Pinging? Wat Causes It

[philbaxr6t]

hey poeple just after some advice my dad has an 03 ba falcon just a futura and I drove it last night and noticed it was pinging pretty bad I think he run just unleaded but my question is wat causes pinging apart from low ocatne fuel im not 100% sure but isnt there a sensor on the motor that stops pinging or something any help would be great thanks heeps

[Mike XR6T]

wrong heat range spark plugs

lean fuel mixture

high intake temps

overheating

wrong pag on spark plugs

low octane fuel

exhaust restriction

carboned valves

advanced ignition timing

extremely retarded ignition timing

incorrect valve timing

variable valve timing malfunction

to high compression + plug heat range

incorrect tune(fuel mapping)

intake air leak

boost leaks

malfunctioning knock sensor

low fuel pressure/flow

knock sensor is what your thinking of but they will prevent some knocking(pinging) but not preignition(spark fired early-sounds the same as knocking) very unlikely to be faulty- very reliable

in the high temp days we are having(in adelaide anyway-45) provided engine is standard and in good condition...

ensure corrrect spark plugs are fitted

then replace fuel filter

then try 95 or 98 octane fuel if 95 fixes it I would just run 95.

in this heat most cars will generally ping VERy slightly.

hope im of some help

mike

[BFHOON]

When unburned fuel/air mixture beyond the boundary of the flame front is subjected to a combination of heat, pressure for a certain duration (beyond the delay period of the fuel used), detonation may occur. Detonation is characterized by an instantaneous, explosive ignition of at least one pocket of fuel/air mixture outside of the flame front. A local shockwave is created around each pocket and the cylinder pressure may rise sharply beyond its design limits. If detonation is allowed to persist under extreme conditions or over many engine cycles, engine parts can be damaged or destroyed. The simplest deleterious effects are typically particle wear caused by moderate knocking, which may further ensue through the engine's oil system and cause wear on other parts before being trapped by the oil filter. Severe knocking can lead to catastrophic failure in the form of physical holes punched through the piston or head, either of which depressurizes the affected cylinder and introduces large metal fragments, fuel, and combustion products into the oil system.

Detonation can be prevented by the use of a fuel with high octane rating, which increases the combustion temperature of the fuel and reduces the proclivity to detonate; enriching the fuel/air ratio, which adds extra fuel to the mixture and increases the cooling effect when the fuel vaporizes in the cylinder; reducing peak cylinder pressure by increasing the engine revolutions (e.g., shifting to a lower gear); decreasing the manifold pressure by reducing the throttle opening; or reducing the load on the engine. Because pressure and temperature are strongly linked, knock can also be attenuated by controlling peak combustion chamber temperatures at the engineering level by compression ratio reduction, exhaust gas recirculation, appropriate calibration of the engine's ignition timing schedule, and careful design of the engine's combustion chambers and cooling system. As an aftermarket solution, a water injection system can be employed to reduce combustion chamber peak temperatures and thus suppress detonation.

[SCRIBR]

carpark tuning?

jk danny

[BFHOON]

you bettter hide,

[SCRIBR]

I know one of his henchmen has gone out, so I'm safe for a bit

[R-SPEC]

Ha ha Danny you suck