Cylinder 4 - Injector Restricted

Where it lives

For P02A8, start at the injector the description names. The description of P02A8 puts it on cylinder 4.

Check these first

• A clogged or dirty cylinder 4 fuel injector
• Low fuel pressure from a weak pump
• A clogged fuel filter
• Corrosion in the injector 4 connector
• A fuel line restriction

What to do next

1. Run an injector balance test on cylinder 4
2. Check fuel pressure and replace a clogged filter
3. Inspect the injector 4 connector and wiring for corrosion
4. Check the fuel lines for a restriction
5. Replace injector 4 if the spray pattern is poor
6. Clear the code and retest

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