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Whistling Noise From R32 Gtr Under Boost

chances
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chances Contributor

chances

Posted
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Hi, took my car out today.... put my foot down, as u do ... and anyway I could hear this weird air whooshing sound under boost, I popped the bonnet and found something apart, so I clicked it back together and went for another spin, same noise.

When I checked under the bonnet again the thing had come apart once again.

Ok so I dont know what its called but I took some photos, hopefully someone can help me, hopefully this is the cause cause it looks like i can tape it back together but I dont wanna cause im not 100% sure.

Max

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post-27650-1145783006.jpg

chances Contributor

chances

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all it is is the charcoal canister feed from ur throttle body.. just super glue it back together, and it should be ok. its popping apart under boost.

ok well i just superglued it back together after giving it a good clean, going to take it for a spin in 30 mins or so ...

you think this is the cause of the whistling noise tho ?

chances Contributor

chances

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Ok so i glued it all up and took it for a spin , same noise tho :(

car still goes hard and seems like the boost is a little higher .. or takes less time to get to full boost...

anything else i can try before i take it to the shop?? :)

edspaged2 Rising Star

edspaged2

Posted
Posted

you can check all your boost lines. maybe one has come off? its happened to my car a few times, but easily fixed with truckie ties (cable ties). IF not that then maybe a loose gasket? i had a 180sx which the exhaust flange gasket popped making it have a whistling noise.

oh the possibilites......

entelijint Contributor

entelijint

Posted
Posted

what it sounds like is one of two problems... 1) vacuum lines 2) intake piping

1) what i do to find the whistle is spray each line individually with some hair-spray. so spray one, wait for it to dry (10 seconds), rev up the engine... if it still whistles, check another line/connection. keep doing it until you find which one is giving you grief and then replace the bad one.

best part about hairspray is that it's water soluble, it's cheap, non-corrosive and hardens very fast.

2) I have had less experience with this issue, but the best way to check is to pressurize the whole intake system without the engine running (valves sealed and no other noise)... you can do this by using a valve-stem mounted inside a piece of capped off PVC piping. Just place the capped off piece of PVC piping with the valve stem in place of your air filters (cap off one of them), pressurize the system with a bicycle pump and listen for any leaks. you may have a cracked coupler that's causing air to whistle as it quickly gets vacuumed into your piping.

I recently had something like the whistling noise coming from my engine and it quickly progressed to a heavy whoosh. no boost issues, no sputtering, nothing. turns out one of my intake pipe clamps came loose and with every close of the throttle I wasn't using the BOV but rather a piece of piping was completely coming off and then sealing itself again.

check those two possibilities and see how things turn out :)

chances Contributor

chances

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Hey really weird ... took a mate to show him the noise ... gave it a little aswell... dropped him home, went inside for 5 mins anyway when i drove off the car sounded ok ?? no more whistling ... so i reved 2nd gear out and it sounds ok now.

This sucks in a way cause i want to know what it was :P ... can anyone suggest anything lol ?? :)

Max

tsmarlboro Newbie

tsmarlboro

Posted
Posted

I have a similar problem, running a SR20 over 10psi the turbo almost sounds like it is spoiling harder or with a distinctive whistle. the car still boosts the same but the noise is there, started when i had to drop the clutch comming out of a servo one night

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