We got the spark plugs out of our 2004 Chevy Silverado just fine. Got 7 of the 8 replaced easily. The back on on the passenger side of the engine is giving us fits! We can't get it to go in and connect to the threads! We've tried from above, from below, using a mirror to verify that nothing fell inside by mistake, we find no reason it shouldn't go in! Any ideas???

there isn't an accumulator. You have a evaporator ( in the dash), a condenser (at the front of the car), A dryer ( usually on the passenger side), and a compressor( mounted to the engine). Which one do you want to replace?

Still sounds off. Take the #1 spark plug out, put your finger in the hole and have someone bump the starter around. As soon as you feel pressure, or a whoof sound (air coming out the hole), stop cranking. Look at your timing scale on the crankshaft pulley: You should be very close to the zero scale on the pointer. Put a socket and wrench on the crank pulley if needed to turn the crank on around (clockwise) until the notch or line on the pulley is right with the zero mark on the pointer scale. Now you are at top dead center of the compression stroke on #1. Take off the distributor cap. The rotor should be pointing directly to the #1 spark plug wire tower. Now that you have #1, follow the firing order around in the direction the rotor turns to check if each of your plug wires are in the right place. Firing order should be stamped on the intake manifold. If a 350 engine, firing order is 1-8-4-3-6-5-7-2. You might need to check that, only going by memory from couple days ago when I had to do this. The cylinders on the driver's side are 1-3-5-7, front to back. On the passenger side, cylinders are 2-4-6-8, front to back.

Hello! The cylinder order on the 6.6L diesel engine in your vehicle is as follows: 1, 3, 5, 7 are on the driverside, with 1 being the front of the engine and 7 the rear. 2, 4, 6, 8 are on the passenger side 2 in the front and 8 is all the way back. #4 Glow Plug is therefore on the passenger side second one back counting from the front...

Firing order:
1 - 2 - 7 - 8 - 4 - 5 - 6 - 3

Guru....Saailer

firing order for 5.7 v8 is 1-8-4-3-6-5-7-2 mostly all of the chevy v8s are the same firing order. the rotor button in distributer turns clockwise, the cylinder numbers are 1-3-5-7 on drivers side, 2-4-6-8 is on passengers side. To get started get your distrutor cap[new one] look on the top you will see a #1that's where you begin you must know if if rotates clockwise or counter clockwise start in that direction then follow the firing order and cylinder line up. good-day!! if cap is not marked, just pull out #1 plug, put a straw or similar in plug hole on top of piston. turn engine over by crank in front of vehicle with a wrench, when the piston comes to the very top just before it starts going down. this is tdc. and rotor button should be pointing to #1 wire on dist, cap. follow from there. good-day !!

it may just be the heat shield on the muffler, they are held on with tack welds that break easily. when the truck is cool crawl under it and look around the muffler and catalytic converters for a loose heat sheild.

You can replace them in any order, but the Firing Order is 1,8,4,3,6,5,7,2

1-8-4-3-6-5-7-2 The #1 spark plug is the front spark plug on the drivers side and the cylinder location in order from front to back on the drivers side is 1-3-5-7 and on the passenger side it is 2-4-6-8. The ignition rotor rotation is clockwise.

If your Distributor cap is not numbered then replace the new wires, or transfer the old ones to the new distributor cap one wire at a time. Identify the #1 spark plug wire and start from there.

The #8 coil and spark plug are located on the drivers side rear of the engine. You will need a 7mm socket to remove the bolt that holds the coil down. After the bolt is out, pull the coil upwards and remove. Next you will need a 9/16" spark plug socket to remove the spark plug which is located in the hole that the coil came out of. The spark plugs in a 5.4L engine are sometimes frozen into the engine. If it is very hard to turn the plug, try spraying some WD-40 down the hole onto the plug and let it soak in for a while. Do not try to force the plug to turn, it will break and a special plug extractor will be needed to remove it.
Hope this helps you!

looking from the front of engine if its not a transverse engine(side-ways installed), the plugs on the drivers side from left frt to firewall are 1-3-5 and the passenger side from frt to firewall would be 2-4-6-

Since you didn't state whether it is a V6 or V8, I'll give you both.

V6 -4.3Liter
Firing Order is 1-6-5-4-3-2
Distributor rotor turns Clockwise
Number 1 spark plug tower on distributor cap, faces the front of the engine.

->Drivers side, spark plug order in engine, starting from the Front going back:
1-3-5
->Passenger side, spark plug order in engine,
starting from the Front going back:
2-4-6

If it's Electronic, the distributor cap has a Left side, (Drivers side), and a Right side, (Passenger side)
Starting from the Front, going back on the Left side,
3-1-5
Starting from the Front going back on the Right side,
2-4-6

V8-5.0, 5.7, and 7.4Liter
Firing Order is 1-8-4-3-6-5-7-2
Distributor rotor turns Clockwise
Number 1 spark plug tower on distributor cap,
faces Front, towards the Drivers side.

Electronic distributor cap has two sides. Drivers, (Left), side and Passenger, (Right), side.
Starting from Front going back on Drivers side,
1-7-3-5
Starting from Front going back on Passenger side,
8-2-4-6

Spark plug order in engine, starting from Front going back, Drivers side:
1-3-5-7
Spark plug order in engine, starting from Front going back, Passenger side:
2-4-6-8