
2011 Ford F-150 XL 5.0L Spark Knock
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...
FIX posted 11/6/2018
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Message Closed w/FIX
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VIN | 1FTFW1EF4B |
Engine | 5.0 L / 8 cyl / FLEX |
Trans | 6-speed Automatic (Electronic) |
Delivery | Fuel Injection / Port |
Emissions | OBD-II Compliant |
Symptoms | Spark Knock |
Occurs | On Accel |
Message Closed w/FIX
Vehicle Data
2011 Ford F-150 XL
VIN | 1FTFW1EF4B |
Engine | 5.0 L / 8 cyl / FLEX |
Trans | 6-speed Automatic (Electronic) |
Delivery | Fuel Injection / Port |
Emissions | OBD-II Compliant |
Symptoms | Spark Knock |
Occurs | On Accel |