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Old 12-12-2010, 03:21 PM
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Default 97 z34 spark plugs....

so... i have a book.... haynes..... enough said? lol and it doesnt explain anything on the plug replacement in the rear.... looks like the upper intake has to be removed.... anyone done this before?? ifso can you explain in depth please??? also the starter any tips? do i really need to drop cross member?
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Old 12-12-2010, 04:43 PM
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Ok, you will need to remove the upper plenum. Allow the engine to completely cool before changing the plugs.
-Remove fuel rail cover
-Remove (2) 8mm bolts holding the evap setup to the plenum
-Using a deepwell 10mm, universal, extention and ratchet, remove the (3) studs that hold the TB extention to the plenum.
-Remove the coil packs by removing the (2) 6mm bolts for each pack. Then just flop them out of the way.
-Unplug the ICM
-Remove the (2) 8mm bolts that hold the ICM bracket to the plenum
-Remove the small metal bracket that goes from the plenum to the EGR valve
-Remove the (7) plenum bolts/studs
-Remove the plenum
(Now would be a good time to replace both gaskets on the plenum. The lower gasket can be bought at the auto parts store. The TB extention gasket can be found at the dealer for about 3 bucks. Also change your wires too because this is the best access you will ever get to them)
-Remove the spark plug wires and plugs one at a time so you dont mix the wires up. I recommend AC delco double platinum plugs, since thats what came with the car. You need a 5/8 spark plug socket and a 6" extention to get the plugs out. Duct tape the extention to the socket so the socket doesnt stay on the new plug after you install it.
Once all your plugs and wires are changed, just reinstall everything the opposite way you removed it.

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Old 01-26-2011, 09:16 AM
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on this plenum gasket what is the torque specs? and tightening pattern?
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1997, 97, carlo, change, changing, intake, monte, plug, plugs, rear, removing, schematics, spark, studs, upper, wires, z34

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