I can not find any instructions on how to access the back three spark plugs on a LS Sable DOHC. I know I have to remove some of the fuel system (throttle assy) but I do not know if I need a certain tool to disconnect the fuel lines. I have checked on how much it would cost to replace them and the labor alone is $189. Is it really that hard to do?
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Re: Spark Plug replacement instructions
It really is that hard, (1.5 hours) no special tools required except a good assortment of hand tools and flex head extensions. Buy a plug boot removal tool, if you tear the plug wire boots you will really be in a pickle. I never took the fuel lines loose, did the job many times, but my hands looked like hamburger when I was done.
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Find where pipes are going into heater rad(usually near the bulk head) disconnect both, I usually use a spark plug to insert into hose so as not to loose water from engine block, use hose from house tap insert into heater rad and flush until clean.
VERY SIMPLE,JUST REACH YOUR HAND AROUND THE REAR OF THE ENGINE,GO FROM THE PASSENGER SIDE,PULL OUT THE THREE SPARK PLUG WIRES AND GET A SMALL EXTENSION WITH A SWIVEL 5/8 SPARK PLUG SOCKET AND TAKE THEM OUT.
actually if i was u i would take it in cus to get to the back 3 spark plugs u have to drop the back of the motor down about a foot or so until u can reach the plugs, or take the intake manifold off. either way its a pain in the ****. but its up to u. good luck to u and i hope this helps u
Ignition coil sit on top of valve cover, follow one of the spark plug wire's, there will be six of them three in the front of the engine on the radiator side and three on the back of the engine next to the fire wall, the spark plug wire will plug right into the coil.Mark your wire's before removing from coil pack so they go back on the same way.
On the 3.5L the Electronic Coil Packs are located over the Cylinders/Spark Plugs. These Coil Packs have seven (7) bolts on a Black Cover. Remove these seven (7) bolts, removing the Cover. Access to the three (3) Front Spark Plugs is now gained. The Rear three (3) Spark Plugs is the same, however it is in a tight spot near the Fire Wall.
Standard Rules: Some things are not Applicable for your specific engine. Use a Spark Plug Socket to remove and install Spark Plugs. Replace (remove) one Wire Connections at a time from one Spark Plug. Replace One Spark Plug at a time. Use Anti-Seize Grease applied moderately to the threads on the new Spark Plug. Using a Socket (with a extension) START all installations of all Sprak Plugs using your hands. This prevents cross-threading and stripping of the threads inside the Heads. Standard Torque 15-20 ft-lbs. Replace the One Wire Connection to that One Spark Plug. Replace that One Wire Connection to the Ignition Coil Connection. Go onto the next Spark Plug using the above Rules. Repeat.
For the 3.5L Firing Order: 1-2-3-4-5-6 Cylinders: .....(back) 1......3.......5 2......4.......6 ....(front)
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yes about the upper intake and the only way i know how to check the coils is with a engine anilyser or if the check engine light comes on then you can have the codes pulled and that will tell you which cylender is missfiring this engine has a indevidual coil for each spark plug so thares 6 of them and thay slide right down over the sparkplugs
You need to drain some coolant. Loosen and disconnect water lines by the firewall- the ones in the way of your wire change. u need to get a diagram of the firing order of the engine so that those wires are correctly connected to the coil packs.