How to Change Spark Plugs

**Kirk** · 07-26-2007, 10:10 PM

This is self explanitory for some, but this will be useful to those who just need to be reassured :P

1. buy 6 new spark plugs from toyota (toyota part number # 90919-01178) or by choosing from section 1 above. also buy 2 crankcase hoses, toyota part number 12263-46010 & 12264-46010 (if needed)
2. with allen wrench (5mm) remove top cover of engine,10 screws.
3. remove the two crankcase vent hoses that run between the valve covers.
4. using small screwdriver, release the wiring harness clips.
5. unbolt the ignition coils (coil packs). there is a 10mm bolt on each side. there are 3 coil packs.
6. disconnect wiring from the coil packs. two connectors per pack.
7. lift out coil pack.
8. use deep well 5/8th socket to remove plugs.
9. gap (if needed) and install the new plugs (torque it to 13 ft/lbs). stock plug gap is .043 or 1.1mm, for bpu try stock gap or a lower setting like .035 if your engine is missing.
10. install coil packs... make sure you have a good seal on the plug.
11. connect wiring and re-clip wiring harness(2) to clip. make sure each harness routes *below* the crankcase vent.
12. install crankcase hoses that you bought (or previous ones if they are not cracked).
13. re-install cover.