Other items needed, and not included: Coils LS2 or LS1, plug wires, coil harness. STEP 11 Remove the bolts that attach the steering shaft to the steering rack and fire-wall steering column yoke. STEP 10 Pull out the dipstick, unbolt the dipstick tube, and remove it from the car by pulling the tube up and out of the engine block.

Remove the spark plug wires to avoid damaging them during header instal-lation.

This can be done by splicing in a new pigtail (offered through EFI Connection) or by using a terminal removal tool and new connector to swap connectors (also offered through EFI Connection). You'll also have to change the harness connector for the new sensor.

The correct crank sensor will be made available for $100.00.

To remove this wire, just insert a flat head screwdriver in the space between the spring and the plug and pry it carefully away. Most fuel injector wiring plugs are held securely in place by a springy wire (see pic).

Each injector will have a plug at the top (or on the side near the top) that connects to the wiring harness.

These are the originals as the truck has reached 100,00 + miles. I have changed plugs in a variety of cars and boats, but for the life of me I cant budge the wires to come off from the plug end.

I want to change the plugs in my 2003 Yukons 5.3L but cannot pull the wires off the plugs.

FiTech's Ul-timate LS kit comes with a knock sensor control and is custom cam friendly. Wiring the system is made easy with a custom wiring harness that uses existing factory coil packs and sub harnesses.

tem is compatible with 24X and 58X crank sensors, LS1-LS3 cam sensors, and compatible with car and truck coils.I could just leave the plug out and crank. At least I would know my wiring was correct in this way as I?m sure it?s a timing issue. Ideally I would like to remove #1 sparkplug, signal #1 to trigger and check the spark plug jumps the gap, then repeat for other 7 cylinders.

Most ignition systems are robust enough to withstand such voltage backups intermittently but not on a prolonged basis. When a plug wire is physically disconnected from a spark plug, the high voltage surge from the coil cannot follow its normal path to ground through the plug wire and spark plug, so it passes back through the coil.

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