Question about 2002 Ford E350

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Spark plug backed out

After recent tune-up spark plug backed completely out, now can't get it to go back in. tried a manual thread cleaner tool to make sure the threads in the block were still good. and had no problem threading it into the block, but spark plug still won't thread or catch. even replaced spark plug with a new one.

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I have a feeling you blew you're plug out and threads too,easy fix unless you have a long reach heli-coil on old plug already used. common for this to happen especially if you didnt torque these plugs to spec. these plugs are torque sensitive to threads in head. I see this quite a bit when independant shops tune up a 4.6 or 5.4. get a mirror and light and see if you see aluminum or bigger hole with no threads. they have a kit available for these,be careful or you will be looking for a head and use the long reach insert.

Posted on Jul 14, 2009

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1 Answer

Spark plug blow out

Most likely what happened is whoever installed the plugs likely cross threaded one into the aluminum thus causing it to work loose / "blow out". Try a Powerbuilt Back-Tap (spark plug thread repair tool) or you may need a Heli-Coil insert that fits your situation.

Mar 17, 2013 | 1999 Mercury Cougar

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Im not sure what a tune up entails.

Find your spark plugs blow compressed air around the plug to get rid of any dirt.Spray some nut buster type spray down by the threads on the plug. If your car has spark plug wires replace them one at a time. If you have coils on top of the plugs back off the two screws a little at a time so the coil housing doesn\'t cock and break. After the old plugs have soaked for about ten minutes put a socket on the plug turn the plug out about a half a turn and tighten back up then back out two turns and go in one. There is carbon on the threads and if you just take them out it could damage the aluminum head.To get to some plugs on a V6 they are under the intake plenum. Remove plenum and re install with new gasket later (It\'s easy). Take your new plugs and make sure thy are platinum or better and gap them for your engine.Put antiseze on the threads. Install the plugs by hand to make sure they start threading right and then torque down.Change air filter if needed

Mar 03, 2013 | 2000 Chrysler Sebring

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I want to change my own spark plug's

    • Locate the spark plug cables along the top or the sides of the engine, depending on CR-V model. Once the engine cools, use the trim panel tool to twist the spark plug wire at the wire's boot, which is the larger rubber portion located on top of the spark plug.
    • 2Pull back on the spark plug wire to remove it from the spark plug.

    • Place the socket on top of the spark plug and turn it counter-clockwise to unscrew and remove the spark plug from the well.
    • 4Rub anti-seize lubricant onto the new spark plug threads and on the tip of the spark plug.
    • 5Insert the new spark plug into the well. Manually turn the plug clockwise to thread the spark plug into place.
    • 6Test the tension on the plug with the tension testing tool. Adjust the tension as needed. Honda CR-V spark plugs generally need a tension between 10 and 15 foot pounds. The spark plug's packaging indicates its suggested tension.
    • 7Replace the spark plug wire, turn it from side to side and lock it into place. Continue the process with the rest of the spark plugs one at a time until all of the spark plugs are replaced.

Jun 24, 2012 | 1999 Honda CR-V

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My 2004 Concorde recently started shaking real bad noticeably when I'm at a complete stop. I recently had a tune-up and oil change. I'm paranoid driving my car because I think it's going to...

I would take it back to who did the tune-up and make them fix it. It sounds like your plugs might not be properly gaped, a coil isn't seated, or a coil is not plugged in all the way. You should also check the insulators (ceramic part) on the spark plugs to make sure none of them have cracks.

Sep 13, 2011 | 2004 Chrysler Concorde

1 Answer

Plug turned a 1/4 turn and locked down didnt want to force it

no dont force spark plug its trying to cross thread.back spark plug back out.apply thin coat of anti seize compound to spark plug threads.if you have problems getting spark plugs back in a hard to reach place, use a long piece 3/8 vacuum hose about what ever length you vacuum hose over spark plug insulator then install spark plugs to hard reach places to keep from cross threading.if plug tighten 1/4 turn.back out spark plug and try again.dont cross thread or you have to remove cylinder head.if spark plug hole hard to reach to retap or install thread inserts.

Apr 09, 2011 | Toyota Pickup Cars & Trucks

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How do i perform a tune up on a 2003 jeep liberty sport V-6 2WD do i just replace the spark plugs because I haven't worked on a jeep before please help?

That is about it, Spark plugs are rare, they go 100,000 miles, plus, now days, air filter, oil, belts, fluids. Belts get checked, but only get replaced at 60,000. That is about it. Hope this helps.

Jul 11, 2010 | Jeep Liberty Cars & Trucks

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Car was running fine recently had tune up. started running rough yesterday. checked battery terminals were very corroded, cleaned them. checked ground.

there could be a loose connection in a sensor or one didnt get pluged back in durring tune up. check spark plug wires etc.

Feb 18, 2010 | 1999 Nissan Quest

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Multiple cylinder misfire

Carefully inspect the threads it sounds as if you have a crossthreaded hole that isn't allowing the plug to full seat. You'll need to get the proper size threading die and very carefully recut the threads. Best done in a shop as if anything falls into the cylinder your looking at very expensive repairs. It happens quite frequently with aluminium blocks and needs to be fixed as a spark plug popping out lets hot fuel dump into the engine compartment. Here is a description of such a tool at toolmonger.

It can happen to the best of us: one moment of inattention results in a cross-threaded spark plug hole. You can either install a helicoil and hope for the best, or send it out to have the whole shebang re-tapped. Now you have another option. The Back-Tap can fix that cross-threaded hole from the inside — without pulling the head.
The Back-Tap is a tap with expandable threads and a mandrel to catch errant metal shards. Apply a dab of grease to the mandrel, then place the device in the hole past the damaged threads. As you back it out, the cutters expand out to engage the undamaged threads, then gently reshape the damaged ones. The greased mandrel keeps metal filings from ending up in the cylinder.
The result: a task that could potentially take days and cost hundreds of dollars is done in minutes for less than a hundred bucks.
MAC offers a three-piece kit that includes a 10mm, 12mm, and 14mm Back-Tap for $90. You can buy Individual taps from various sources for about $50 each.

May 23, 2009 | 2001 Dodge Neon

1 Answer

1999 Dodge grand Caravan Tune up

i hope this helps more. its hard to explain these things with out being at the car. but i hope this helps. it pretty easy just pull one wire off, unscrew plug from moter, replace with new one, replace with new wire. and repeat 4 or 6 times depending on what engine you have. but write back with anymore specific questions you have.

When you're removing spark plugs, work on one at a time. Don't start by removing the plug wires all at once, because, unless you number them, they may become mixed up. Take a minute before you begin and number the wires with tape.
  1. Disconnect the negative battery cable, and if the vehicle has been run recently, allow the engine to thoroughly cool.
When removing the spark plugs on the V-6 engine only on the firewall side, it may be necessary to remove the windshield wiper/motor module assembly from the vehicle. This will allow more room to work between the engine and the engine compartment firewall. Refer to for removal procedures.
0900c1528003c1aa.jpgFig. 3: Hold the spark plug boot firmly, while giving it a slight 1/2 twist in each direction before pulling it off of the spark plug. remenber do this one at a time. replace the whole wire with new one.
  1. On V-6 models only, remove the windshield wiper/motor module assembly from the vehicle for access to the spark plugs on the firewall side.
  2. Carefully twist the spark plug wire boot to loosen it, then pull upward and remove the boot from the plug. Be sure to pull on the boot and not on the wire, otherwise the connector located inside the boot may become separated.
  3. Using compressed air, blow any water or debris from the spark plug well to assure that no harmful contaminants are allowed to enter the combustion chamber when the spark plug is removed. If compressed air is not available, use a rag or a brush to clean the area.
0900c1528003c1ab.jpgFig. 4: Once all dirt is removed from around the spark plug, carefully loosen and remove the plug 0900c1528003c1ac.jpgFig. 5: Pull the used spark plug out of the cylinder head once it is completely loosened Remove the spark plugs when the engine is cold, if possible, to prevent damage to the threads. If removal of the plugs is difficult, apply a few drops of penetrating oil(WD40) or silicone spray to the area around the base of the plug, and allow it a few minutes to work.
  1. Using a spark plug socket that is equipped with a rubber insert to properly hold the plug, turn the spark plug counterclockwise to loosen and remove the spark plug from the bore.
WARNING Be sure not to use a flexible extension on the socket. Use of a flexible extension may allow a shear force to be applied to the plug. A shear force could break the plug off in the cylinder head, leading to costly and frustrating repairs.To install:
  1. Inspect the spark plug boot for tears or damage. If a damaged boot is found, the spark plug wire must be replaced.
  2. Using a wire feeler gauge, check and adjust the spark plug gap. When using a gauge, the proper size should pass between the electrodes with a slight drag. The next larger size should not be able to pass while the next smaller size should pass freely.
  3. Carefully thread the plug into the bore by hand. If resistance is felt before the plug is almost completely threaded, back the plug out and begin threading again. In small, hard to reach areas, an old spark plug wire and boot could be used as a threading tool. The boot will hold the plug while you twist the end of the wire and the wire is supple enough to twist before it would allow the plug to crossthread.
WARNING Do not use the spark plug socket to thread the plugs. Always carefully thread the plug by hand or using an old plug wire to prevent the possibility of crossthreading and damaging the cylinder head bore.
  1. Carefully tighten the spark plug. If the plug you are installing is equipped with a crush washer, seat the plug, then tighten about 1/4 turn to crush the washer. If you are installing a tapered seat plug, tighten the plug to specifications provided by the vehicle or plug manufacturer.
  2. Apply a small amount of silicone dielectric compound to the end of the spark plug lead or inside the spark plug boot to prevent sticking, then install the boot to the spark plug and push until it clicks into place. The click may be felt or heard, then gently pull back on the boot to assure proper contact.

Jan 03, 2009 | 1999 Dodge Grand Caravan

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