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YOU NEED TO NUMBER TAG ALL SPARK PLUG WIRES ON COIL PACK MODULE IN ORDER SO YOU PUT THEM BACK IN ORIGINAL PLACE.REMOVE ALL PLUGS WIRES FROM COIL PACK.THEN DISCONNECT THE ELECTRICAL CONNECTORS ON COIL PACK MODULE THEN REMOVE COIL PACK.NOW YOU HAVE MORE ROOM TO GET TO BACK PLUGS.YOU NEED A LIGHT.A SMALL MECHANIC MIRROR.YOU NEED LONGER 3/8 EXTENSION.PROBABLY PLUG WIRE BOOT PULLER NOT MUCH ROOM TO PULL THE SPARK PLUG BOOT WITH HAND.
If you got small hands and long arms, you can change the rear spark plugs with the right extensions and swivel spark plug socket. You can get to all three from the top and leaned over the passenger side of the car.
If you need more room, your going to have to tilt the engine forward. Here is how it's done, with the transmission in park and parking brakes on with a block at the BACK wheels. Undo the two dog bone motor mount at the front of the engine, once disconnected with a friend.
Push the car forward once your release the parking brakes, push it just far enough that you tilt the engine forward and not in to the radiator. Once that is done, put on parking brakes and place block at the BACK wheels again, so we don't lose an arm.
This should give you more room to get to the rear spark plugs and yes everything is done by touch to get the plugs out and most likely your going to have to replace the spark plug wires. The old ones will be harder to remove then the front ones and a spark plug wire pliers will works best to removing them.
Thank you for using fixy and be safe, after spark plugs replaced, just reinstall everything the revers.
I actually just recently did this myself to my 2004 GTP. Changing the spark plugs is relatively easy. Keep in mind that the transverse mounted engines, (or sideways) are a pain in the rear since half of the spark plugs are between the engine and fire-wall with little room to work. Also, with the spark plug wires you will need to twist the boot (end that connects to spark plug) of the wire about quarter to half a turn to unlock them from the spark plugs. This had me pulling my hair out before a friend told me about the lock and everything worked out fine and simple. Lastly, make sure to rub a small amount of "Dielectric Compound" on the end of the spark plugs that connect to the wires to give them better conductivity. I purchased Autolite Platinum spark plugs and Dielectric Compound from Autozone for only $38 total and the repair took about 30 mins
Your going to need a spark plug socket with a swivel, extension, and a spark plug wire pliers. You can access the spark plugs through the wheel well. you can from the top but that takes too long and you can't get to all of them from there. You can raise the front end just enough to give you some room in the wheel well with out removing the front wheels. To get to the spark plugs, move the wheel well splash guard up and out of the way so you can access the spark plugs on the side of the engine. One the passenger side is the easy one to work out and should take you under 20 min to do all three, change them one at a time so you don't mix the spark plug wires. On the drivers side is work on the #1plug (towards the front) and #5 (towards the fire wall) first and do #3 plug last. Spark plug #3 is behind the shock tower mount, you need to loosen it first with the socket, then remove the socket and remove and install the plugs by had. It should take you almost 10 min just to do that plug and a cramped hand. When replacing the spark plugs, use anti seize so it's easier to remove the plugs next time and use platinum plugs so your good to go for 100,000 miles unless you have a plug failure due to running too lean or rich. Bring the truck down and place the ignition to the run position for 30 seconds and turn off for 10 seconds and then start and let idle for 1 min then go for a test drive to reset all the engine management sensors. Good luck and hope this helps. Keep me posted, be glad to help.
You need to use the spark plug socket with a built in swivel and a extension. Once you crack the spark plug loose, remove the socket and remove the plugs by hand. The plugs will not come out with the socket still being used, there is not enough room to between the engine and shock tower mount. Take your time, the fingers get's cramps. It sounds like this is your first time changing the plugs, they all come out easy from the wheel well. You can do it with out removing the wheel, just move the inner splash guard up out of the way to get to all the plugs. The only other hard thing is the removing the plug wire boot from the plugs, I find it easy if you have a plug wire boot pliers. The pulling on the wire just ends up in replacing the spark plug wire set. Good luck and hope this helps. Keep me posted, be glad to help, this should take about 30 min to do all of them. Plug #3 being 10 min alone LOL.
Get a spark plug socket with the hex head on the top. Put it on the plug and use a wrench to turn it. You should purchase a deep 5/8" spark plug socket. Those are a pain you know where! Try not to let the plug wires sit on the exhaust manifold either or your will be replacing them again soon.
Good luck .....Scott
Changing spark plugs in your Cad is not an easy thing. I tried it using the chiltons manual and it took five hours. Just in case you want to try it yourself you will need to start by removing the engine cover (two screws easy to locate). Next step is the tricky and tedious part. A black cylider with small vacuum tubes located at the rear center next to firewall needs to be removed. It is attached to the engine by an somewhat difficult to reach bolt and a almost impossible lower bolt that can be acessed underneath if you can find it and have hand of a ten year old. I removed it from bottom of vehicle than tightened it after from the top this is by far the most difficult of the process watch your knuckles. This vacuum valve is connected to a silver hose which needs to be unscrewed to remove valve two screws attach it from the bottom. This is another difficult one. Make sure the your socket is firmly onto the wrench, one socket remains hidden after it fell off, making a extra trip to the store neccasary after losing it. Move valve out of the way as best you can and what remaing are 8 bolts holding on the "ignition coil assembly". These shoul be taken out in a "W" pattern: top bottom top bottom. Remove these and remove panel another very tight fit. Remove spark plug boots and take out spark plugs and keep in order so that spark plug damage can be assessed according to corrisponding cyclider. Repeat for front plugs and reverse steps to reassemble. Spark plugs come pregaped. Start with the rear plugs, they are the most difficult, and you have a better idea how much time it will take.