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lildrummer420 · 11-22-2011, 01:15 PM

I just replaced the spark plugs in my car about a month ago and ever since i have been getting 4MPG worse. Could i have put in the wrong type of plug? what is the best type of plug to use? I have a completely stock 2004 L4 Alero.

11-22-2011, 01:15 PM	#1
lildrummer420 GX Member Join Date: Oct 2011 Location: United States, Georgia Posts: 5	spark plug problems I just replaced the spark plugs in my car about a month ago and ever since i have been getting 4MPG worse. Could i have put in the wrong type of plug? what is the best type of plug to use? I have a completely stock 2004 L4 Alero.