Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE1993COLT L4-1468CC 1.5L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMSPARK PLUGADJUSTMENTS
1993 Dodge Colt L4-1468cc 1.5L SOHC
Spark Plug: Adjustments
1993 Dodge Colt L4-1468cc 1.5L SOHCSECTION Adjustments
1. Disconnect spark plug cable from the spark plug. If the spark plug cable is removed by pulling on the cable, it may be damaged.
2. Using a plug wrench, remove all plugs from cylinder head.
CAUTION: Use care not to allow foreign matter to enter through plug holes.
3. Check the spark plugs for the following:
^ Broken insulator
^ Worn electrode
^ Carbon deposits
^ Damaged or broken gasket
^ Burnt condition of porcelain insulator at spark gap.
NOTE: Dark deposits indicate too rich a fuel mixture, light (white) deposits indicate too lean a fuel mixture, advanced ignition timing or insufficient plug tightening
4. Check plug gap using a plug gap gauge and adjust if necessary.
Standard value: 1.0 - 1.1 mm (0.039 - 0.043 in.)
5. Tighten spark plug to specified torque. If overtorqueing occurs, damage to threaded portion of cylinder head might result.
Spark plug torque: 20 - 30 Nm (15-21 ft lb)
2. Using a plug wrench, remove all plugs from cylinder head.
CAUTION: Use care not to allow foreign matter to enter through plug holes.
3. Check the spark plugs for the following:
^ Broken insulator
^ Worn electrode
^ Carbon deposits
^ Damaged or broken gasket
^ Burnt condition of porcelain insulator at spark gap.
NOTE: Dark deposits indicate too rich a fuel mixture, light (white) deposits indicate too lean a fuel mixture, advanced ignition timing or insufficient plug tightening
Spark Plug Gap:
4. Check plug gap using a plug gap gauge and adjust if necessary.
Standard value: 1.0 - 1.1 mm (0.039 - 0.043 in.)
5. Tighten spark plug to specified torque. If overtorqueing occurs, damage to threaded portion of cylinder head might result.
Spark plug torque: 20 - 30 Nm (15-21 ft lb)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.