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Engine Tuning All technical chat regarding the 2JZ |
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27th July 2005, 06:44 PM | #1 |
Old Timer
UK Spec - Auto Join Date: Sep 2004
Location: dorset
Posts: 1,880
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This Howto is intended to be a guide to changing the spark plugs on a Twin Turbo Supra
Tools & equipment need: 6 x spark plugs Allen key - 5mm Torque Wrench (not essential, but preferable) Spark plug socket head Socket wrench Small wrench extension bar (~3" Copper grease Firstly, with reference to the following picture, remove the bolts marked using the allen key. Remove the oil filler cap & then remove the plastic cam cover: You will now be able to see the coil packs & their associated cables. Replace the oil filler cap. Remove the 2 PCV hoses marked in the next picture. It is a good idea at this point to replace these for new ones as the originals may well be quite old & brittle. Now undo the retaining clips which hold the wires to the coil packs in place (marked in picture) & move them to the side, there will be 3 sets of 2 clips: Undo the connectors to the coil packs, there are 6: You should now be able to move the coil pack wires fully out of the way & to the side. Undo the bolts holding the coil packs in place, 2 each end of each coil pack - 3 coil packs: Remove the coil packs taking note of their orientation. You will now be able to access the spark plugs. Remove the spark plugs using the socket wrench, extension bar & spark plug socket head. Fit the new spark plugs, smearing a little copper grease on the threads of the plugs. Torque the plugs to 13ftIb If you don't have a torque wrench, tighten the plugs up until you feel the point of resistance (i.e. where the thread starts to tighten), then give them a 1/4 turn. Refit the coil packs & their bolts, reconnect the cables to the coil packs & locate the cables into their retainers. Fit the new PCV hoses, replace the plastic cam cover & refit the bolts holding it in place.
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