Ford 300 Inline-6 Firing Order and Distributor Diagram

How to use this specification correctly

1. 01

   Confirm engine identity from the VIN, emissions label and casting information.

2. 02

   Bring cylinder 1 to compression TDC before disturbing distributor routing.

3. 03

   Label and trace one wire, coil or injector circuit at a time, then verify with misfire data.

Exact 1996 F-150 4.9L specification

Ford's factory-service data for the 1996 F-150 L6-300/4.9L lists 1-5-3-6-2-4. The 300-cubic-inch and 4.9-liter names refer to the same familiar truck inline-six family, but the ignition and emissions hardware changed across its long production life.

The cylinders form a single row, numbered from the front accessory/radiator end toward the flywheel. Use that physical row for scan data and compression tests. Use the service illustration and the distributor's actual rotor position—not a memory-based clock-face drawing—to identify the number 1 cap terminal.

A distributor setup that preserves the diagnosis

Before removing the cap, mark the number 1 lead, photograph the complete routing and mark the rotor and housing positions. If the distributor must come out, establish number 1 compression TDC. Feeling compression or observing both number 1 valves closed distinguishes the compression stroke from the equally possible exhaust-stroke TDC mark.

Seat the distributor fully and account for rotor movement as the helical gear engages. Then route the remaining leads through 1-5-3-6-2-4 in the correct rotation direction for that distributor. Separators matter: allowing adjacent leads to lie against exhaust heat or cross sensitive routing paths can create intermittent ignition faults.

SPOUT, base timing and common false fixes

On EEC-IV applications such as the covered truck, base-timing work uses the Spark Output (SPOUT) connector so the technician can separate distributor base setting from computer-controlled advance. The under-hood Vehicle Emission Control Information label is the application authority for the exact timing value and preparation.

Do not cure crossed wires by rotating the distributor until the engine barely runs. That trades a visible routing error for incorrect base timing. Restore number 1 compression-TDC indexing, verify all six leads, then perform the applicable base-timing procedure and reconnect the SPOUT circuit.

Cylinder identification for 1996 F-150 4.9L/300 Inline-Six

Cylinders 1 through 6 are numbered from the radiator/front of the engine toward the flywheel.

Ford's application-specific service data lists 1-5-3-6-2-4. Set cylinder 1 at compression TDC and preserve the existing rotor/cap orientation before moving the distributor.