloose●Cylinderorpistonworn●Novalveclearance●Valvespringbrokenorweak●Valvenotseatingproperly(valvebent,worn,or
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