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2011 Ford F-150 XL 5.0L Spark Knock
Posted to Ford Driveability on 10/19/2018 5 Replies

No codes no driveability problems. Spark knocks under normal driving, goes away under full throttle. Fuel induction treatment to clean carbon from valves and new plugs with only slight improvement. Inferred flex fuel percentage at 40% down from 80%. Confir...

5 Replies Received (View Replies)

  Related Documents & Media  2011 Ford F-150 XL

 
Message Closed w/FIX

car Vehicle Data

2011 Ford F-150 XL

VIN 1FTFW1EF4B
Engine5.0 L / 8 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection / Port
EmissionsOBD-II Compliant
SymptomsSpark Knock
OccursOn Accel
Message Closed w/FIX

car Vehicle Data

2011 Ford F-150 XL

VIN 1FTFW1EF4B
Engine5.0 L / 8 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection / Port
EmissionsOBD-II Compliant
SymptomsSpark Knock
OccursOn Accel