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.
Chart A-3, Engine Cranks But Will Not Run: Notes
Before using this chart, ensure battery condition, engine cranking speed and fuel quality have been checked.
When ignition is turned to ON or START position, main relay applies battery voltage to ignition coil. If ignition coil's primary coil is being toggled to ground through ignitor, sending a signal to ECM, a high voltage is induced in secondary windings of ignition coil and is applied through distributor to spark plugs.
- Checks for any trouble codes stored in ECM memory.
- Checks for spark at ignition coil.
- Checks for spark at distributor.
- Checks for spark at spark plugs.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.