Conquer P0300 Code An Expert's Guide to Engine Health

Check your spark plugs first, even though you just replaced them not too long ago. Mine starts fouling every 3K miles and with new plugs, it ... I have 134 miles on the clock, and have been getting misfire code since day one. Taking it in to dealer on Monday. If the O2 sensor gets a bad reading, it will cause a cylinder misfire. They should last at least 100k but you're getting close to it so it's ... The check engine light came on which turned out to be a P0300 code (Random/Multiple Cylinder Misfire Detected) The car runs fine. I have a 2010 Patriot Sport 2.4L and I'm looking for help and advice on how to properly diagnose and fix a P0300 code. It could be multiple things, cap, rotor, plugs, wires, coil, distributor - some new ones are crap, could even be bad connections, or problem with the fuel ... This diagnostic trouble code (DTC) indicates that your car's computer has detected an engine misfire that's random and/or appearing on multiple cylinders. Most likely a fuel injection issue. You'll need to run a diagnostic scan on it. It would also be wise to check fuel pressure and a multi-cylinder compression ... The issue is either O2 sensor related or possibly failing/weak fuel system components. Will eventually check head bolts regardless of O2 outcome and plugs will ... I have been battling the dreaded P0300: Random Multiple Misfire Detected. So far I have replaced plug and ignition coils, and the intake and exhaust solenoids.