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Old 11-10-2019, 07:19 PM   #1
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P1316 and P0304 Flashing CEL Boxster

Getting both P1316 and P0304 and a Flashing CEL and can defiantly feel a misfire. I guess my plan of attack is to start with Spark plugs. Anyone else have any suggestions?

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Old 11-11-2019, 03:03 PM   #2
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Getting both P1316 and P0304 and a Flashing CEL and can defiantly feel a misfire. I guess my plan of attack is to start with Spark plugs. Anyone else have any suggestions?
Both Codes are for cylinder #4 misfire.
Could be:
A fouled plug.
Oil in the spark plug tube causing spark to short to ground
Bad coil
issue with wiring to coil
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Old 11-11-2019, 03:55 PM   #3
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Getting both P1316 and P0304 and a Flashing CEL and can defiantly feel a misfire. I guess my plan of attack is to start with Spark plugs. Anyone else have any suggestions?
Don't be so defiant, and just accept the fact that you're throwing some codes that likely and easily can be resolved. Replace the plugs... check the boots and tubes... all of them while you're in there and on both sides. You shall overcome.

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