Operation CHARM: Car repair manuals for everyone.

Spark Test





1. Disconnect injectors, throttle position sensor and idle air control valve wire harness at the couplers.

WARNING:
Without disconnection of the coupler, combustible gas may come out from spark plug holes during this test and may get ignited in engine room.


2. Remove spark plugs and connect them to high-tension cords, and then ground spark plugs.
3. Crank engine and check if each spark plug sparks.
4. If no spark is emitted, inspect high-tension cords, spark plugs, ignition coil, distributor, etc.