DIY 2000 Tacoma Spark Plugs. Midway through the 1995 model year, Toyota tweaked its Hi-Lux pickup and renamed it the Tacoma. The 2000 Tacoma had three engines available: a 2.4-liter four-cylinder with 142 horsepower, a 2.7-liter four-cylinder with 150 horsepower and a 3.4-liter V-6 with 190 horsepower. Toyota recommended changing the spark plugs in all three engines every 30,000 miles. Failure to do so could result in the plug gaps becoming too wide, causing a weak spark. Weak spark could result in a poor running engine.
Check the gap on all four new NGK BKR5EYA (or equivalent) spark plugs, using a spark plug gap tool. If any spark plugs do not have a gap between 0.029 and 0.033 inches, adjust the gap to meet this specification, using the spark plug gap tool.
Grab the spark plug wire boot and pull it upward, using a slight twisting motion, to remove it from the spark plug.
Inspect the spark plug wire for any visual defects, such as cracking, splitting or brittleness. Replace the wires as an entire set if any defects exist.
Remove the spark plug from the engine, using a ratchet, 6-inch extension and a spark plug socket.
Remove the old spark plug from the spark plug socket and insert the new plug into the socket. Hand-tighten the spark plug, using the spark plug socket and 6-inch extension. Attach a torque wrench to the 6-inch extension and apply 13 foot-pounds of torque to the spark plug.
Set the spark plug wire back on the spark plug and press down until you feel the wire "click" into place.
Repeat steps 2 through 7 until you replace all four spark plugs, one at a time so as to not confuse the order the wires attach to the spark plugs.
Check the gap on all six new NGK BKR5EKE-11 (or equivalent) spark plugs, using a spark plug gap tool. If any spark plugs do not have a gap ranging from 0.041 to 0.045 inches, adjust the gap to this specification with a spark plug gap tool.
Label all of the hoses running into the air intake tube, using masking tape and a permanent marker. Pull the hoses from the air intake hose.
Loosen the hose clamps on either side of the air intake hose, using a Phillips screwdriver, and pull the air intake hose from the engine compartment.
Unplug the signal wire plugging into the ignition coil pack, by pressing the locking button and pulling it from the coil pack. Unplug the spark plug wire connecting to the coil pack, by pulling it upward with a slight twisting motion.
Remove the three bolts holding the coil pack to the engine and pull the coil pack up and off the spark plug. Remove the spark plug, using a ratchet, 6-inch extension and spark plug socket.
Remove the old spark plug from the spark plug socket and insert a new spark plug into the socket. Hand-tighten the spark plug, using the spark plug socket and a 6-inch extension. Apply 13 foot-pounds of torque to the spark plug, using a torque wrench, 6-inch extension and spark plug socket.
Coat the inside of the rubber boot on the base of coil pack with a small amount of dielectric grease and press it onto the spark plug. Tighten the coil pack bolts to 5 to 6 foot-pounds, using a torque wrench and socket.
Plug the signal wire and spark plug wire back into the coil pack and ensure that it "clicks" into place.
Repeat steps 4 through 8 until you replace all six spark plugs.
Reinstall the air intake tube and tighten the hose clamps with a Phillips screwdriver. Press the hoses into their respective inlets on the air intake tube and remove the masking tape labels.