What is the best way to replace the spark plugs in a 2004 chevy malibu classic? this will be my first time doing this and all manuals advised thus far have proven to be quite vague, and less than helpful. any information you may be able to pass along is much appreciated. thanks!
Search for the engine model ECOTec 2.2 rather then Malibu. It is very easy to replace the plugs, they are DEEP inside the engine so you will need a 6" socket extension for the spark plug socket. Needle nose pliers were required to retrieve the socket on the first plug. Don't push down hard on the plug, just enough to engage the nut. Full screen photo sequence is available at: http://www.gaownersclub.com/forum/showthread.php?t=99068
The only thing i will recomend is to make sure the engine is complety cold before doing it, because more of this cars come with aluminum heads and if not cold before doing it might damage spark plug thread, i can't remebre very well the easiest way to replace them, but if it is a v-6 motor will be easier by removing the two top engine mounts on top of radiator and the gently lift transmission by rear side of car and this will give you more clearance on the rear plugs, and if plug wires are hard to remove tunr it rt to left and then puul them of, if they brake don;t try to fix them just replace it.
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Thanks, Glad I can try, however, its very easy to locate. if there's a plastic trim/cover over the engine remove-it and set aside. The Spark Plugs is sitting right below the Ignition Cassette or Coil as it is also referred to, it may say ECOTEC on the cover, secondly, remove the electrical harness on right side of the cassette, it's just above the oil filler cap, then remove the four, 10 bolts and pull-up the Ignition cassette. All four Spark Plugs will be there for easy removal and replacement. Reverse actions will be in order... Here is what you will need to perform the repair: 3/8 in ratchet, 5/8 in Spark-plug Socket, 3/8 in extension 12 ins long and a #10 socket. For your 2004 Chevrolet Malibu with a 2.2 liter ECOTEC Engine. Hope this DIY was helpful!
There are four things required for an engine to run: air, fuel, compression and properly timed spark. If you have fuel and timed spark, the only two variables are air and compression. Air is not the likely problem, and compression should be good unless you blew a head gasket or the rings in all four cylinders. How did you determine that you have fuel and spark? Those are the two most likely problem areas.
Find out the model of the light bulb you use and go to an auto parts store. Tell them you need a plug for bulb type xyz. Then just cut and splice the wires together, matching which wire goes where from the faulty plug. Should get the part for under $10.
The spark plug gap for this application is 0.60 Although, the spark plugs are Iridium plugs and are pre set by the manufacuter and should not be tampered with due to damaging the diode on the plug. The correct application for this vehicle should be AC DELC0 IRRIDIUM SPARK PLUGS.
Allow the engine to cool before removing the spark plugs.
Attempting to remove spark plugs from a hot engine can cause the spark
plugs to seize. This can damage the cylinder head threads.Clean the spark plug recess area before removing the spark plug.
Failure to do so can result in engine damage due to dirt or foreign
material entering the cylinder head, or in contamination of the
cylinder head threads. Contaminated threads may prevent proper seating
of the new spark plug.Use only the spark plugs specified for use in the vehicle. Do not
install spark plugs that are either hotter or colder than those
specified for the vehicle. Installing spark plugs of another type can
severely damage the engine.
Turn the ignition
Disconnect the Electronic Ignition (EI) module harness connector.
Remove the spark plugs using a
inch spark plug socket.
Do not coat spark plug threads with anti-seize compound. If
anti-seize compound is used and spark plugs are over-torqued, damage to
the cylinder head threads may result.
Inspect the gap on the new spark plugs, re-gap the plugs as required. The spark plug gap specification is 42 inch. (1.0 mm).
Install the spark plugs and tighten to 15 ft. lbs. (20 Nm).
Apply dielectric compound to the spark plug boots and make sure no corrosion is present.
Install the ignition coil housing to cam cover and attachment bolts.
Tighten the ignition coil housing bolts to 89 inch. lbs. (10 Nm).
Connect the EI module harness connector. Push in until a click is heard and pull back to confirm a positive engagement.