How to fix a misfire index 12 injector?
Finally I installed all brand new Index 12 injectors, and when I got to 6 I noticed that it simply fell all the way into the channel without any pressure needed to seat it down. I could then wriggle it slightly as it was totally loose in there. Drove the car and it immediately shut off 6 on first hard pull!
What happens when an engine cylinder misfires?
An engine cylinder misfires when it is unable to efficiently burn the air/fuel mixture in the combustion chamber. This problem leads to all kinds of engine performance issues: The engine jerks and loses power, and fuel consumption and emissions go up.
Can a misfire be a missing spark from an ignition coil?
The reality is that a misfire can be more than a missing spark from an ignition coil. Misfires that are below the vehicles threshold often pass unnoticed, but a constant misfire is hard to be overlooked by you or the engine management system.
Can a flashing check engine light be a misfire?
In a perfect world, a flashing check engine light for DTCs P0301 through P0312 would always be solved by installing a new ignition coil. If this were true, technicians wouldn’t need countless hours of diagnostics training. The reality is that a misfire can be more than a missing spark from an ignition coil.
What happens if you have a cylinder misfire?
Ensure you consult a good auto mechanic to fix the problem quickly if your engine is misfiring. This is because misfires reduce gas mileage and increases emissions, which can cause you to fail an emission test. Cylinder misfires can equally cause damage to other parts of the engine, like the oxygen sensors or catalytic converter.
What does a misfire code on an engine mean?
An engine misfire code might indicate a problem with a specific cylinder, or that the engine is running lean. Depending on the diagnostic tool being used, it may show how many misfires occurred within a certain number of cycles, or the engine RPM when the misfire occurs.
What does a random cylinder misfire DTC mean?
If the ODBII system is unable to identify a specific cylinder a P0300 random cylinder misfire DTC will set. But, neither of these mean that the ignition coil or any other specific part is at fault. It simply means that more testing is necessary.
What causes a misfire on a fuel injector?
The most common rich misfire is caused by a leaking or stuck open fuel injector. Rich or lean misfires can also be caused by a failed oxygen sensor. The engine computer monitors the oxygen sensor to report back the efficiency of the combustion event. A skewed or dead oxygen sensor can cause the engine computer to incorrectly add or subtract fuel.