Glow Plugs - Magneti-Marelli.cz

GBFault Diagnosis1Enlarged probe tipCause• Excessive voltage (e.g. 12-V Glow Plug in a24-V system or vice versa)• Failure of alternator and regulator• Dampness during storageSolution• Check on-board and Glow Plug voltage• Check charging system• Check quality of storage conditions2Broken probe tipCause• Excessive glowing / voltage (e.g. 24-V GlowPlug in a 12-V system or vice versa)• Failure of alternator and regulatorSolution• Check contacts on Glow Plug regulator• Check on-board and Glow Plug voltage• Check charging system voltage3Damaged or missing probe tipCause• Failure of ignition unit• Direction or regularity of fuel jet incorrect• Sealing fault causing spraying position errorSolution• Check the ignition unit is correctly installed• Check you are using the correct ignitionunit for the vehicle model• Check the Glow Plug installation point forcarbon deposits4Deformed probe (overheating)Cause• Failure of ignition unit• Direction or regularity of fuel jet incorrect• Wrong spraying position caused by faultysealing• Excessive glowing / voltage (e.g. 24-V Glow• Plug in a 12-V system or vice versa)• Failure of alternator and regulator• Function or timing fault in injection unitSolution• Check the ignition unit is correctly installed• Check you are using the correct ignitionunit for the vehicle model• Check the Glow Plug installation point forcarbon deposits• Check contacts on Glow Plug regulator• Check on-board and Glow Plug voltage• Check charging system voltage• Check fuel injection timing5Swollen ring on the probe tipCause• Oil in the combustion chamber, probablycaused by engine wearSolution• Check piston clearance in engine cylinders• Check oil consumption20 DENSO EUROPE BV