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F150 2.7 ecoboost misfire

ssbuckmarkrifle

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U.S. Military - Active
Joined
May 25, 2022
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Location
Arkansas
Vehicle Year
2016
Make / Model
Ford F150
Transmission
Automatic
Have a 2016 f150 2.7 ecoboost. Started throwing codes for multiple cylinder misfire, and cylinder 1 & 5 misfire. Have replaced all the plugs with mastercraft plugs gapped to 28, and replaced cylinder 1 & 5 coils, still throws codes. Has a slight idle shudder. Runs and cruises fine. But randomly will throw all three codes at once typically at highway speeds. Intercooler has been drilled at the bottom. Looking for suggestions, and any help is much appreciated.
 


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Blmpkn

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Feb 15, 2020
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Location
Southern maine
Vehicle Year
2021
Make / Model
Ford ranger
Engine Type
2.3 EcoBoost
Engine Size
2.3
Transmission
Automatic
2WD / 4WD
4WD
Total Lift
2.5" level
Tire Size
255/75/17
"Intercooler has been drilled"?
 

ford4wd08

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Location
Alcoa, TN
Engine Type
2.8 V6
Transmission
Automatic
2WD / 4WD
4WD
Have a 2016 f150 2.7 ecoboost. Started throwing codes for multiple cylinder misfire, and cylinder 1 & 5 misfire. Have replaced all the plugs with mastercraft plugs gapped to 28, and replaced cylinder 1 & 5 coils, still throws codes. Has a slight idle shudder. Runs and cruises fine. But randomly will throw all three codes at once typically at highway speeds. Intercooler has been drilled at the bottom. Looking for suggestions, and any help is much appreciated.
There is a TSB on 2016's 2.7's. I believe the exhaust valve or similar fails.

Happened to mine and I got two new cylinder heads from Ford for it.

Mine was a bad misfire and it made the check engine light and all blink. I had to limp it to the dealer.

Yours might not have that issue, just saying do some research.

Smoke out of the tail pipe is a sign.

Might be a little extreme, but could be your issue.
 

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