The tap may break if this is attempted.Ĥ.
#Spark plug extractor update#
A tap socket adaptor is provided with service tool 303-1203 update to connect the tap to a 3/8′′ socket drive.Ĭaution: Do not attempt to remove the ground electrode shield with the tap and wrench. Back the tap up frequently to break chips and avoid cut material from coiling-up in the spark plug well. Turn the tap about three to four turns into the ground electrode shield. Coat the end of the tap with general-purpose grease.ī. Thread-tap the ground electrode shield using a 9.0 x 1.0 mm plug tap (tap profile is about 3-4 reduced diameter threads on the tip end).Ī. This will plug and protect the combustion chamber from contamination.ģ. Push the cap into the ground shield down to the electrode strap.
#Spark plug extractor install#
Use the installation rod provided with service tool 303-1203 update to install the modified vacuum cap.
Modify vacuum cap to a 3/8′′ (10 mm) length for each ground electrode shield that needs to be removed.Ģ. If porcelain remains, proceed to Mode 2 or 3 removal.ġ. Note: This tool is only designed to work with an empty ground electrode shield. Use Rotunda special service tool 303-1203 to remove an empty ground electrode shield from the cylinder head. Mode 3: The upper section of porcelain broke off with remaining porcelain left inside the ground shield. Mode 2: The entire porcelain insulator and ground electrode shield remains in the cylinder head. Mode 1: The ground electrode shield is left behind as an empty shell.
Refer to the appropriate removal procedure as required. If the spark plug separates after following the Spark Plug Removal Procedure, it will fail in one of three modes. Repeat the back and forth turning as needed until turning effort is reduced, and remove the spark plugs.įord says do not use power tools for the plug removal spark plugs must be only be removed with hand tools. The expected removal torque is about 33 lb.-ft. Some screeching and high effort may be noticed. Tighten, and then loosen the spark plug, working the plug back and forth. Do not work the spark plug back and forth at this point.Ĭaution: Excessive Motorcraft carburetor tune-up cleaner, or repeating the process several times with too much cleaner fluid, could introduce enough liquid volume to hydro-lock the engine.ģ.
The cleaner will wick down to the ground electrode shield and soften the carbon deposits in this time. A minimum period of 15 minutes of soak time is required. Using Motorcraft Carburetor Tune-Up Cleaner, fill the spark plug well just above where the jamb nut hex sits (1/2 – 3/4 teaspoon). Back out the spark plugs no more than 1/8 to 1/4 of a turn. Remove the coil-on-plug assemblies and thoroughly blow out the spark plug wells and surrounding valve cover area with compressed air.Ģ. Removing the spark plugs from a warm/hot engine increases the chance the threads could be damaged.ġ. The engine must be at room temperature when performing spark plug service. To remove the spark plugs on these engines without damage, it is necessary to adhere exactly to this procedure before removal is attempted.Ĭaution: Do not remove plugs when the engine is warm or hot. The engine build date can be read on the left-hand cam cover information sticker. This may cause damage to the spark plug and leave part of the spark plug in the cylinder head.Īffected engine build dates are as follows: 5.4L 3V and 6.8L 3V before Oct. This article supersedes TSB 08-1-9.Īccording to Ford, some F-150s, Mark LTs, F-Super Dutys, Expeditions and Navigators with the 5.4L 3V engine Mustangs, Explorers, Mountaineers and Explorer Sport Tracs with the 4.6L 3V engine and F-Super Dutys with the 6.8L 3V engine may experience difficulty with spark plug removal. This too, might not be an option, since there are many customers that expect a spark plug replacement job to be completed the same day.įord recognized the plug removal problem and issued a tech bulletin TSB 08-7-6 to address the problems associated with plug removal on various Ford vehicles. Some techs who have come across the broken plug problem recommend performing an engine flush the day prior to changing out the spark plugs and letting the vehicle sit overnight as a way to loosen up the carbon deposits, allowing for less of a chance for a plug to break. That, obviously, can be a hard sell to your Ford driving customers. Techs we talked to advised addressing the issue before it can become a problem meaning replace the plugs prior to their recommended replacement interval. This can cause a plug to break in the chamber during its removal, creating stress on the tech and additional labor time to remove the damaged component. The problem lies with excessive carbon buildup on the plugs, especially on engines that have gone beyond an OEM-recommended replacement interval.
0 kommentar(er)
