Weird Engine Sound On Neo...need Advice

[R33Turbo]

hey guys, i don't know whether it was after i thrashed the car or if it was always there but i realised i can hear a weird sound coming from the engine...As im not very familiar with the RB25DET NEO engine i don't know if its normal or not... The sound im hearing will probably be best described as like a VERY QUIET cricket(insect) crying sound? or like a quiet whistling sound from the engine area whether im accelerating or stationary but ofcourse its so quiet i can't hear it at all without opening the windows down and also out in the open... but i don't remember hearing this in my garage when starting the engine.

Is it just normal? If the description is bad i'l try explain again.

[SECURITY]

if its more of a tick tick tick noise then it will be your injectors = normal.

tap tap tap is lifters = normal.

[R33Turbo]

yeah? well if its normal then its great...but the sound wasn't much of a tapping or ticking, it was more like a whistling VERY QUIET but not constantly coming from the engine area...So would that be it or something else u think?

[driftmeister]

Check all vacuum hoses, mine was remove by accident near the brake pump area. Could be heard while idling, if driving / pulling hard then maybe it's the turbo going kaput. Just my 2 cents.

[joeyjoejoejuniorshabadoo]

Maybe be your thrust bearing on your clutch. Put the clutch in when sitting next to a wall and see if it goes away.

its no biggie, heaps of them are noisy

[Simmo1985]

Yeah, sounds like clutch to me. Do the above.

My clutch makes a fair bit of noise when the pedals not depressed.

[Abo Bob]

Split hose. Open the bonnet and stick your head right in there to find it by ear. Often they are split underneath where you can't see it and also being rubber they can split but without pressure they pull closed so you can't see the split. You may have to pull practically every hose off and inspect each end properly to find it.

[wolverine]

split hose x2

or loose hose clamp

[R33Turbo]

Thanks alot guys, i think its a split hose...it wouldn't be the clutch cuz i know that sound too...ill get it checked out...

[R33Turbo]

hey but the sound doesn't increase or anything when accelerating, i can just hear it when cars still or moving im pretty sure but its too loud to hear when moving so...would it still be a split hose then u think abo bob?

[FSTR32]

is it like a whirring noise that sounds like a fan cos if it does it would be the viscus fan...sometimes on the neo (happened to mine) the coupling gets jammed which means the fan stays on when accelarating. its the most annoyin sound. it kind of stops when you give it a boot up towards red line but yeh..im not sure cos your description is a bit hazy.

[sunnycoast]

hey guys, i don't know whether it was after i thrashed the car or if it was always there but i realised i can hear a weird sound coming from the engine...As im not very familiar with the RB25DET NEO engine i don't know if its normal or not... The sound im hearing will probably be best described as like a VERY QUIET cricket(insect) crying sound? or like a quiet whistling sound from the engine area whether im accelerating or stationary but ofcourse its so quiet i can't hear it at all without opening the windows down and also out in the open... but i don't remember hearing this in my garage when starting the engine.

Is it just normal? If the description is bad i'l try explain again.

I recently found these types of sounds coming from my neo and had it inspected by a mechanic.....He seems to believe its the injectors or the lifters...which are quite normal indeed.

If you still believe the problem is a whistling sound, 9 out of 10 times it'll be a loose or split pipe. Just found one on my car a few days ago, seemed to be the power steering air pipe....You wont really hear much of the noises coming from pipes with sucking vaccume...thus hearing the pipes like the power steering which push air into other parts of the engine.

my 2c...

Chris

Edited October 10, 2007 by SunnyCoast

[Abo Bob]

hey but the sound doesn't increase or anything when accelerating, i can just hear it when cars still or moving im pretty sure but its too loud to hear when moving so...would it still be a split hose then u think abo bob?

Could well be. I might be looking at the smaller diameter hoses first if I were you. Time to go have a look and eliminate this possibility for a start I think.