Question about 2005 Chevrolet Cobalt Sedan
I want to change the spark plugs on a chevy cobalt. what size wrench or socket does it take?
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Posted on Jan 02, 2017
5/8'' however its a special socket mae to remove an install spark plugs without damagin the porcelin (white part) of the plug, if you crack it the plugs heat rating will be affected.
Posted on Sep 28, 2009
Modern spark ;ugs can easily go 50,000 miles. If you think you need new plugs, go ahead and change them out. It certainly wouldn't hurt, and it might give your horsepower and fuel mileage a little boost. I would recommend using Iridium spark plugs from either NGK or Autolite. Personally, I use E3 spark plugs. They did wonders for my old '96 4.3 GM V--6. I would also invest in a premium set of spark plug wires, Don't scrimp on the wires, they are a vital link in the ignition system. A cheap set of plug wires can cause multiple misfires which would play havoc with the on board computer.
Posted on Jan 29, 2011
Hi and welcome to FixYa!
Most of the drain plug bolt size is 12mm. You might as well try that.
Hope this helps and thank you for using FixYa! Have a good one!
Posted on Mar 06, 2011
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