MY FORD KA HAS A MISFIRE AND THE FAULT CODES ARE PO271 AND PO304. It started having a misfire on cylinder four. misfiring intermittently, also engine warning warning light coming on now and again.
It ran fine afterwards for a while yesterday, but now I'm getting oil on the spark plugs again.
If the misfire moved to cylinder number 1 (P0301), then you have determined that the coil pack is faulty and needs replacement. The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. There are several possible causes of misfire ranging from worn spark plug to faulty coils. I HAVE REPLACED THE LEADS AND PLUGS BUT HASNT REALLY HELPED. This code is similar to P0200 - P0203, and P0205 - P02012. 80k on the clock He has changed plugs and leads also in desperation has replaced the coilpack. Average failure mileage is 129,300 miles. I know its #4 cylinder misfire; it runs rough no matter what I do, day/night, hot/cold, low or high RPM.
The 2002 Ford Escape has 4 problems reported for misfiring. I recently had the check engine light come on and it was a cylinder 4 misfire. Runs okay for a short period and then starts to misfire. Cost of diagnosing the P0302 FORD code Labor: 1.0 The cost of diagnosing the P0302 FORD code is 1.0 hour of labor. The nice thing about it is that the P0302 has tracked the problem to a particular cylinder, which makes diagnosing the problems simpler than P0300, which means that the cylinders are randomly misfiring. I sprayed brake cleaner inside the cylinders and the spark plug wires as well as cleaning the spark plugs. P0301 should be considered a cause for concern, and can be a threat to the drivability the Ford Ka. Fiat 500 ECU fault causing misfire This Fiat 500 engine ECU will cause engine misfires across one or more cylinder after driving over 40mph/64kph. Possibly the idle speed regulator valve, as mentioned above. Still doing it at idle and when driving, although at times it runs OK. Cylinder 4 misfire appears to be a common problem on the Triton V8 especially on trucks. intermittent misfire on Ford fiesta zetec 1.4? The Engine Control Module (ECM) runs checks on all systems at startup, and many times a second while the vehicle is running. The simple things which this could be are most likely the ignition coil unit (There is no distributor on the Ka), which can cause misfiring, rough running and can also be temperature dependant. P0302 is a relatively common Ford Ka trouble code. It stands for: P0302: Cylinder 2 → Misfire Detected.