Cylinder 5 Combustion Performance

Common symptoms

What you'll notice

• Check the spark plug and replace if necessary.
• Inspect the ignition coil for any signs of damage or malfunction, and replace if needed.
• Verify proper fuel injection by checking the fuel injector for clogs or leaks, and clean or replace as required.
• Conduct a compression test to check the cylinder's overall health, and repair any low compression issues.
• Inspect the wiring and connections related to cylinder 5 for any faults or loose connections, and repair or replace as needed.

Common causes

Most likely first

1. Faulty spark plug or ignition coil
2. Issues with the fuel injector
3. Low compression in cylinder 5
4. Vacuum leak in the intake manifold
5. Problems with the engine control module (ECM) or sensor readings

How to diagnose & fix

Work through it in order

1. Reduced engine power or performance
2. Engine misfires or runs rough
3. Engine hesitation or stalling
4. Increased fuel consumption
5. Check engine light illuminates