help with a weird noise???

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rob16v

Member +
when irev it slightly from cold it make a terrbile noise, sounds fine on idle tho, as soon as i give it a quick rev (like in the video) is sounds awful, if i slowly increase the revs (obviously not to much as its cold) is sounds fine.
once its been running about a minute its just as normal no odd noises just fine :)

http://www.youtube.com/watch?v=6iAlsght_dM
 
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Mikey4410

Member +
Sounds like a frog in ure airbox dude,lol .on a serious note that is a very strange noise and its like nothing ive heard before. .
can u at least pinpoint were its coming from?
 
corofin12345

corofin12345

Member +
theres a squirrel caught in the altermator belt.. lol


look at your waterpump pulley when reving it and see if its stopping
 
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rob16v

Member +
lol it pretty fucked up ey? i went to a garage on the way home n sed i cud be the water pump, its definatly coming from the back on the engine bay.

i was worried it was one of the cams not getting enough oil in start up but he sed no i wud no about it if it was that lol
 
corofin12345

corofin12345

Member +
check yourself mate.. the waterpump pully is located under the left engine mount... just see if its stopping as its reving with the noise
 
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rob16v

Member +
ok ill have a look once shes cooled down, do u think it sounds particularly serious or just a belt or something loose etc?
 
corofin12345

corofin12345

Member +
its not engine related anyway mate.. if its waterpump its a tricky enough job but can be done.. just hard enough to get 2.. if its not the waterpump just check the tension on the belts but does aound like the pully is ceasing
 
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rob16v

Member +
corofin12345 said:
its not engine related anyway mate.. if its waterpump its a tricky enough job but can be done.. just hard enough to get 2.. if its not the waterpump just check the tension on the belts but does aound like the pully is ceasing
Click to expand...

ok thank god its not engine related lol, water pumps arent that expensive are they? theres a couple on ebay for around £30 ish?
 
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rob16v

Member +
i just went and looked im sure its not the water pumo it sounds a bit like its coming from the exhuast :/ and the front of the engine bay on further inspection, i do have a new exhaust manifold coming very shortly, and that would explain why it goes when its hot
 
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rob16v

Member +
oh right :/ well surely the crack would close up and it get hotter? could the turbo be making that noise?
 
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rob16v

Member +
corofin12345 said:
no mate.. it will get bigger as it gets hot (expand)... just check all belts man and if you cant source anything there think about the turbo...
Click to expand...

i disagree about the cracking situation sorry im not geting shitty but if metal expands its gets bigger right? so it will expand and the crack will get smaller... when it cools down it contracts and the crack opens up more
 
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Llawgoch

Member +
rob16v said:
i disagree about the cracking situation sorry im not geting shitty but if metal expands its gets bigger right? so it will expand and the crack will get smaller... when it cools down it contracts and the crack opens up more
Click to expand...

exactly, the crack will close up as it warms up. so check the manifold.
 
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