I had replaced the plugs and wires and car was still slugish. I then replaced the battery because it was over 5 years old. After replacing the battery, the slugish engine was now running much better.showing little signs of slugish performance. Now, only when the engine is cold does it show slugish running but at a minimal level. what could be causing the engine to run minimaly slugish when it is cold?
Try checking all the filters,and check dist.cap it could have a hair line crack,and i would also check for vaccume leaks around all hoses
Many things can effect an engine during the cold.
I'd start by doing other basic tune up replacements. Such as an Air Filter, PCV valve, Fuel Filter, Oil Change. All things things keep an engine healthy.
Another thing to try is a bottle off fuel system cleaner. I recommend such brands as prestone, lucas oils, or STP. These will help eliminate deposits on the fuel system and help keep the fuel and air moving.
Did you replace the plugs with pregapped plugs? If your plugs aren't gapped right this could happen as well.
Hope these ideas help you out bud!
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engine skips and backfires
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