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1989 Ford F150 Timing Specs

Correct ignition timing specifications are crucial for engine performance. Timing affects many variables, including fuel economy and engine longevity. Sold for more than six decades, the F150 is a full-sized pickup manufactured by Ford Motor Company. Its engineers have determined precise timing specifications so that you can benefit from your 1989 F150 truck as much as possible.

Measuring Ignition Timing

A timing light is used to check the timing. When the motor is running, an inductive trigger signal is picked up from one of the spark plug cables, causing the light to illuminate and freeze while the spark plug fires. This helps determine the crankshaft position. Use this information for timing adjustment.

Timing Specifications

The ideal time at which the mixture should be fully burned on the 1989 F150 is in the range from 9.5 to 14.0 degrees before top dead center (BTDC) with engine running at 2,500 rpm.

Notes

These adjustments should be performed only on mechanical advance distributors. Also, when the engine is operating at high altitudes, the timing should be set to 14 degrees.