I get knocking & ping noise coming from the fuel injectors
A little kid in the trunk with a hammer
Crank Shaft.
Usually, the price will dictate what is the best injector cleaner. "Injector cleaner" is misleading since most "cleaners" you buy do not clean but rather prevent more buildup in the injector tip. An auto shop does have a cleaner though where the fuel system is disabled and the car ran on a bottle for 15 minutes. Knocking and tapping differences are is the question of the century. A tapping noise will come from injectors or the valvetrain in general and is much more subtle than a knocking noise which usually is much louder cam or crankshaft noise indicating failed bearings.
Im trying to find the same answer as your are.
knocking noise
If its gasoline it would be a problem in your head causing the piston to slap against the cylinder walls. If its a diesel engine then the knocking is caused by the .001 to .002 second delay between the fuel injector closing and the compression/combustion of the fuel
NO. A knocking noise in the engine is a problem in the engine.
A bad harmonic balancer can cause a knocking noise. The harmonic balancer doesn't actually produce the noise, but it can cause the noise in the engine.
If the slapping noise gets progressively faster as the tires turn, check for a large nail or rock in the tire tread.
When your engine has a knocking noise, it could mean that a rod has been thrown. It could also mean you are low on oil.
if its a tick not a knock, its probably lifter noise. its not too terrible, once the weather warms up, i would recommend getting some thicker oil, if it fixes it, then im probably right.
DOES IT HOLD GOOD OIL PRESSURE WHILE HOT AND IDLING? SOUNDS LIKE MAIN BEARINGS.