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How is intermittent misfire diagnosed?

How is intermittent misfire diagnosed?

Misfires that turn on the check engine light and log a cylinder-specific fault code are the easiest to diagnose. A flashing check engine light and a P0301 to P0312 diagnostic trouble code (DTC) is a surefire indication that one or more cylinders are misfiring.

How to troubleshoot misfires in Ford Triton engines?

Unplug the connector, and test for power at both of the pins on the connector with the key on and engine off. One side should show power, and the other side show nothing. If there is no power, check the fuses for blown fuses. If power is found at the connector, have an assistant crank the engine while testing the other pin.

How many Ford 5.4 Triton engines are there?

The Ford 5.4 Triton engine has been produced in millions of units and has successfully propelled at least a dozen different car, van, and truck models.

Is there a problem with the Ford F-150 Triton engine?

Ford technicians will diagnose the problem, identify misfiring cylinder (s), and replace the spark plug and coil where needed. This problem is typical for the Ford F-150 with a 5.4 Triton engine.

What kind of ignition system does a Ford Triton use?

Ford’s Triton engines utilize a coil-on-plug design ignition system. Troubleshooting is a straightforward process of eliminating possible causes of misfire by pinpointing the misfiring cylinder and testing components until the cause is found. Identify the misfiring cylinder.

Unplug the connector, and test for power at both of the pins on the connector with the key on and engine off. One side should show power, and the other side show nothing. If there is no power, check the fuses for blown fuses. If power is found at the connector, have an assistant crank the engine while testing the other pin.

Ford technicians will diagnose the problem, identify misfiring cylinder (s), and replace the spark plug and coil where needed. This problem is typical for the Ford F-150 with a 5.4 Triton engine.

Is it possible to find a misfire in a Ford?

It’s possible to find a misfire in your Ford, even if there is no check engine light. All you need is an OBDII scanner with Mode 6 function. It is a common situation. You’re driving your F150, F250, E150 van, or Expedition, etc and you can feel the engine skipping here and there.

What causes a 5.4 Triton engine to start?

As noted above, rattles, strange sounds, and a rough engine start are the most common symptoms for timing chain, tensioner, or cam phaser problems. Blowing spark plugs with the engine running isn’t exactly what you would expect to happen often. Regardless, exactly this happened to some 5.4 Triton engines right from the start in 1997.

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Ruth Doyle