Cylinder 6 Pressure Too High

Common symptoms

What you'll notice

• Inspect and replace faulty or damaged fuel injectors.
• Check and clean the fuel pressure regulator.
• Test and replace the ignition coil for cylinder 6.
• Ensure proper fuel delivery by inspecting and replacing the fuel pump if necessary.
• Check and adjust the engine's timing as needed.

Common causes

Most likely first

1. Faulty fuel injector for cylinder 6
2. Faulty ignition coil for cylinder 6
3. Faulty spark plug for cylinder 6
4. Restricted fuel injector for cylinder 6
5. Engine tuning issues

How to diagnose & fix

Work through it in order

1. Engine misfires or runs rough
2. Decreased fuel efficiency
3. Engine knocking or pinging sounds
4. Check engine light illuminated
5. Reduced power or acceleration