Tip & How-To about Toyota Tacoma

Spark Plugs ( How to replace them)

Spark plugs on a car should be replaced every 2 years or 24,000 miles. To remove the plugs you need a ratchet and either a 13/16 or 5/8 inch spark plug socket, depending on your car's spark plug size. A universal-joint drive-handle attachment and extension attachments can help you reach awkwardly placed plugs. Fit the socket firmly over the hex section of a plug and with the ratchet set to unlock, apply pressure counter clockwise. Hit the handle with the heel of your hand to unseat a stubborn plug. If it continues to stick, use penetrating oil. If it takes effort from start to finish to unscrew a plug, clean the threads of the hole with a thread chaser before installing a new plug. Replace plugs with the brand and model number recommended by manufacturer or with a manufacturer's equivalent. If your engine has an aluminum head, apply a film of anti seize compound (available in tubes from auto parts stores) to each new spark plug's threads. Use a spark plug gauge to adjust the gap between electrodes of each new plug. (Refer to your owner's manual or gap specification on the decal under your car's hood.) The gauge should fit snugly in the gap. To adjust the gap, use the gauge's bracket to bend the L shaped side electrode. Recheck with the spark plug gap gauge. Thread each plug into it's hole by hand until it seats. If the plug has a gasket,m use the ratchet to tighten it quarter to a half turn more. If there is no gasket, only a sixteenth of a turn should be needed. Lightly apply silicon dielectric grease to the inside of the cable terminals: then push each terminal onto the nipple of its spark plug.

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how to change spark plugs

The spark plugs are located under the four spark plug wires that go through the middle of the valve cover on top of the engine. With a twisting motion, remove the plug wires from the spark plugs. Then using a 5/8 inch spark plug socket and inch extension on a 3/8 inch ratchet, remove the spark plugs. Gap the new plugs to the correct gap (located on the label on the underside of the hood), and in stall into the holes in the valve cover using only your hand to get them started, then tightening with the ratchet. Then reinstall the wires back to their original locations, and you are finished.....

Jan 28, 2012 | 1993 Saturn SC1

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just need instructions on how to change the spark plugs and wires

Spark Plugs Spark plugs ignite the air and fuel mixture in the cylinder as the piston reaches the top of the compression stroke. The controlled explosion that results forces the piston down, turning the crankshaft and the rest of the drive train. The average life of a spark plug 30,000 miles (48,300 km). On the 2.2L (LN2),engine the life of the spark plug is 100,000 miles (166,000 km). Part of the reason for this extraordinarily long life is the exclusive use of unleaded fuel, which reduces the amount of deposits within the combustion chamber and on the spark plug electrodes themselves, compared with the deposits left by the leaded gasoline used in the past. An additional contribution to long life is made by the High Energy Ignition (HEI) system, which fires the spark plugs with over 35,000 volts of electricity. The high voltage serves to keep the electrodes clear, which suffer less pitting and wear compared to breaker point ignitions. Fig. 1: Breakdown of a common spark plug 86812008.gif
Fig. 2: Heat range on spark plugs explained 86812006.gif
Nevertheless, the life of a spark plug is dependent on a number of factors, including the mechanical condition of the engine, driving conditions, and the driver's habits. When you remove the plugs, check the condition of the electrodes, they are a good indicator of the internal state of the engine. Since the spark plug wires must be checked every 15,000 miles (24,000 km), the spark plugs can be removed and examined at the same time. This will allow you to keep an eye on the mechanical status of the engine. A small deposit of light tan or rust/red material on a spark plug that has been used for any period of time is to be considered normal. Any other color, or abnormal amounts of wear or deposits, indicates that there is something amiss in the engine. Fig. 3: Explanation of the spark plugs numbering system ---
Spark Plug Wires INSPECTION & TESTING Every 15,000 miles (24,000 km), inspect the spark plug wires for burns, cuts, or breaks in the insulation. Check the boots and the nipples on the distributor cap. Replace any damaged wiring. General Motors requests that you replace your spark plug wires every 30,000 miles (50,000 km). The resistance of the wires should be checked with an ohmmeter. Wires with excessive resistance will cause misfiring, and may make the engine difficult to start in damp weather. To check resistance, remove the distributor cap, leaving the wires in place. Connect one lead of an ohmmeter to an electrode within the cap; connect the other lead to the corresponding spark plug terminal (remove it from the spark plug for this test). The following chart gives resistance values as a function of length. Replace any wire which shows a resistance over 30,000 ohms.
  • 0–15 in. (0–38cm): 3,000–10,000 ohms
  • 15–25 in. (38–64cm): 4,000–15,000 ohms
  • 25–35 in. (64–89cm): 6,000–20,000 ohms
  • Over 35 in. (89cm): 25,000 ohms
It should be remembered that resistance is a function of length; the longer the wire, the greater the resistance. Thus, if the wires on your car are longer than the factory originals, resistance will be higher, quite possibly outside these limits. prev.gif next.gif

Aug 01, 2010 | 1993 Oldsmobile Cutlass Ciera

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where and how do you replace the spark plugs

You should find some wires going into the rocker covers or valve covers, they are attached to the dist coil which has 3 coils with 2 wires coming from each, follow them into your rocker covers, pull 1 plug at a time, get a 6 inch extension on your ratchet, and the right sized spark plug wrench, pull out the plug and take a peak, Most cars go a million miles on plugs now days, I haven't changed plugs in years. Unless you are burning oil, then a plug will foul. replace them with platinum tipped, if it doesn't fix the problem, it is the wires that usually cause more trouble than plugs.

Feb 13, 2010 | 2002 Chevrolet TrailBlazer

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spark plugs

The spark plugs are right in the top of the head, through the valve cover.. There are 4 of them.. 2 are under ignition coils, and the other 2 are hooked to the coils with plug wires.

Open the hood to the Sportage. Do not perform this repair on a hot engine. If it is hot, allow it to cool down before going any further.
Locate and remove the air intake hose assembly to get it out of the way. Use the appropriate screwdrivers to loosen any clamps.
Locate and remove the accelerator throttle cable bracket using the ratchet and socket or a hand wrench.
Remove the coil cover from the cylinder head cover using the ratchet and socket. There are six bolts.
Remove the cylinder head cover. There are four bolts and two coils. Twist the boot on the high tension leads attached to each spark plug and pull them off. Inspect the spark plug cavity to ensure there is no debris or dirt inside. If so, blow it out or vacuum it out.
Place the spark plug socket onto the 12-inch long extension and ratchet and insert it onto the spark plug. Remove the spark plugs. The Gap to the new plugs should be between .039 to .043 inches
Apply a very light coat of anti-seize compound lubricant to the threads of the new spark plug(s). Install the spark plug into the cylinder using the extension and socket only. Do not use the ratchet to tighten until you're sure the spark plug has threaded into the bore correctly. Cross threading a spark plug can damage the cylinder head.
Tighten the plug to 13 to 15 foot pounds using the spark plug socket, the extension and the adjustable torque wrench. Reconnect the tension leads, the coils and four bolts to the cylinder head cover, the coil cover and six bolts, the accelerator throttle cable bracket, the air intake hose.
Test start the Sportage to ensure it's running properly and have a great day.

Jul 12, 2009 | 2001 Kia Sportage

1 Answer

Replacing spark plugs on a 2001 Acura TL 3.2


My name is Chris. I have 20 years acura experience.

If you have some technical experience changing spark plugs before you can it on these.


remove spark plug coil packs on top of valve covers. 8mm socket and ratchet.
twist coil packs and remove from cover/plug. use 6 inch 3/8 extention and 5/8 plug socket and ratchet...remove plugs from tube in valve cover. Use NGK plugs!!!!! or Nipondenso plugs only!!!! Nothing else.... trust me on this one.

However, I think your problem is more than just plugs. you need to explain what sound your are experiencing... please be detailed. when does it happen and how? does it have a check engine light?
does it run rough when you coast only?

Dec 15, 2008 | 2001 Acura 3.2TL

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