i tmakes the car judder a i and the engine misfires
Number 1 cylinder is not firing properly probably a bad coil pack or a bad coil depending on the engine
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It could.
1) Have vehicle scanned to determine which cylinder is misfiring 2) Does vehicle have C.O.P. (coil on plug)? usually a bad ignition coil on that cylinder 3) Remove spark plug from that cylinder and do a compression test to determine if problem is internal to the engine (bad valve or ring).
it was bad
Bad plug? Bad wire? Bad piston or valve (do a compression test)
Bad wire, crack in the power pack by number 1 cylinder, bad sparkplug, oil down in the spark plug tube
cylinder 1 misfire, is probably a bad ignition coil, it plugs into the spark plug as a coil wire unit, if you have a v6 your #1 cylinder will start on the passenger side and #6 will end on the driver side if its a 4 cylinder #1 will be closer to the radiator and 4 will be closer to the front window, bad coil causes loss of power, and just a shakey ride, it can easily be replaced and cost about 30.00 bucks also think about changing your plugs while you're at it.
most likely bad o-rings or injector
Bad spark plug Bad plug wire Burned valve Bad piston Do a compression test to see if the problem is engine internal
It could be a number of reasons such as, A bad spark plug, A bad spark plug wire, A bad distributor cap and rotor, A bad fuel injector, A bad valve,
Bad Plug or coil pack.