What are the symptoms of oil contamination in the ignition system of the Oshan X7?

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What are the symptoms of oil contamination in the ignition system of the Oshan X7?

I suspect that oil might be affecting my ignition system due to occasional rough idling and check engine light warnings. What are the typical signs that oil has entered areas it shouldnt—like spark plug holes o r coil packs—and how can I confirm this without opening the engine?

Gari Specialist asked on 12 Jul 2025 14:02:01 pm

1 Answer

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Gari Master - on 12 Jul 2025 14:03:46 pm

Oil contamination in the ignition system can be detected through both performance symptoms and visual checks.

Common signs include:

Engine misfiring o r rough idling

Check Engine Light CEL o r misfire codes P0300–P0304

Decrease in fuel economy

Hesitation o r vibration during acceleration

Visible oil on ignition coils o r plugs during inspection

How to confirm:

Remove the ignition coil and inspect the spark plug well with a flashlight

Scan for engine codes using an OBD-II scanner

Ask a trusted mechanic to perform a compression and leak-down test if the issue persists