After filling with gasoline the car engine produce pinging sound.
Car Problem Diagnosis
A pinging sound is an indication of a car engine related problems there are several cause why the engine produce pinging sound. However, if you notice the pinging sound occurs after your car is filled with a gasoline then this means that the problem is related to the type of gasoline you just filled on the car.
Using low octane gasoline can triggered engine pinging sound, a low octane gasoline are those gasoline with an 88 octane rating or below, it is considered a low grade gasoline. This type of gasoline is combustible or can easily burn before it reaches the engine combustion chamber. When the gasoline self ignites, during the process, it produces pinging sound in which you can hear. Pre-ignition occurs when the engine is extremely hot or under a lot of stress.
Possible Cause of Engine Pinging Sound
Filling of low octane gasoline
How to Fix Pinging Sound on Engine
To fix the problem, try using a higher octane rating gasoline these are gasoline with an octane rating of 92 and above. You can easily identified if the gasoline you are about to fill the car are having a high octane rating, because the octane rating was displayed on the gas pump itself.