Question about 2006 Ford F-150

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I have a 2006 F150 .I recently had the plugs changed and fuel injectors cleaned and now I have an exhaust smell when I'm in idle, also the engine light has flashed two diferent times and misfired both times and the truck has misfired two other times going up an small incline round 50-60 mph.

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Sounds like the folks who worked on your truck didn't do as quite a thorough job. Misfiring like that could be any number of things, but having it happen after getting work done on your plugs/injectors is just too strong a coincidence to ignore.

Most likely, the new plugs weren't gapped properly or perhaps one of the spark plug wires is loose. If you feel like doing it yourself, I would begin by:

- Making sure the distributor cap is properly seated and all the wires fitting into it are completely seated, they can wiggle a little, but should not move.

- Next I would make sure the wires leading into the plugs are all seated properly.

- Last thing is you can removes the wires and the plugs and check the gaps yourself.

You could also have a loose/damaged injector, but to check for this would require you to remove the fuel rail and check each injector individually.

Make sure you keep all your paperwork and notes on conversations with the shop regarding the original repair and any subsequent repairs. They will help if you end up having to take them to small claims court.

Good Luck.

What I strongly recommend is that you take the truck back to where you got the service and complain until they fix it.

Posted on Mar 31, 2011

  • Trogs Mar 31, 2011

    Eh, Fixya did not post as I had written it. Oh well, you get the point I'm sure.

    Also, if you screw around with the distributor cap, make sure you disconnect the battery first please!

  • Lee Fisher Nov 05, 2012

    There is no distibutor on the 5.4 engines as they are individual coil packs on each cylinder right above each spark plug. This issue could be a bad coil pack. Take truck to Autozone and get a free diagnostics and it should give you a code that tells you that there is a misfire on cylinder # _. Then you can at least narrow it down.



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