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1997 Ford F-150 4.2L Poor Idle Quality, Hesitation, Misfire
hesitating and backfiring off idle acceleration, came in with fuel trims LT +17% bank 1 and -15% bank 2 so I swaped injectors bank to bank with no change, I smoke tested intake and found intake runner shafts leaking vaccum at back end, then i installed another...
FIX posted 10/15/2009
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Related Documents & Media | VIN | 1FTDF1721V |
| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Hesitation, Misfire |
| Occurs | Under Load, on Accel |
| Misc. | 4.2 Pushrod V6 |
Message Closed w/FIX
Vehicle Data
1997 Ford F-150
| VIN | 1FTDF1721V |
| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Hesitation, Misfire |
| Occurs | Under Load, on Accel |
| Misc. | 4.2 Pushrod V6 |
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