I have a 2004 chevy malibu 4 cyl and i had recently done an oil change and changed the spark plugs from ac delco to walmart platinum premiums and now its slower on acceleration it almost like bogs dow

SOURCE: I have a 2004 Chevy Malibu. Bogs down and stalls

make sure you have ngk or ac delco iridium plugs installed. Also common problem on the 2.2L ecotec is the cat plugging. Easy check is to remove the front o2 sensor (very easy 22mm wrench) and start the car and rev it. If it revs freely now and does not bog the cat is plugged. They are covered fed. emissions warranty 8yr 80k, all gm dealers stock the cats for the 2.2 ecotec.

SOURCE: car want start!

you crossed one of the spark plug wires check the firing order

SOURCE: Re-filling tranny fluid in a 2005 Chevy Malibu

There should be a fill cap locate drivers side down on top the drive axle. Check your book or call auto parts store for capicity

SOURCE: replacing spark plugs on a 2004 chevy malibu

2.2L Engine

1. Observe the following service precautions:
   
   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.
   
2. Turn the ignition OFF .
3. Disconnect the Electronic Ignition (EI) module harness connector.
4. Remove the spark plugs using a 5 / 8 inch spark plug socket.

1. 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).
2. Install the spark plugs and tighten to 15 ft. lbs. (20 Nm).
3. Apply dielectric compound to the spark plug boots and make sure no corrosion is present.
4. Install the ignition coil housing to cam cover and attachment bolts.
5. Tighten the ignition coil housing bolts to 89 inch. lbs. (10 Nm).
6. Connect the EI module harness connector. Push in until a click is heard and pull back to confirm a positive engagement.

Testimonial: "Thanks for the help, it was easy to change out the plugs with your info."

SOURCE: I want to change the spark plugs on my 2004 chevy

You can change the plugs if you would like, however those plugs last 100-150k miles. I would clean the throttle body and replace air filter. I have repaired this complaint many times on these vehicles. The throttle body becomes blocked by debris and lack of maintenance. Br very careful when cleaning. Make sure key is off and push hard on plate in throttle body clean by hand. This part is very hard to press has extreme amount of pressure behind it and you could badly hurt your fingers if becomes trapped under plate. You may want to have someone else there just in case you should slip or not be able to press and clean it at the same time.