What causes detonation or pinging?
Also called spark knock, preignition or detonation. If left uncorrected it can ruin the motor. Caused by either a lean fuel condition, carbon deposits in the combustion chamber, over advanced ignition timing, wrong spark plugs, or overheating.
Is pinging the same as detonation?
Detonation is spontaneous combustion inside the cylinder AFTER the spark plug fires. Detonation is also called an “Engine Knock”, “Knocking”, or “Pinging” because of the sound it makes.
Can running rich cause pinging?
No, a rich mixture will not cause an engine to ping.
When does the pinging and piston detonation occur?
It is possible for an engine to have both pinging and piston detonation happen, typically the pinging (also called pinking by the British) happens at fairly low rpm under acceleration..on an Airhead it typically happens between high idle rpm and ~3500 rpm.
When does pre ignition and detonation occur in a car?
Typically detonation happens at high power at considerably higher rpm, and is often harder to hear. Both pre-ignition (pinging/pinking) and detonation are abnormal events, although an occasional one to a few pings usually does no immediate damage, and may come from too low fuel octane for the engine.
Why does my engine Ping when under load?
I would think that on an engine with this small of a cam, this low of compression, and running 92 octane that it would take a LOT of advance before it would start pinging. Am I wrong and simply running too much timing for this engine combo, or is there something else that could be causing the pinging under load?
Is the vacuum advance still pinging under load?
Plugging the vacuum advance back in gives me 29 degrees of timing at idle and 45 degrees of timing at 3000+ RPM. These numbers don’t seem overly high to me, but I’m still getting pinging under load (not WOT), though not as bad as the day I brought it home.
What does engine pinging / detonation sound like?
What Does Engine Pinging / Detonation Sound Like. This is a car engine that has a ping. Also called spark knock, preignition or detonation. If left uncorrected it can ruin the motor. Caused by either a lean fuel condition, carbon deposits in the combustion chamber, over advanced ignition timing, wrong spark plugs, or overheating.
Can a boosted motor cause a piston to detonate?
Boosted motors generally require at least a 10% richer fuel mixture to combat detonation caused by the increased cylinder temperatures created with forced induction. It is possible to add too much fuel though, especially in low load areas like idle or cruise, and you can cause knock or even melt a piston if you are too lean at higher loads.
What causes a car to have a detonation?
Detonation is the event caused by excessively advanced ignition timing, or the use of fuel with too low an octane rating. Since many cars of 2010 vintage (and earlier) cannot have their timing manualy set, advanced ignition timing is an issue faced by fewer and fewer cars.
Plugging the vacuum advance back in gives me 29 degrees of timing at idle and 45 degrees of timing at 3000+ RPM. These numbers don’t seem overly high to me, but I’m still getting pinging under load (not WOT), though not as bad as the day I brought it home.