Noisy Whining Noise After Cam Belt Change

[Japtastic-UK]

As the title suggests I have got a whining noise after doing a cam belt change, I've removed it and re installed a couple of times. I've also changed the tensioner and idler, all genuine parts. I've eliminated all the other belt driven parts by leaving them disconnected.

Could the belt be too tight or is it something else?

Cheers

[benl1981]

did you use genuine nissan - I hear that some of the guys on here have trouble with the gates being a bit noisier.

Its a bitch because if you dont get it right the first time you have to undo the crank bolt again to get the timing cover off right?

Edited August 22, 2007 by benl1981

[kudos.motorsports]

It is quite common that a belt that is over tensioned to whine, however as benl1981 has stated some belts are just noiser than others.

[Japtastic-UK]

It's a genuine Nissan belt, I guess I'm going to have to remove the damn crank pulley again then I hope that fixes it, what are the consequences if an over tightened belt?

[Godzilla32]

Yeah if over-tensioned you will commonly get a whining from it, however it generally quietens down after its done some km's.

Deren

[Japtastic-UK]

Ok it's seems odd that it's over tensioned as it has about 5mm play either side on the intake side and a very small amount, almost none on the exhaust side...

Could it snap if over tensioned, although it has some play in it?

Edited August 22, 2007 by Japtastic-UK

[heslo]

Just a guess, is your missus in the car when the whining noise starts?

Sorry, couldn't help myself

[GTR32GUS]

His English it might be him whining , "lost the ashes again"

Out of smart ass mode

Did u use the spring on the tension bearing to get the right tightness

[Japtastic-UK]

LOL you can keep the bloody ashes

I used the technique in the FAQ's for tightening so yes I used the spring, it is really annoying I think I have it tensioned right, to be honest I wouldn't feel right losening it off as it seems right, not sure what to do

[GTR32GUS]

If your confident u done every thing right it probably all cool , just a loud belt

And yes we will keep the ashes for years and years

[benl1981]

thats hard to say. I know with mine it was a bit like - "feels about right" aswell as following the procedure.

I thought I did mine pretty tight but no whining. I know other cars weve had done at the mechanic had a different engine note after the cam belt change - i.e. a bit more whiney

You used nissan belt..i see. Not sure mate.

You could take it to a mechanic to show them the tension. Just take the top cover off outside the garage after youve showed them the noise its making... if youre really concerned.

Edited August 22, 2007 by benl1981

[Japtastic-UK]

Well it drives perfectly, just taken her out, noise seems to be getting quiter already? I have got a a slight bit of play in both my exhaust and intake pulleys though which I didnt notice before but I may just be being too fussy, are they supposed to be straight as a dye or is a small amount of play acceptable?