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1997 Ford F-150 Lariat 5.4L Poor Idle Quality
Posted to Ford Driveability on 4/9/2018 17 Replies

Customer came into shop with misfire on cylinder 7. Found broken exhaust valve due to contact from improperly installed spark plug thread insert. Replaced head with a reman unit. After installation of cylinder head vehicle runs lean 25% on one bank and ric...

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car Vehicle Data

1997 Ford F-150 Lariat

VIN 1FTEF08LXV
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / MPFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursAlways, Idle
Open Help Request

car Vehicle Data

1997 Ford F-150 Lariat

VIN 1FTEF08LXV
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / MPFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursAlways, Idle