If your engine is pinging, it means that the air/fuel mixture in the cylinders is detonating prematurely. This can cause damage to the engine over time, so it's important to fix the problem as soon as possible.
There are a few ways to tell if your engine is pinging. One way is to simply listen for a metallic sound coming from the engine when you accelerate. This is usually the most obvious sign that something is wrong.
Another way to tell if your engine is pinging is by looking at the spark plugs. If they are covered in soot or have abnormal wear, it's a good indication that the air/fuel mixture is detonating prematurely.
Finally, you can also use a diagnostic tool like an oscilloscope to check for pingin