Porsche 996 Turbo Spark Plug and Ignition Coil Replacement

Spark plugs and coils are responsible for igniting the compressed air fuel mixture in the cylinders.

On turbocharged engines spark plug demands are considerably higher than on non-turbo variants, which is why the 996 Turbo and GT2 should have their spark plugs replaced every 15,000-20,000 miles. Without the proper spark you could have a misfire, which will cause the check engine light to come on. While performing the spark plug replacement it's a good idea to inspect the ignition coils for cracks, and replace them if they have any cracks. I'd say 98% of the coils I have seen in my career have had cracks. It takes a fair bit of work to get in to replace the coils after the car is put back together so careful inspection of them, while in there, is important.

It is necessary to remove the rear bumper, and intercooler consoles to perform this job. Please see our articles on: Rear Bumper Removal, and Intercooler Console Removal for instructions.

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Project Time: 2 hours
Tab: $290 to $610
Tools: Pocket flat blade screwdriver, 13mm socket, universal adapter for socket, spark plug socket, ratchet, 6mm hex socket, extension, E10 female Torx socket
Parts Required: Spark plugs, ignition coils, bolts
Performance Gain: Efficient spark output
Complementary Modification: PTP turbo blanket for 996TT