Hey all, did a thorough check of the engine today since the weather was nice. 2 things I have stumbled across that I had not noticed before.

Weird hissing sound coming from the front right side of the radiator. All fluids are fine and the right colour. This is a video, please ignore the typical 6G74 tap

VIDEO http://tinypic.com/player.php?v=20jg39j&s=5

Lots of gunk around the front head where it joins the block. This was not here a couple of months ago.
http://img5.imageshack.us/img5/7053/22022009395.jpg (http://imageshack.us)
http://img5.imageshack.us/img5/22022009395.jpg/1/w800.png (http://g.imageshack.us/img5/22022009395.jpg/1/)

http://img5.imageshack.us/img5/8896/22022009400.jpg (http://imageshack.us)
http://img5.imageshack.us/img5/22022009400.jpg/1/w800.png (http://g.imageshack.us/img5/22022009400.jpg/1/)

Weird hissing sound coming from the front right side of the radiator. All fluids are fine and the right colour. This is a video, please ignore the typical 6G74 tap lol
http://tinypic.com/player.php?v=20jg39j&s=5

Thoughts and input appreciated.

Also, is this tyre in immediate need of replacement? I have a 400km road trip to see magna00 next weekend...

http://img530.imageshack.us/img530/7538/22022009396.jpg (http://imageshack.us)
http://img530.imageshack.us/img530/22022009396.jpg/1/w800.png (http://g.imageshack.us/img530/22022009396.jpg/1/)

First of all, I would not drive 4km on that tyre let alone 400k's

The oil leak is prob that end plug in your head, has an "O" ring in it that goes hard. Is a chep part to replace but is at the same time a bugger to do.

I better get the tyre replaced this week then. I will throw the spare on until its fixed up.

That tyre looks like it's about to delaminate.

aye it doesn't look healthy does it. Will get this one replaced during the week and get the other side done the week after. Supposed to be getting 380 brakes put on this coming weekend

Those pics of those oil leaks is nothing compared to some of the crap i found today on mine.

First of all, I would not drive 4km on that tyre let alone 400k's

The oil leak is prob that end plug in your head, has an "O" ring in it that goes hard. Is a chep part to replace but is at the same time a bugger to do.

mal, my centre plug had a tiny leak a few weeks ago and hasn't come back yet. I will get a quote to get the spark plug seals replaced.

ANOTHER thing. Took off the PCV valve on the front bank, i can blow air both ways. Surely these are a one-way valve? I can feel the valve closing, but its not closing fully.

ANOTHER thing. Took off the PCV valve on the front bank, i can blow air both ways. Surely these are a one-way valve? I can feel the valve closing, but its not closing fully.

No they are two way they are pretty much a little brass ball in a metallic casing, designed to equalise the pressure of the headcase vs atmospheric pressure.

right-o. Well it works then :)

If the rocker cover or spark plug tube seals are leaking, i SHOULD be able to get garage fix it under warranty.

Just got 2 new tyres fitted to the back from Beaurepaires. Wait for it: Durun F-Ones lol

Up side is they were $200 for both tyres fitted and balanced for 235/45/ZR17. Probably won't keep them for long, as soon as I have some cash I will throw some more GSD3's on before they are all gone. Durun's will be good for spares

Just got 2 new tyres fitted to the back from Beaurepaires. Wait for it: Durun F-Ones lol

Up side is they were $200 for both tyres fitted and balanced for 235/45/ZR17. Probably won't keep them for long, as soon as I have some cash I will throw some more GSD3's on before they are all gone. Durun's will be good for spares

If they are F1 spec they must be good

I could be totally off the ball but that hissing sounds like air suction through the TB. I know its from the wrong area but sounds like that.

if the hissing sound was from the TB, it would be running like crap surely? It is definately from the radiator region

If they are F1 spec they must be good

lol indeed. Watch me at Albert Park end of March. Hopefully gonna stick close the Redbull cars

. This is a video, please ignore the typical 6G74 tap

VIDEO http://tinypic.com/player.php?v=20jg39j&s=5

Hehe, you're car sounds like a bucket of bolts just like mine lol

yeah its quite annoying. Sounds sweet immediately off idle though

yeah its quite annoying. Sounds sweet immediately off idle though

Weird aye :nuts:

You can adjust the air screw on the TB and you will hear the difference in air flow throguh the TB which sounds like that, but i know this isn't what your saying as yours is from near the radiator.

The hissing noise sounds like a pretty major air leak somewhere in the intake, sounds like a hose isnt connected correctly or has split somewhere tbh.

I will have a good look over it today, got a big headcold so staying home. magna00, if i havent solved it, would you mind taking a look on sunday?

I will have a good look over it today, got a big headcold so staying home. magna00, if i havent solved it, would you mind taking a look on sunday?

Was going to suggest it yeah, can be a few things, just sounds like a vaccum hose leak or TB leak, easy enough to work out with some soapy water and a spray bottle.

HOLY *******, Your motor sounds like my 2nd gen motor, wierd! i even talked to someone about the hissing and they said it was an air leak from a hose near the vacuum pump or something like that on mine. but the thing is, its on the left side of the motor and i cant see anything a pump of anykind.....

well, hope it all works out for ya man

cheers stuart

For starters the PCV valve is not to equalise pressure at all. It is to stop a back fire allowing flame into the crank case if there is a back fire and blowing your rocker covers off!! It is normal to be able to blow in the direction of the manifold and back again, when a large pressure front hits the valve it will close up fine. Best way to test is with compressed air, try to blow air towards the rocker cover and the valve should close up. If not replace it, they are about 18 bucks from Reptiles

In relation to the hissing, try adjusting the idle with the big screw on top, may be this but also look for vac leaks, the only 2 that will give a loud hiss will be the pressure reg and the booster line.

thanks heaps mal, will check that out this afternoon. just a thought, I got a flowed TB from EZBoy and has been perfect up to now. Is it possible that the gasket has given up the ghost?

dammmn the tire cut looks mean!

its not on there anymore, got new tyres

Sorry to be a thread ninja, but is that hissing from the TB bad?

Hey guys, think I have a similar hissing sound in my car, coming from the drivers side of the engine bay (I think that's where it's coming from). Any thoughts on what it could be?

Just a thought as well, the timing belt on my car was done on my car just before I bought it (owner got it done on time rather than kms), could the other slight rattly noise I get at idle be the tensioner not on 100% correctly or something? Car's normal when driving, and has done it since I bought it.

It's due for a service in a tad under 1000kms (last service done 4000kms) so I'm going to be onto my mech to have a look, but any pointers from here would be awesome :D

Is it normal for the engine to sound like that (not the air sound)? May I suggest the following product:
http://www.nulon.com.au/products.php?productName=Lifter-Free_and_Tune-Uphttp://www.nulon.com.au/products.php?productName=Lifter-Free_and_Tune-Up

In terms of the air sound, is it constant or does it increase when throttle is applied? (you can apply throttle inside the engine bay). If it were after the sensors in any way, it would affect engine performance and if it were a vacuum leak it could either stall or have other running issues. If it were and performance was not affect, it must be all noise and little air. Either way since its not filtered it would be a good idea to find out the cause!

I'm guessing you've put your ear near were you suspect the noise is coming from and haven't located it?! It could be leaking around the airbox, if thats not the case then try with a rag (make sure you're careful where you put it! Wrap around the whole air intake line in steps, and if the noise changes you know its under that position of the rag - that will only work if its an external noise. It could be air whistling through a part inside the air intake tract...

Also, is this tyre in immediate need of replacement? I have a 400km road trip to see magna00 next weekend...

http://img530.imageshack.us/img530/7538/22022009396.jpg (http://imageshack.us)
http://img530.imageshack.us/img530/22022009396.jpg/1/w800.png (http://g.imageshack.us/img530/22022009396.jpg/1/)

Don't take this the wrong way, but I'm totally amazed that is a question that even needed to be asked in the first place!

Think about what your tyres do, think about the loads placed on them just at town speeds, and then ask yourself just how long and how well you would expect a severely damaged tyre like that one would continue to function? As has been said by others, that tyre probably isn't even safe to drive on down to the tyre shop to get it replaced.

PCV = Positive Crankcase Ventilation. Uni-directional valve and the PCV system's purpose is to "suck" the oil fumes out of the enigne guts and burn them with normal ingnition cycle to avoid pollutants escaping to air. At no pressure to any direction, the valve interior moves freely - well, should is it's clean and funtional.

Cut a 1 m piece of garden hose and place one end to your ear, sealed with your fist. Then use the other end as a stetoscope to pinpoint the exact location of the sound.

Yeah. Too many people check only tyre tread and consider it ok, if some left. Tyre side wall (on each side) is more important factor to monitor.

Don't take this the wrong way, but I'm totally amazed that is a question that even needed to be asked in the first place!

Think about what your tyres do, think about the loads placed on them just at town speeds, and then ask yourself just how long and how well you would expect a severely damaged tyre like that one would continue to function? As has been said by others, that tyre probably isn't even safe to drive on down to the tyre shop to get it replaced.

Think about the thread date.

FYI, the hissing sound was coming from the hose at the back of the manifold. vacuum leak i think