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'99 F150 4.2L Backfire through Intake
I have a 1999 Ford F150 with the 4.2L engine in it. The engine was rebuilt less that 4000 miles ago by a separate shop. The spark plug wires are installed correctly, The spark plugs, wires, and coil are new. The EGR ports and intake have been cleaned and the v... Login to read more. ![]()
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| Engine | 4.2 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1999 Ford F-150 4.2L
| Engine | 4.2 L |
| Trans | 4-speed Automatic (Electronic) |

20 Replies Received
20 Replies Received