Observe Out for Ford Motorcraft Two-piece Spark Plugs That Break!

The authentic equipment Motorcraft brand spark plugs that have been factory set up in many late model (2004 to 2008) Ford trucks with 5.4L V8 and 6.8L V10 engines, 2005 to 2007 Mustang GT 4.6 and 5.4L V8 engines, and 2008 Mustang GT designs constructed before 11/30/07) can break once you attempt to remove them!

Autos with these spark plugs include things like: 2004 – 2008 Ford F150
2005 – 2008 Ford Expedition and F-Super Duty
2005 – 2007 (and 2008 designs developed to 11/30/07) Ford Mustang GT with 4.6L V8 engine
2005 – 2008 Lincoln Navigator
2006 – 2008 Ford Explorer
2006 – 2008 Lincoln Mark LT
2006 – 2008 Mercury Mountaneer
2007 – 2008 Ford Explorer Sport Trac
F-53 Motorhome chassis

The Motorcraft PZT 2FE Platinum spark plugs have a crimped decrease electrode shell that becomes coated with carbon, triggering it to stick from the cylinder head. Rust and corrosion within the reduce plug shell could also cause it to stick. Once you try to unscrew the plug, the decrease shell breaks off and stays from the head. Removing the broken shell needs a special Ford, Snap-On or Lisle extractor tool. Worse yet, if any shell or electrode fragments fall to the cylinder and can not be fished out, you might have to remove the cylinder head to acquire the debris out.

Many professionals suggest replacing the unique equipment Motorcraft spark plugs ahead of the get too several miles on them (above 40,000 miles). Replacing the plugs at reduced mileage will reduce the chance of them sticking and breaking. Waiting until finally the authentic equipment spark plugs have 100,000 miles on them is asking for difficulties!

If your car features a lot of miles on it (say in excess of 80,000), along with the spark plugs have never ever been replaced, it might be very best to just leave them alone. The original equipment Motorcraft spark plugs possess a platinum tipped center electrode. The plugs should last upwards of 100,000 miles or more. Several plugs will basically go up to 140,000 miles or more without complications – provided the engine is not burning oil and sees adequate highway driving to maintain the plugs clean (regular quick trip stop-and-go driving may cause plugs to foul). So provided that your engine is starting and operating fine, and having ordinary fuel financial system (no misfiring and no Verify Engine light with misfire codes), there’s definitely no have to substitute the spark plugs.

Here is one more thought. When you are planning on selling or trading your Ford truck or Mustang within the up coming number of years (and it is operating fine now), leave the spark plugs alone and allow the following owner fret about modifying them. The chance is when you try to change high mileage plugs and break off quite a few plugs (which frequently comes about), people spark plugs could cost you a lot of cash. Many Ford dealerships are charging $600 to quite a few thousand dollars to alter the spark plugs to the 5.4L, 4.6L and 6.8L engines that have the two-piece Motorcraft spark plugs. Why? As the plugs typically stick and break, and it will take lots of time and hard work to extract the debris in the spark plug holes. In some instances, it may even be needed to remove the cylinder heads to complete their repair.

Ford’s Technical Services Bulletin 08-7-6

Ford Technical Services Bulletin 08-7-6 addresses the advised removal procedure for these spark plugs, along with the repair procedure if one or more plugs break ( Click Here to View Ford TSB 08-7-6). NOTE: TSB 08-7-6 supersedes the earlier TSB 06-5-9 that also covered precisely the same topic. The difference is that the most recent TSB says to remove the spark plugs if the engine is COLD (at room temperature). The older TSB mentioned to remove the spark plugs when the engine was WARM (not COLD and never HOT). They principle was that a warm engine generates a bit more clearance concerning the plug shell and cylinder head. But removing spark plugs on a warm engine with aluminum cylinder heads also raises the risk of damaging the threads during the spark plug hole, as well.

How you can Remove the Motorcraft Spark Plugs So They do not Break

Initially, make certain the engine is at room temperature (COLD).

Loosen just about every spark plug about 1/8 to 1/4 turn. Then Halt!

Spray some WD-40 or penetrating oil into every spark plug effectively. Let the oil to soak in to the threads so it could loosen any carbon or corrosion throughout the electrode shell. Wait at the very least 15 minutes, or extended (overnight is recommended when the plugs have in excess of 80,000 miles on them).

Right after the penetrating oil has had time for you to work, slowly loosen every spark plug, applying no more than 35 ft. lbs of torque for your wrench. If a plug sticks, retighten it half a turn, apply additional penetrating oil, wait, then consider yet again. The plugs may squeal and groan, but will hopefully come out without having breaking.

Eliminating carbon from within the combustion chamber before changing the spark plugs can also decrease the threat of your spark plugs sticking and breaking. Using Leading Tier gasoline or including a fuel system cleaner (such as Chevron Techron or equivalent) to your fuel tank frequently may help lessen carbon buildup inside the combustion chamber. If you engine has a large amount of miles on it, and/or is using oil, working with a Top Cleaner treatment method to remove carbon prior to changing the spark plugs is really encouraged.

In the event you Break a Spark Plug

If you break a spark plug, see the Ford TSB 08-7-6 to view Ford’s technique for getting rid of the broken electrode shell from the cylinder head.

Right here is usually a brief video on the best way to use NAPA Ford Spark Plug Extractor SER 4663.

Lisle Tool also sells a spark plug repair tool for these applications (aspect quantity 65600). For facts about this tool, Click Right here. To check out the instructions on how to make use of the Lisle instrument to remove a broken spark plug insulator shell, Click Here.
The Lisle Instrument is accessible on-line at Amazon and from Snap-On tool distributors.

Spark Plug Installation

Tend not to reinstall precisely the same Motorcraft spark plugs (PZT 2FE Platinum). Substitute the original equipment spark plugs with one-piece spark plugs from Champion Spark Plugs(component number 7989), or related spark plugs from NGK, Denso or Bosch. Quite a few aftermarket performance corporations (which include Roush) also sell a more robust one-piece replacement spark plug for these engines that won’t break. Note: the Champion spark plugs require a more substantial 5/8-inch socket to install (the unique Motorcraft plugs possess a 9/16-inch hex shell).

Apply nickel anti-seize for the outer surface from the decrease electrode shell (the smooth component) prior to putting in the plugs.

Tighten the brand new spark plugs to 25 ft. lbs (34 Nm).

Replacing the rubber boot that fits involving the coil and spark plug can also be advisable to stop arcing that could induce misfires.