new plugs, rough idle
new plugs, rough idle Changed the plugs, wires and fuel filter this past weekend, 125k miles on car, and now the car has a rough idle. No arc no vacuum leaks etc. checked the wires all tight. Not sure what to look for now. My buddy said it sound like a cylinder is dropping off. Any suggestions
Joined: Nov 2001
Posts: 34,643
Likes: 2,571
From: Schiller Park, ILL Member: #317
Was it doing this before you did the plugs and wires? Or did this problem start after you did the plugs/wires?
If after, then it stands to reason that something is wrong with the new parts you have installed. You said you've checked the wires for tightness, but it's possible that a wire might be bad. Or that plug gaps might be off. Or that a spark plug may have a hairline crack that could have happened during install (especially if you dropped any while installing them).
What brand of wires did you use?
If after, then it stands to reason that something is wrong with the new parts you have installed. You said you've checked the wires for tightness, but it's possible that a wire might be bad. Or that plug gaps might be off. Or that a spark plug may have a hairline crack that could have happened during install (especially if you dropped any while installing them).
What brand of wires did you use?
TECH Fanatic
Joined: Aug 2006
Posts: 1,407
Likes: 63
From: Knappa, Oregon
Wait until the engine is cold enough to touch the exhaust ports. Start the car for a minute or less. Touch the exhaust ports again. You will probably find that one exhaust port is still cold and the others are warm.
Recheck your work on the cold cylinder.
Recheck your work on the cold cylinder.
Joined: Nov 2001
Posts: 34,643
Likes: 2,571
From: Schiller Park, ILL Member: #317
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