What causes spark plugs to fire?
Spark plugs usually require voltage in excess of 20,000 volts to ‘fire’ properly. As the current of electrons surges across the gap, it raises the temperature of the spark channel to 60,000 K. The intense heat in the spark channel causes the ionized gas to expand very quickly, like a small explosion.
How can a spark plug boot cause a cylinder to misfire?
Over time, the rubber deteriorates and loses its insulation quality. The spark from the coil changes direction; instead of traveling through the boot, from the coil to the spark plug, it will shoot out the side of the bad boot and spark to the cylinder head. This causes that cylinder to misfire.
Are spark plugs constantly firing?
A narrow gap may give too small and weak a spark to effectively ignite the fuel-air mixture, but the plug will almost always fire on each cycle.
Where is the first cylinder on a Toyota RAV4?
An important thing to understand when finding the location of cylinder one is that it’s going to be the first cylinder in the firing order of the vehicle, and not the first cylinder that you might see when looking at the engine. The P0301 Toyota trouble code will trigger the Rav4’s service engine soon light.
What happens if you get a misfire on a RAV4?
The P0301 Toyota trouble code will trigger the Rav4’s service engine soon light. The vehicle itself may begin to run rough. It depends on how serious the misfire is. The vehicle may produce excess vibration, especially at lower RPM. Fuel mileage will suffer.
What causes a RAV4 to throw a p0301?
Vacuum leak – If your Rav4 has a vacuum leak, it can be very difficult for it to get the right air/fuel mixture. This will cause the cylinders to misfire and it’ll throw the P0301 if the leak is around that specific cylinder on the intake manifold. It’s easy (and kind of fun) to chase one down.