Club Car FE350 2005 Maintenance Service Supplement page 114

13
FE350 ENGINE
Spark Plug Removal
See General Warning, Section 10, Page 10-1.
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CAUTION
• Before removal and disassembly, clean the engine.
Remove all dirt from plug base in the cylinder head before removing plug. Use a 13/16-inch deep well socket
wrench or 13/16-inch spark plug wrench to loosen the plug.
Spark Plug Cleaning, Inspection and Repair
Examine the plug (Figure 13-1, Page 13-2). The deposits on the plug base and electrode are an indication of
the correct heat range and efficiency as well as a guide to the general condition of the engine, fuel and air mix-
ture and ignition system. If all of the above conditions are proper, the spark plug should be a light brown color.
There should be no bridging between the electrode and base. The electrode should not be eroded. Black
color, excessive carbon, and/or a wet plug indicate a too rich condition. White, burned or melted electrodes
indicate a too lean condition or pre-ignition. Oily deposits on the plug electrode are an indication of worn rings,
valve guides, cylinder wall, etc. Also examine the spark plug wire. Remove rubber boot and inspect internal
spring for damage. Inspect spark plug wire for damage and be sure spring coil is securely attached to spark
plug. See following WARNING.
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WARNING
• Remove spark plug wire to avoid accidental start up of the engine when servicing vehicle. To
avoid ignition of fuel and serious personal injury or death, never try to start the engine with
plug removed from engine.
Figure 13-1 Spark Plug
Testing the Spark Plug
Check the sparking ability of a cleaned and properly gapped plug on a sparking comparator if possible. Spark
should be blue and strong and able to jump a 5/16-inch (8 mm) gap.
Page 13-2 2005 FE350 Gasoline Vehicle Maintenance and Service Supplement
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General Information