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Anonymous Posted on Nov 10, 2008

Oil on my sperk plug

As the topic says, found oil on my spark plug threads on the #1 and #2 cylinders. #1 was the worst, looks like it was all the way up the threads. The plugs themselves aren't fouled with oil and they have at least 3,000 miles on them. Is this something I should worry about? I just dropped in some new plugs so I guess I'll see how those are doing in the next hundred miles or so. My bike does have a habit of making oil disappear, but it's in small quantities at a time and I figured it was from my leaky valve cover gasket.

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  • Master 2,336 Answers
  • Posted on Nov 10, 2008
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If you have a valvecover leaking, it could well be leaking into the plug well, and that's where the oil on your plug threads is from.

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0helpful
1answer

Found oil on spark plug threads but not shooting code for cylinder

When the Valve Cover Seals leak past the Spark Plug Seals, it will get Oil on the Plugs, not a huge problem but something you can do yourself with changing the Valve Cover Gaskets
1helpful
1answer

Spark plugs

Check this SPARK PLUG REPLACEMENT - REMOVAL PROCEDURE

1_23_2012_5_10_32_pm.jpg

1. Remove the ignition coils (lines at end this document), then return here once you have gotten the Coil
Packs off and precede with step 2 from here.
2. Clean the spark plug recesses with low pressure air. CAUTION: Wear safety glasses
when using compressed air, as flying dirt particles may cause eye injury. NOTE:
Clean the spark plug recess area before removing the spark plug. Failure to do so could
result in engine damage because of dirt or foreign material entering the cylinder head, or
by the contamination of the cylinder head threads. The contaminated threads may prevent
the proper seating of the new plug. Use a thread chaser to clean the threads of any
contamination.
3. Remove the spark plugs from the cylinder head. NOTE: Allow the engine to cool before
removing the spark plugs. Attempting to remove the spark plugs from a hot engine may
cause the plug threads to seize, causing damage to cylinder head threads.
4. Inspect the spark plugs.

INSTALLATION PROCEDURE

1_23_2012_5_11_30_pm.jpg

1. Measure the spark plug gap on the spark plugs to be installed. Compare the measurement
to the gap specifications. NOTE:
• Use only the spark plugs specified for use in the vehicle. Do not install spark
plugs that are either hotter or colder than those specified for the vehicle. Installing
spark plugs of another type can severely damage the engine.
• Check the gap of all new and reconditioned spark plugs before installation. The
pre-set gaps may have changed during handling. Use a round feeler gage to ensure
an accurate check. Installing the spark plugs with the wrong gap can cause poor
engine performance and may even damage the engine.
2. Install the spark plugs to the cylinder head. NOTE:
• Be sure that the spark plug threads smoothly into the cylinder head and the spark
plug is fully seated. Use a thread chaser, if necessary, to clean threads in the
cylinder head. Cross-threading or failing to fully seat the spark plug can cause
overheating of the plug, exhaust blow-by, or thread damage.
• Refer to Component Fastener Tightening Notice in Service Precautions.
Tighten the spark plugs to 18 N.m (13 lb ft).
3. Install the ignition coils.

IGNITION COIL(S) REPLACEMENT
REMOVAL PROCEDURE
1. Remove the air cleaner resonator and outlet duct.
2. Disconnect the engine wiring harness electrical connector (1) from the oil pressure sensor (2).
3. Disconnect the engine wiring harness retainers (1) from the power steering pump (2).
4. Disconnect the engine wiring harness electrical connectors (1, 4) from the following:
• The exhaust camshaft position (CMP) sensor (5)
• The camshaft position (CMP) actuator solenoid valve (6)
5. Disconnect the engine wiring harness retainer (2) from the camshaft cover (3).
6. Disconnect the engine wiring harness electrical connectors from the following:
• The engine coolant temperature (ECT) sensor (1)
• The fuel injector harness (2)
• The ignition coils (4)
• The heated oxygen sensor (HO2S) (5)
7. Disconnect the engine wiring harness electrical connector from the intake camshaft position (CMP) sensor.
8. Carefully disengage the engine wiring harness conduit from the camshaft cover, and position aside.
9. Remove the ignition coil bolts.
10. Remove the ignition coils from the camshaft cover.

INSTALLATION PROCEDURE
1. Install the ignition coils into the camshaft cover. IMPORTANT: Ensure the ignition coil seals are properly seated to the camshaft cover.
2. Install the ignition coil bolts. NOTE: Refer to Fastener Notice in Service Precautions. Tighten the ignition coil bolts to 10 N.m (89 lb in).
3. Attach the engine wiring harness conduit to the camshaft cover.
4. Connect the engine wiring harness electrical connector to the intake CMP sensor.
5. Connect the engine wiring harness electrical connectors to the following:
• The ECT sensor (1)
• The fuel injector harness (2)
• The ignition coils (4)
• The HO2S (5)
6. Connect the engine wiring harness electrical connectors (1, 4) to the following:
• The exhaust CMP sensor (5)
• The CMP actuator solenoid valve (6)
7. Connect the engine wiring harness retainer (2) to the camshaft cover (3).
8. Connect the engine wiring harness retainers (1) to the power steering pump (2).
9. Connect the engine wiring harness electrical connector (1) to the oil pressure sensor (2).
10. Install the air cleaner resonator and outlet duct.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.
1helpful
1answer

How to change spark plugs in a 2005 chev colorado

SPARK PLUG REPLACEMENT - REMOVAL PROCEDURE

1_23_2012_5_10_32_pm.jpg

1. Remove the ignition coils (lines at end this document), then return here once you have gotten the Coil
Packs off and precede with step 2 from here.
2. Clean the spark plug recesses with low pressure air. CAUTION: Wear safety glasses
when using compressed air, as flying dirt particles may cause eye injury. NOTE:
Clean the spark plug recess area before removing the spark plug. Failure to do so could
result in engine damage because of dirt or foreign material entering the cylinder head, or
by the contamination of the cylinder head threads. The contaminated threads may prevent
the proper seating of the new plug. Use a thread chaser to clean the threads of any
contamination.
3. Remove the spark plugs from the cylinder head. NOTE: Allow the engine to cool before
removing the spark plugs. Attempting to remove the spark plugs from a hot engine may
cause the plug threads to seize, causing damage to cylinder head threads.
4. Inspect the spark plugs.

INSTALLATION PROCEDURE

1_23_2012_5_11_30_pm.jpg

1. Measure the spark plug gap on the spark plugs to be installed. Compare the measurement
to the gap specifications. NOTE:
• Use only the spark plugs specified for use in the vehicle. Do not install spark
plugs that are either hotter or colder than those specified for the vehicle. Installing
spark plugs of another type can severely damage the engine.
• Check the gap of all new and reconditioned spark plugs before installation. The
pre-set gaps may have changed during handling. Use a round feeler gage to ensure
an accurate check. Installing the spark plugs with the wrong gap can cause poor
engine performance and may even damage the engine.
2. Install the spark plugs to the cylinder head. NOTE:
• Be sure that the spark plug threads smoothly into the cylinder head and the spark
plug is fully seated. Use a thread chaser, if necessary, to clean threads in the
cylinder head. Cross-threading or failing to fully seat the spark plug can cause
overheating of the plug, exhaust blow-by, or thread damage.
• Refer to Component Fastener Tightening Notice in Service Precautions.
Tighten the spark plugs to 18 N.m (13 lb ft).
3. Install the ignition coils.

IGNITION COIL(S) REPLACEMENT
REMOVAL PROCEDURE
1. Remove the air cleaner resonator and outlet duct.
2. Disconnect the engine wiring harness electrical connector (1) from the oil pressure sensor (2).
3. Disconnect the engine wiring harness retainers (1) from the power steering pump (2).
4. Disconnect the engine wiring harness electrical connectors (1, 4) from the following:
• The exhaust camshaft position (CMP) sensor (5)
• The camshaft position (CMP) actuator solenoid valve (6)
5. Disconnect the engine wiring harness retainer (2) from the camshaft cover (3).
6. Disconnect the engine wiring harness electrical connectors from the following:
• The engine coolant temperature (ECT) sensor (1)
• The fuel injector harness (2)
• The ignition coils (4)
• The heated oxygen sensor (HO2S) (5)
7. Disconnect the engine wiring harness electrical connector from the intake camshaft position (CMP) sensor.
8. Carefully disengage the engine wiring harness conduit from the camshaft cover, and position aside.
9. Remove the ignition coil bolts.
10. Remove the ignition coils from the camshaft cover.

INSTALLATION PROCEDURE
1. Install the ignition coils into the camshaft cover. IMPORTANT: Ensure the ignition coil seals are properly seated to the camshaft cover.
2. Install the ignition coil bolts. NOTE: Refer to Fastener Notice in Service Precautions. Tighten the ignition coil bolts to 10 N.m (89 lb in).
3. Attach the engine wiring harness conduit to the camshaft cover.
4. Connect the engine wiring harness electrical connector to the intake CMP sensor.
5. Connect the engine wiring harness electrical connectors to the following:
• The ECT sensor (1)
• The fuel injector harness (2)
• The ignition coils (4)
• The HO2S (5)
6. Connect the engine wiring harness electrical connectors (1, 4) to the following:
• The exhaust CMP sensor (5)
• The CMP actuator solenoid valve (6)
7. Connect the engine wiring harness retainer (2) to the camshaft cover (3).
8. Connect the engine wiring harness retainers (1) to the power steering pump (2).
9. Connect the engine wiring harness electrical connector (1) to the oil pressure sensor (2).
10. Install the air cleaner resonator and outlet duct.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.
0helpful
1answer

Where are soark plugs

Vehicles: 2000 Kia Sportage 4-cylinder 2.0L MFI DOHC 1998-2002

They're hidden underneath the coil cover, which is partially obscured by the accelerator cable bracket, which is obstructed by the air intake.

They're accessed from the top of the engine.

If you don't have a compressed air line to blow dirt away from around the plugs before removing them, one may blow through a plastic drinking straw (while closing eyes), or use a can of compressed air (with a little red plastic straw) sold for use cleaning computer PC boards/keyboards.

Where the manual (below) says "carefully install the spark plug into the cylinder head", you may consider one or another of a couple of experienced mechanic's tricks (used to avoid cross-threading the plug thus damaging the head):
trick 1: start plug by putting plug onto the end of a piece of stiff-ish hose, and
start the threads by gently turning the end of the hose. Once plug has
safely started turning into its threads, switch to a spark plug socket.
trick 2: use the spark plug socket, but carefully start the plug by gently
turning the plug COUNTER-clockwise, until the plug drops a hair - at this
point you know you've found the start of the first thread. Then gently thread
the plug in clockwise.
--------------------------------------------------------------
Spark Plugs - Removal & Installation

WARNING
Do not attempt to remove spark plugs when the engine is hot.

(1) Disconnect the negative battery cable.
(2) Remove the air intake hose assembly.
(3) Remove the accelerator cable bracket.
(4) Remove the six bolts and coil cover from cylinder head cover.
(5) Remove the four bolts and the two coils from the cover.
(6) Disconnect the high tension leads from the spark plugs by twisting the boot and removing.
(7) Use compressed air to remove any dirt from around the spark plug hole.
(8) Make sure the spark plug socket fits squarely on the spark plug, and then remove.
--------------------------------------------
To install:

(1) Be sure the spark plug gap is set to 0.039-0.043 in. (0.98-1.09mm).
(2) Apply anti-seize compound or light lubricating oil (WD-40 or 3-in-1) to the spark plug threads.
(3) Carefully install the spark plug into the cylinder head and torque to 11-17 ft. lbs. (23 Nm).
(4) Reconnect high tension leads to the spark plugs.
(5) Install the two ignition coils and torque four mounting bolts to 14-19 ft. lbs. (26 Nm).
(6) Install the coil cover and secure with six bolts
(7) Install the accelerator cable bracket.
(8) Reconnect the air intake hose assembly
(9) Reconnect the negative battery cable.
0helpful
2answers

Oil is leaking into the spark plug tube of my 1996 toyota avalon xls

Had the same thing happen to a '94 grand am that i owned. If the car still runs and it's not leaking that much, just leave it. That's what I did. Didn't to any further damage. It'll be expensive to fix. Can't remember how much.
1helpful
2answers

Cause of oil in sparkplug tube?

1.your valve cover's spark plug chamber seal is leaking. Which requires removing the valve covers and replacing the gaskets and seals. 2. Excessive oil spills on to the valve cover and ignition coils when adding oil.

**This excess oil on the plug boots can cause the coils to short and eventually fail.
2helpful
1answer

Oil in 1 1997 chrysler lhs spark plug tube

although I am not familiar with this particular engine my son's Mazda Miata had oil in the plug holes and it only required a new valve cover gasket to fix it.
3helpful
2answers

How do you change the spark plugs in a 2004 Toyota Tacoma with a 3.4 V6. The driver side has plugs with the wires leading to the other side?s plugs (passenger) that has a "coil box or something? over each...

1997 Toyota Truck Tacoma 4WD 2.7L EFI DOHC 4cyl

Toyota Pick-ups, Land Cruiser, and 4 Runner 1997-00

Spark Plug - Removal & Installation


832bf1f.jpg

Fig. On the 5VZ-FE engine, you must remove the coil for access to the spark plug

ba42a44.jpg

Fig. Use a 3 / 8 in. ratchet, a locking extension, and a spark plug socket to reach the spark plugs which are deep down in the cylinder head

6caced7.jpg

Fig. Once loosened, carefully withdraw the spark plug from the cylinder head

4fc1aab.jpg

Fig. View of a twin electrode plug that is found in the 5VZ-FE engine


Remove the spark plugs and wires one at a time to avoid confusion and incorrect wiring during installation.
  1. Disconnect the negative battery cable, and if the vehicle has been run recently, allow the engine to thoroughly cool.
  2. On engines equipped with spark plugs, 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. On engines with coil-over-plug ignition, remove the ignition coil for access to the spark plug. For additional information, please refer to the following topic(s): Engine Electrical, Ignition Coil.
  4. 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.
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 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 It is recommended that you NOT 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 to reach areas, an old spark plug wire and boot or a short length of rubber hose, placed on the spark plug, 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 cross-thread.
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 cross-threading and damaging the cylinder head bore. Remember, your truck has aluminum cylinder heads and the spark plug threads in the head are easily damaged.
  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 1115 ft. lbs. (1520 Nm).
  2. If equipped with coil-over-plug ignition, install the ignition coil assembly(ies).
  3. If equipped with spark plugs, 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.

I hope help you. Good luck.
9helpful
1answer

Where are the spark plugs on my 2000 Oldsmobile Intrigue and how do i change them?

2000 Oldsmobile Intrigue V6-214 3.5L VIN H SFI

Spark Plug: Service and Repair
REMOVAL PROCEDURE
TOOLS REQUIRED
J 43094 Spark Plug Boot Puller
1. Turn OFF the ignition switch.
2. Remove the ignition coil assembly.
3. Use the J 43094 in order to remove the spark plug boots from the spark plugs.
NOTE: Allow the engine to cool before removing the spark plugs. Attempting to remove the spark plugs from a hot engine may cause the plug
threads to seize causing damage to cylinder head threads.
NOTE: Clean the spark plug recess area before removing the spark plug. Failure to do so could result in engine damage because of dirt or
foreign material entering the cylinder head, or by the contamination of the cylinder head threads. The contaminated threads may prevent the
proper seating of the new plug. Use a thread chaser to clean the threads of any contamination.
4. Remove the spark plugs from the engine.
INSTALLATION PROCEDURE
NOTE: Use only the spark plugs specified for use in the vehicle. Do not install spark plugs that are either hotter or colder than those specified for the
vehicle. Installing spark plugs of another type can severely damage the engine.
NOTE: Check the gap of all new and reconditioned spark plugs before installation. The pre-set gaps may have changed during handling. Use a round
feeler gage to ensure an accurate check. Installing the spark plugs with the wrong gap can cause poor engine performance and may even damage the
engine.
1. Measure the spark plug gap on the spark plugs to be installed. Compare the measurement to the gap specifications. Refer to Spark Plug Usage.
Correct as necessary.
NOTE: Be sure that the spark plug threads smoothly into the cylinder head and the spark plug is fully seated. Use a thread chaser, if necessary,
to clean threads in the cylinder head. Cross-threading or failing to fully seat the spark plug can cause overheating of the plug, exhaust blow-by, or
thread damage.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the spark plugs to the engine.
Tighten
Tighten the spark plug to 20 N.m (15 lb ft).
3. Install the spark plug boots to the ignition coil assembly.

5c212b8.jpg
4. Install the ignition coil assembly.
0helpful
1answer

2004 Toyota Tundra spark plug

The causes for spark plugs leaving the cylinder head are as follows:
1. The threads in the cylinder head were compromised, as in cross-threading.
2. The spark plug, when replaced, was not tightened down properly (like only 2-3 threads in)
3. A combination of the above.

Whe the plugs are fully seated in the cyl heads, and are at the proper torque, it would be extremely RARE for the plug to be jettisoned by the compression of the pistons. You only have roughly 175-185 PSI compression, this will NOT defeat the retention of the threads. Look at the hole in the head...How may threads are damaged? If it is just the end of the hole, the plugs was not in "all of the way". If ALL of the threads are bad, the plug was inserted improperly, and damaged the threads in the head. Rethreading (a "heli-coil") will correct you condition, if properly done.
Hope this helps.
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