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GerOttman · 70-79, M
@Lostpoet how old. classic cars with carburetors were prone to run on. newer fuel injected digital engines not so much. it sounds like you're describing "run on", a kind of detonation where the spark plugs don't fire but the fuel keeps detonating on its own.
Does it kind of stop with a gasp when its done?
Does it kind of stop with a gasp when its done?
GerOttman · 70-79, M
@Lostpoet then it's electronic fuel injection. when you turn the key off the spark plugs stop sparking and the fuel pump stops pumping, the engine stops. if you have a hot spot in one or more cylinders the last few drops of fuel in the lines can ignite with a weak flash. once the fuel runs out it stop with a kind of gasp at the end. you are now at the limit of what little expertise I can offer.
WolfGirlwh0r3 · 36-40, T
GoFish ·
Did you just buy it?
Quetzalcoatlus · 51-55, M
@Quetzalcoatlus my number one saying when papi asks to use my Chrysler vs his truck 🤣
DanielsASJ · 36-40, M
Rats inside
HikingMan · 56-60, M
It's more or less the thermal contraction of the hot metal parts.
When the engine is running, exhaust manifolds, catalytic converters, and exhaust piping can reach as high 1,200°F. Causing the metal to expand. Once the engine stops, the sudden drop in temperature makes the metal contract unevenly. This causes small metal surfaces to rub, and shift, against mounting points, producing distinct clicks or ticks
The sound is usually loudest right after shutdown and fades over 10–30 minutes as components cool.
It's not usually indicative of an actual problem or something to worry about.
When the engine is running, exhaust manifolds, catalytic converters, and exhaust piping can reach as high 1,200°F. Causing the metal to expand. Once the engine stops, the sudden drop in temperature makes the metal contract unevenly. This causes small metal surfaces to rub, and shift, against mounting points, producing distinct clicks or ticks
The sound is usually loudest right after shutdown and fades over 10–30 minutes as components cool.
It's not usually indicative of an actual problem or something to worry about.