What can cause a misfire in a Subaru?
What can cause a misfire in a Subaru?
In many cases, this type of misfire can be fixed by simply replacing faulty components like the spark plug, ignition coil, or a sensor. The fuel is another possible cause of misfiring. If your engine misfires more at lower speeds and less at higher speeds, it’s probably due to a fuel system problem.
Can a bad O2 sensor cause cylinder misfire?
If an oxygen sensor or mass airflow sensor is failing, it could give incorrect data to your engine’s computer, causing the misfire. When a vacuum line is broken, it can cause a fuel-injected motor to misfire.
Can bigger injectors cause misfire?
However, the bigger the engine, the less you’re likely to feel a misfire. Struggling to start – Too much or not enough fuel is provided to the engine. This can also cause stalling or prevent the engine from starting altogether. Fuel Smell – If an injector is leaking, you may detect a smell of gasoline while running.
What causes the p0302 misfire code on a Subaru Forester?
Raw fuel is also passing through the cylinder into the exhaust. Mileage may suffer as well when your Forester has P0302. P0302 is a cylinder specific misfire code, which means that cylinder 2 is misfiring and causing the code.
What does the p0302 code on the engine code mean?
The P0302 code means that cylinder 2 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 2. If the problem persists more tests need to be done to diagnose the problem, see “Possible Causes”.
What causes a misfire in engine cylinder 2?
Engine Cylinder 2 is Misfiring. When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position ( CKP) sensor signal to vary, the Engine Control Module ( ECM) can determine that a misfire is occurring.
