Took my '15 F S V6 into my local guy ....Rough idle, severely reduced power & CEL. Throwing codes for number 4 cylinder misfire. Replaced coil pack, cleared codes. Drove beautifully for a full 70 miles. Same symptoms & CEL reappear,...this time #5 & #6 misfire.

So, went ahead and had them replace all coil packs and plugs...$1,049. After a road test of 14 miles....#4 cylinder misfire.

Fuel injector? 02? Wiring harness? Vacuum leak?

Looking for thoughts from those far more intelligent than myself. The current shop has basically put their hands up in the air and said that it needs to get taken to a specialist. I think it's a bunch of BS, but I'm taking it to another indie this coming week after the holiday weekend.

Purchased this car with a PPI and thorough history about 1.5 years ago and since then have put nearly $10,000 in repairs into it. It's exhausting and more than likely this is it for me. Regardless, it needs to be fixed accurately before my moral compass will allow myself to pass it on to a buyer.

So again, looking for thoughts from anyone anyon e on possibilities AND if anyone has an estimate on cost.

Thanks in advance and will follow up.

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Sure case of a bad injector ,it will throw all kinds of misfire codes, watch this video series

 

Thanks for the reply. Currently with a Euro specialist. We shall see.