What causes multiple cylinder misfires?

A misfire from two or more cylinders can be caused by many reasons from a faulty ignition system, fuel system, or internal engine failure. Many times, P0300 occurs when there are worn out spark plugs, spark plug wires, or a faulty ignition coil.

What does it mean when all cylinders are misfiring?

Damaged, worn, or bad spark plugs, or a weak ignition coil can cause a loss of spark, and therefore, a misfiring cylinder. If the fuel injector is clogged, dirty, or has an air leak, the low pressure will affect all of the cylinders, rather than just one cylinder.

What to do if your Acura has a misfire?

We replaced that with a bolt and gasket (washer) from Acura (PN 90009-R70-A00 and 94109-14000 if you were curious). After all of this work, the engine is still spitting out the same codes. The engine’s running much more powerfully now, so it’s like an amplified version of the original problem.

What is the Check Engine light on Acura CL 3.2L?

I’m working with our 2002 Acura CL 3.2L. The engine is running very rough at idle (it sounds like a muscle car). I have two lamps illuminated on the dashboard. The Malfunction Indicator Lamp (MIL) is flashing, and the Traction Control System light is solid. NOTE: Some bulletins refer to the MIL as the Check Engine Light (CEL) as well.

Why does my Acura DTC sound like a muscle car?

The rough running of the engine seems restricted to idle. This is when the majority of the extra vibration and “muscle car” sound occurs. When the vehicle is driving at any speed, the rough running doesn’t seem apparent. In fact, it seems to drive like normal.

Why is exhaust gas clogging on my Acura?

Purely running off of the feedback of the lamps, I did some online research and found this to be common issue with Exhaust Gas Recirculation (EGR) System Port Clogging. It didn’t take much to pull the intake manifold cover plate off of the engine and have a look.