Help Something Is Making A Bad Noise In My R33

[tek_01]

hello fellas just noticed a weird sound coming from the egine bay of my r33 a couple days ago

it would only be audible when i turn on the car and its still cool but once it warms up it goes away

but now its getting real bad and never goes away

noise sounds like its ticking like injectrs do so when its idling its ticking about 4 times a second. and i rev it it gets faster and faster, especially when im actually driving and hit boost it goes so quick its like a sort of whistle

i thought it was the BOV faulty somehow but i listened under the bonnet this mornign and it seems like it is coming from the back of the engine close to the firewall where the spark plugs are around there in the camshaft housing. could even go as bad as saying it sounds like there is no oil getting to the tappets

also what is that thing ontop of the motor right at the back it has a connector either side, is it the ingiter or something? could it be that?

need some help as all mechanics are closed today so i dont want to destroy it by thetime it gets looked at

thanks

[tek_01]

just to add

the noise is getting VERY loud, as in it is louder than my car eveyone car hear it, it is there all the time now non stop

i got a screwdriver and put one end to any suspect parts like the rocker covver, turbo etc but i couldnt hear anything ticking

help =(

[T04GTR]

hmmmm.

when is it louder. whilst acelerating or cruising or decel. when on boost does it get real loud? like bang bang everytime the engine rotates?

[tek_01]

ok as it is now when the car is idling it is a fairly loud ticking/tapping noise sort of like what the injectors sound like but much louder (maybe tappets)

when i accelerate this gets louder and also quicker so it sounds like it is in sync with the engine rpm

when i get off the throttle it sounds like when it is idling as in it gets slower and softer

its at the point now where i cant drive the car the noise is so bad/loud

also when on boost it is going so fast its turned into a sort of whistle

ill tell u one thing, this is a noise that really concerns me its not just some random little ticking u may hear.

[wrxhoon]

Hmm.... Another RB with a spun bearing???

[tek_01]

also have an exhaust leak from the manifold, looks to have a bolt snapped off or not put in, could it be that? going over a mechanics place tonight for a quick check to see whether i should take it to work or not tomorrow

[muffla]

could be a tappet come loose somehow. i doubt its because theyre not getting oil cuz theyd be completely buggered by now. it could be that leak in the manifold too. my mate had a suzuki sierra which had a bit of a gap between the manifold and the head at one end of the manifold and that sounded kinda the same. the only problem with that is you should probably be able to smell fumes while youve got ur head under the bonnet when the engine is running. its either that or something else has come loose inside the motor. prbly a good idea not to drive it. best to get it checked out straight away.

[skylinecouple]

Well that helps. yes, certainly exhaust leak.

[tek_01]

i never new a leak could sound so bad, will have it checked soon i hope

[muffla]

try blocking the hole up with something (like tinfoil) then see wot happens?

[muffla]

prbly ought to get that hole fixed anyway, you could be loosing precious exhaust pressure to spool up the turbo (if u have one) not that it would be making a huge difference. lol.

[tek_01]

cant really get to the hole easily and its bloody hot too

yeah i got a turbo, was going to fix it when the turbo failed so i can do it all in one

will let yas know what it is in about half hour (going mechanics place now)

[tek_01]

YAYYYYYYYYY, its only the exhaust manifold gasket and possibly a couple studs broken

its still ganna cost about $400 for parts + labour but thats much better than a new head or whatever

thanks for everyones help