Diesel Data: Automotive Repair

Diagnosis By Symptom

TROUBLESHOOTING HINTS

Engine cranks, but does not start
1. Spark is insufficient or does not occur at all (on spark plug).
^ Check ignition coil.
^ Check crankshaft position sensor (with a built-in distributor).
^ Check ignition power transistor.
^ Check spark plugs.
^ Check spark plug cable.
2. Spark is good.
^ Check ignition timing.

Engine idles roughly or stalls
^ Check spark plugs.
^ Check ignition timing.
^ Check ignition coil.
^ Check spark plug cable.

Poor acceleration
^ Check ignition timing.
^ Check spark plug cable.
^ Check ignition coil.