How to diagnose faulty ignition coils in a Hyundai Tucson in Pakistan?

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How to diagnose faulty ignition coils in a Hyundai Tucson in Pakistan?

I suspect my Tucson’s ignition coils are failing, but I’m not sure how to confirm this. What are the most reliable methods o r signs to diagnose faulty ignition coils in Hyundai Tucson vehicles, especially under Pakistan’s driving conditions?

Gari Specialist asked on 13 Jun 2025 18:19:36 pm

1 Answer

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Gari Master - on 13 Jun 2025 18:21:41 pm

To diagnose faulty ignition coils, technicians usually perform the following:

OBD-II scanner: Check for error codes related to misfires P0300-P0304 which often indicate coil problems.

Visual inspection: Look for cracks, burns, o r corrosion on ignition coils and connectors.

Spark test: Use a spark tester to check if the coil is producing a strong spark.

Swap test: Replace suspected faulty coil with a known good one and see if the misfire moves to a different cylinder.

Multimeter testing: Measure coil resistance and compare with manufacturer specifications.

In Pakistan, many garages offer basic diagnostic scanning however, ensure the use of proper tools for accurate diagnosis.