Intake burp when you cut your car off...

[IBCNYA]

You know what im referring to, when you shut your car off and the intake releases a small amount of air through the intake that mimics a burp. Ive search and havent found squat about it, who knows what causes it. Ive had two accords and they both did this. Until recently my recent accord stopped doing it, seems i got better fuel milage before it stopped doing the burp. Now when we cut the car off theres nothing, no burp, nothing. Anyone know?

[illinois_erik]

mine does this too, i just figured it had to do with aftermarket intake..Inquiring minds would like to know

[S.W.A.T]

mine also does it but i thought its just the valves closing. or compression getting out

[cb7sk8rdude]

I figured it was just pushing out air that isn't needed.

[904drACCORDMANG]

ive never heard a car burp

[wed3k]

maybe it is the vacuum inside the intake manifold equalizing?

[Losiracer2]

well the engine makes compression when the pistons go up and down. Once you stop the spark and fuel there isn't anymore combustion and the explosions inside the cylinders stop, so its probably from when the intake valves are opening right as the engine is shutting off and the air getting pushed back through the intake manifold

[S.W.A.T]

well the engine makes compression when the pistons go up and down. Once you stop the spark and fuel there isn't anymore combustion and the explosions inside the cylinders stop, so its probably from when the intake valves are opening right as the engine is shutting off and the air getting pushed back through the intake manifold

that's exactly what i was thinking but couldn't explain it

[choppacity]

My car did this too after i installed a SRI! My friends always said that it was a sigh of relief from the car after i was done driving it hahaha

[MikeW]

One of only a few things I miss about my CB. My CG doesnt "burp". :/

[dj_ender]

Mine doesn't burp, but I can hear the engine sucking in air for a few seconds after I kill the car.