Celica Forums General Discussion General intake backfire! WTF!

among all the other problems my car is experiencing. My intake has now started to make back firing sounds when I shift from 1st to 2nd. Is this a timing chain issue or what?

Intake backfiring?? Your sure its coming from the intake? Is it a pop or a hiss?

it queefed.

i've never heard about intakes making a backfire sounds since there is no air coming out of it.

what the hell?

so what happens if your exauct backires? like when you hear a pop sound?
is that a bad thing?

^^^that should be normal.

Yeah, i dont think intakes backfire

if you have a newer celica you should have a timing belt(correct me if i am wrong)take a timing light to it and check the timing(obviously)then make sure your AFM is still attached to your intake properly. maybe the sensor has come off and making the fuel mixture to rich or something. anyway just a speculation. check the timing first...

If our cars were carbourated then it would be a possibility, but to my knowledge it's almost impossible for a fuel injected car to backfire(thru the intake). The only thing I can think of is pre-detonation within your manifold, and that's a REALLY bad thing. What I mean is a collection of fuel collectis within the manifold before it's injected into the cylinders...but that fuel is burning within the manifold, before it makes it into the injectors and cylinder. That can happen when running nitrous, or too low octane gas. Please someone correct me if any of this is wrong, don't want to lead anyone in the wrong direction.

rare occurance an EFI engine will backfire with improper timing. just check it to make sure

well when the new motor was put in the timing chain was off. Off so bad that air was getting sucked in the intake and exhaust at the same time. That alone was a bad sign. They claimed to have fixed the timimg but did not replace the chain. The sound is a really loud pop when im going from first to second in lift.

mine makes a hissing noise...like a BOV... at red lights i rev it so people think i have a turbo ...j/k...but the throttle body does hiss when i rev the engine, and between shifts

^^^ hhaha yeah sometimes people at my work ask me if I have turbo heheh

You cant backfire in the intake mainfold. Check timing it has to be off becasue your valves are opening at the wrong time. We also have timing chains not belts so you are going to have a lot to do to fix this! Good luck!

well im glad I have some of the celica bible. this sucks

thats not technically true in my old car it was running so richthat when i turned it off it would spit and sputter and shot smoke out the intake when you turn off your car there are exhaust valves and intake valves still open fire can come out of either

Mine does the same thing... when i first put my intake on and i stepped on the gas, i heard a "WHOOOSH" sound. i confused a lot of people with that:-D

you sure its not your ass backfiring?

oh yeah. my trd exhaust hasnt backfired once yet. it my intake farting