Spark plugs
![fuel-additives fuel-additives](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics_/activeIcon.img.png/fuel-additives-1573553936140.png)
Fuel Additives
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![worn-out worn-out](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics__920153958/activeIcon.img.png/worn-out-1573553936159.png)
Worn-out Spark Plug
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![ash-deposits ash-deposits](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics__492363667/activeIcon.img.png/ash-deposits-1573553936178.png)
Ash Deposits
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![pre-ignition pre-ignition](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics__117561442/activeIcon.img.png/pre-ignition-1573553936197.png)
Pre-ignition
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![corona-discharge-stain corona-discharge-stain](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics__1172727275/activeIcon.img.png/corona-discharge-stain-1573553936216.png)
Corona Discharge Stain
VIEW CAUSES
![overheating overheating](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics__671270504/activeIcon.img.png/overheating-1573553936236.png)
Overheating
VIEW CAUSES
![oil-fouling oil-fouling](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics__1529366850/activeIcon.img.png/oil-fouling-1573553936255.png)
Oil Fouling
VIEW CAUSES
![carbon-fouling carbon-fouling](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics__151472973/activeIcon.img.png/carbon-fouling-1573553936274.png)
Cold/Carbon Fouling
VIEW CAUSES
![flash-over flash-over](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics__1977452513/activeIcon.img.png/flash-over-1573553936294.png)
Flash Over
VIEW CAUSES
![detonation detonation](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics__1573655188/activeIcon.img.png/detonation-1573553936313.png)
Detonation
VIEW CAUSES
![tightening tightening](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics__366633267/activeIcon.img.png/tightening-1573553936333.png)
Spark Plug Tightening
VIEW CAUSES
![normal-wear normal-wear](/content/loc-emea/loc-eu/fmmp-champion/en_GB/technical/light-vehicles/ignition/trouble-tracers/spark-plugs1/_jcr_content/main-par/trouble_diagnostics/symptoms/trouble_diagnostics__1885140263/activeIcon.img.png/normal-wear-1573553936352.png)
Normal Spark Plug Wear/Operation
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