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 MANUALSACURA1994INTEGRA (GS-R) L4-1797CC 1.8L DOHC (VTEC)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTUNE-UP AND ENGINE PERFORMANCE CHECKSSPARK PLUGTESTING AND INSPECTION
1994 Acura Integra (GS-R) L4-1797cc 1.8L DOHC (VTEC)
Spark Plug: Testing and Inspection
1994 Acura Integra (GS-R) L4-1797cc 1.8L DOHC (VTEC)SECTION Testing and Inspection
Spark Plug Inspection:
1. Inspect the electrodes and ceramic insulator for:
Burned or worn electrodes may be caused by:
- Advanced ignition timing
- Loose spark plug
- Plug heat range too low
- Insufficient cooling
Fouled plug may be caused by:
- Retarded ignition timing
- Oil in combustion chamber
- Incorrect spark plug gap
- Plug heat range too high
- Excessive idling/low speed running
- Clogged air cleaner element
- Deteriorated ignition coil or ignition wires
2. Adjust the gap with a suitable gapping tool.
Make sure that the 1.3 mm (0.051 in) plug gauge does not go into the gap for the platinum tip plug. If the gauge goes into the gap, do not attempt to adjust the side electrode; replace the plug with a new one.
3. Replace the plug if it is fouled or worn.
4. Apply a small quantity of anti-seize compound to the plug threads.
5. Screw the plugs into the cylinder head finger-tight, then torque them to 18 Nm (1.8 kg-m, 13 lb.ft).
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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.