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This page is taken directly from our digital online manual 36058 for the 1980 to 1996 Ford F100, F150, F250, and F350 pickup trucks (including 1997 F250HD and F350), plus Bronco SUV, with 3.8 liter V6, 4.9L/300 cubic inch inline six, and 255, 302, 351, 400 and 460 cubic inch V8 engines. It covers removal and replacement of the spark plugs, and and checking and adjusting the spark plug electrode gap.
The spark plugs are located on the left side of the engine (4.9L/300ci inline six) or on both sides of all other V6 and V8 engines.
(See illustration) In most cases, the tools necessary for spark plug replacement include a dedicated spark plug socket (spark plug sockets are padded inside to prevent damage to the porcelain insulators on the new plugs), a ratchet handle to turn it, extensions to make it easier to reach the pugs, and a gap gauge to check and adjust the gaps on the new plugs (though most come properly gapped today). A torque wrench should be used to properly tighten the new plugs, without overtightening.
A special plug wire removal tool is available for pulling the wire boots from the spark plugs, but it isn’t absolutely necessary.
1980-1996 Ford F100 F150 F250 F350 Bronco Haynes Repair Service Shop Manual 0107 (Fits: 1996 Ford F-150) 4.5 out of 5 stars (15) 15 product ratings - 1980-1996 Ford F100 F150 F250 F350 Bronco Haynes Repair Service Shop Manual 0107.
Haynes manuals provide you with all the practical tips, photos, and step-by-step explanations you need to get the job done. F-150 (2015 - 2017) F-150 (2015 - 2020). 1980-1996 Ford F100 F150 F250 F350 Bronco Haynes Repair Service Shop Manual 0107 (Fits: 1994 Ford F-150) 4.5 out of 5 stars (12) 12 product ratings - 1980-1996 Ford F100 F150 F250 F350 Bronco Haynes Repair Service Shop Manual 0107. Below you can find the owners manuals for the F150 model sorted by year. The manuals are free to download and are available in PDF format. Is is recommended to check the owners manual corresponding to the correct year of your Ford F150 to solve the problems. If you appreciate the DIY lifestyle, then you need to get a Ford F150 repair manual. No matter what you want for your vehicle, PartsGeek.com is here to help. A variety of aftermarket and refurbished components are available. The repair manuals for the Ford F150 are available by Chilton and Haynes.
Tools required for changing spark plugs
1) Spark plug socket - These sockets will have special padding inside to protect the spark plug’s porcelain insulator.
2) Torque wrench - Although not mandatory, using a torque wrench is the best way to ensure the plugs are tightened properly.
3) Ratchet handle - This is the standard handle to turn the spark plug socket. You should never use a torque wrench for loosening bolts or general ratcheting.
4) Socket extension - Depending on engine, model and accessories, you may need special extensions and universal joints to more easily reach some of the plugs.
5) Spark plug gap gauge - These tools to check and adjust the spark plug gap comes in a variety of styles. Make sure the recommended setting for your engine is included.
- The best approach when replacing the spark plugs is to purchase the new ones in advance, check the gap, and adjust them if needed. Then replace the plugs one at a time so the plug wired do not get mixed up. When buying spark plugs, check the information found on the Vehicle Emission Control Information (VECI) label located under the hood and in the owner’s manual. If differences exist between the plug number specified on the emissions label and in the owner’s manual, assume that the emissions label is correct.
- Allow the engine to cool completely before attempting to remove any of the plugs. While you are waiting for the engine to cool, check the new plugs for defects and adjust their gap.
- (See illustration) The gap is checked by inserting the proper thickness gauge between the electrodes at the tip of the plug. The gap between the electrodes should be the same as the one specified on the VECI label. The wire should just slide between the electrodes with a slight amount of drag. If the gap is incorrect, use the adjuster on the gauge body to bend the curved side electrode slightly until the proper gap is obtained. If the side electrode is not exactly over the center electrode, bend it with the adjuster until it is. Check for cracks in the porcelain insulator (if any are found, the plug cannot not be used).
Spark plug manufacturers recommend using a wire-type gauge when checking the gap - if the wire does not slide between the electrodes with a slight drag, adjustment is required
To change the gap, bend the side electrode only, as indicated by the arrows and be very careful not to crack or chip the porcelain insulator surrounding the center electrode
- (See illustration) With the engine cool, remove the spark plug wire from one spark plug at a time. Pull only on the boot at the end of the wire to avoid damaging the wire. Do not pull on the wire itself. Spark plug wire removal pliers should be used if available.
When removing the spark plug wires, pull only on the spark plug boot with a twisting/pulling motion. Spark plug wire removal pliers make this easier.
- If compressed air is available, use it to blow any dirt or foreign material away from the spark plug hole. A common bicycle pump will also work. The idea here is to eliminate the possibility of debris falling into the cylinder as the spark plug is removed.
- Place the spark plug socket over the plug and remove it from the engine by turning it in a counterclockwise direction.
- Compare the spark plug you just removed to those shown in the guide below to get an indication of the general running condition of that cylinder, and the overall health of the engine.
- (See illustration) A handy trick is to slip a short length of rubber hose over the end of the plug to use as a tool to guide the pulg, and thread it into place. The hose will grip the plug well enough to turn it, but will start to slip if the plug begins to cross-thread in the hole. This will prevent damaged threads and the accompanying large repair costs. Thread one of the new plugs into the hole with your fingers until you can no longer turn it, then tighten it with a torque wrench (if available) or the ratchet.
A length of snug-fitting rubber hose over the spark plug will save time by helping you guide the plug into tight places and prevent damaged threads when installing the spark plugs. The hose will allow you to turn the plug, but not cross thread it.
Before pushing the spark plug wire onto the end of the plug, inspect the wire and boot for cracks, heat damage, abrasion, and other issues, as outlined in Section 27 of the Haynes manual.
Attach the plug wire to the new spark plug, again using a twisting motion on the boot until it is seated on the spark plug.
Repeat the procedure for the remaining spark plugs, replacing them one at a time to prevent mixing up the spark plug wires.
This video is a general overview of inspecting, gapping, removing and replacing the spark plugs on the typical vehicle. Much of it applies to the motors installed in Ford trucks, but it is meant merely as a supplement to the above instructions.
Model overview
The Ford F-Series is a series of trucks sold and produced by Ford. Released in 1948, the F-Series is a range of light trucks sold as full-size pickup trucks. The F-Series is located above the compact Ford Ranger in the Ford truck model spectrum. Beginning with 1999, the F-Series also covers the heavier-duty Super Duty range, which involves pickup trucks, chassis cab trucks, and medium-duty trucks. The current production list of the Ford F-Series includes the F-150 pickup, F-250 through F-450 Super Duty pickups, F-450/550 Super Duty chassis cabs, and F-650/750 Super Duty Class 6-8 trucks. The F-150 model is the most popular model of the F-Series, currently in its thirteenth generation.
Since 1977 The F-Series is the best-selling pickup truck in the United States and also the best-selling car in Canada. In 2018 the F-Series generated $41 billion in revenue for Ford. From time to time, Ford has sold the F-Series across all three of its branches in North America. In Canada during 1948-1968, Mercury sold the F-Series as the M-Series and in the 2000s, Lincoln marketed the F-150 as the Blackwood. The F-series platform has underpinned several SUVs, including the Ford Bronco, Ford Expedition, and Lincoln Navigator.
The current production, the Ford F-Series is produced by Ford in four plants in the United States.
Ford F150 Repair Manual Free
Ford F-150 known problems
96 Ford F150 Haynes Manual For Sale
- The rough-running engine seen in the twelve generations of the F-150 (2009-2014)
- Another issue is that spark plugs tend to accumulate soot over time it's causing the spark to break-off. A good solution is to clean them at regular times depending on the year model.
- If you start smelling burnt oil then chances are that you have a problem the head gasket. The gasket disintegrates and permits oil leaking into the engine.