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Re: changing spark plugs
As you know the front ones are rather easy to get to, but the rear bank is a bear..the best way is on a lift but you can get to them using a 3/8 rachet a 3inch extension and the plug socket.. take the air tube off the throttle body.. reach under the throttle body behind the engine you will feel the plug wires that way.. once you get the wires off the plugs are a pain but changable..
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check compression,with engine running remove h/t leads 1 at a time to diagnose weak cylinder,check that cylinder has the same amount of spark ( jumps the same gap as others )try changing the plug from crook cylinder to a good one and note if miss follows that spark plug or stays with same cylinder,can do same with injectors but only perform one procedure at a time so you can determine which one works.
You can reset the A/C by disconnecting battery for 10-15 minutes. If you do not fix problem with A/C then they are just going to start blinking again. I would have a thorough A/C check/ service performed to find out why it is setting a code in the system before you clear it.
if you don t see any spark plug wires then your motor has coil packs(black colored boxwith 2 small electrical wires) located on top of motor 3 on one side,3 on the other.disconnect negative terminal on battery,then disconnect wire connector at each coil pack and remove 2 screws that hold down coil pack, pull gently straight up and plug is right there below coil pack