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What Is Pinging ?

charlieR34

By charlieR34,
in Engines & Forced Induction

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Guest 40th-edition

Guest 40th-edition

Posted
Posted

Pinging is the engine detonation the fuel to early on the stroke causing the noise!

such as if u use unleaded instead of premium.. when it goes hot the fuel will pre ignite and cause this.

u will hear a noise like a knocking or loud buzzing or how ever u want to describe it.

to resolve it try using a higher octain fuel.. or u can get an addertive which helps (its pritty much octain)

u should beabe to notice it when u r reving high and if the engine makes a weird noise.. ushaly atr high revs ( around 5000 depending)

hope this helps!

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The Dan Grand Master

The Dan

Posted
Posted

Ping is pretty much a shortened term for PRE-IGNITION. I kinda sounds like a shaker in a spray can but more dull. As above but a few things to add.

Pinging can be caused by ignition timing too far in advance, hot spots in the cylinder head (usually caused by dodgy porting), lean fuel mixtures or not enough octane rating in the fuel being used. All of these things can cause the fuel/air mix to pre-ignite.

To rectify it you need to find out which one is causing the problem and alter it. Most of the time it is poor fuel quality or ignition timing. You will find that it will ping more so when the engine is producing most of its torque so it will disappear before 6000rpm most of the time.

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gtr660hp Experienced

gtr660hp

Posted
Posted

uneven combustion causing hot spots and percusion on the pistons-can be caused by many factors or combination of these-will result in the end of an engine if it continues over time. Warning - an engine can be knocking and you wont detect it with the human ear so always have it tuned correctly by a pro. So many backyarders chuck on a big turbo and other mods then shoot the boost through the roof and drive around without a good safe tune on it-then Ka Boom...wallet deflates :D

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r33_racer Grand Master

r33_racer

Posted
Posted

Can also have piston knock, caused by too loose clearances when an engine is rebuilt, and just under load the piston can rattle on power stroke, even when fuel is good quality and timing isnt too far advanced. So having a good tight engine helps keep that form of knock to a minimal level.

Our old rb25, destroyed the ringlands off std pistons, and we had a race meeting the next weekend...out she came quick rebuild with some acl forgies and new bearings and usual crap, went for tuning and it wouldnt stop knocking, take all the timing out, loads of fuel no boost and it would still knock. go figure.

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