Cylinder 2 Pressure Variation Low

Common symptoms

What you'll notice

• Perform a compression test on cylinder 2 and repair any internal engine damage.
• Inspect and clean fuel injectors for cylinder 2.
• Check ignition system components (spark plug, ignition coil, wires) for malfunction and replace if necessary.
• Verify proper fuel delivery to cylinder 2, including checking the fuel pressure regulator and fuel pump.
• Check for any vacuum leaks in the intake manifold that may affect cylinder 2 and repair as needed.

Common causes

Most likely first

1. Faulty fuel injector in cylinder 2
2. Spark plug malfunction in cylinder 2
3. Low compression in cylinder 2
4. Vacuum leak in the intake system of cylinder 2
5. Faulty ignition coil in cylinder 2

How to diagnose & fix

Work through it in order

1. Rough idling or uneven engine running
2. Engine misfires or stumbling on acceleration
3. Lack of power or reduced engine performance
4. Increased fuel consumption
5. Illuminated check engine light