Question about 2002 Ford F150 Regular Cab
2002 f150 4x4 5.4l washed engine now running rough?
The boot/pancake seal that covers the spark plug cavity gets old and lifts off of the surface of the head. This allows dust and water to invade the cavity that the spark plug is recessed into. Moisture in the engine compartment will often find its way into the spark plug cavity and short the spark to ground (misfire). Sometimes moisture will cause the COP (coil on plug) to also malfunction. If you have even one plug misfiring, it is wise to clean all the cavities and replace the spark plug boots. You will need an assortment of 1/4" wobble extensions, universal, and 7mm socket to remover the COPs. It can be done without removing the FI rails. #7 spark plug will prove to be the most difficult. You will also need to disconnect adjacent injector and COP electrical connectors (easily done). Do not despair. Visually inspect each cavity using mirrors and contortionist moves. If you see moisture and/or dirt in the cavity, you should clean it out. Get a spray bottle with rubbing alcohol and fill the cavity about half way. Let it soak a few minutes and blow it out with compressed air. Always use eye protection when using compressed air. Inspect for cleanliness and repeat as necessary. A word of advice, do not hesitate to use the aftermarket COPs. They work well and are cost far less than the Motorcraft brand.
Posted on Sep 17, 2009
Water in spark plug holes in heads!!!!! Spark is jumping through coil plug boots. Remove coil pak and dry boots, blow compressed air to dry out spark plug holes. they go straight down from fue rail. Good luck with the passenger side by fire wall. its a tuffy
Posted on Jul 22, 2009
Ihave the same problem but my battery light is on ,only at higher rpm any reason why??
Posted on Jun 16, 2013
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Nov 22, 2010 | 2002 Ford Ranger Regular Cab
Jan 26, 2010 | 1986 Ford Ranger 2WD
Jan 03, 2010 | 2002 GMC Sierra 1500
Sep 01, 2009 | 1998 GMC Suburban
Jun 19, 2009 | 2002 Kia Sportage
Apr 04, 2009 | 2002 Pontiac Grand Prix
Jul 22, 2008 | 2002 Ford Escape
Jun 19, 2008 | 2002 Ford Escape
552 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: