my 2000 mercury cougar 4 cyl began knocking or tapping
was running fine drove 10 miles waited 2 hours and it began knocking of tapping sputtering poor performance idles rough. have changed plugs and wires checked fluids plugs and wires made no improvement
Any lights on the dash?
Yes check engine and it turns out that it was the ignition coil problem solved! thanks
Search Mercury Cougar Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Mercury Cougar Experts