Weird Engine Noise, Help!

[lukes146]

Hey guys,

As of yesterday my cars (R33 s2 gts-t) been making this really odd noise, it sounds like sticking a pen in a fan, it only happens under acceleration and mainly in 2nd gear either at 40kph or 60kph, like i said its a fairly loud buzzing pen/pencil in a fan noise...though it doesnt happen all the time, it was happening all this morning then this afternoon it didnt happen once, and its randomly happening tonight...

Any idea's? Also after i got my new exhaust (catback) put on my cars been smelling fairly bad, a mate told me new mufflers do smell bad for a while, is this true?

Cheers

[lukes146]

anyone? Please, lol

[paulr33]

i had this problem and it's my exhaust gasket is borked and needs to be replaced. does it sound like an exhaust leak at idle? ive never heard "a new exhaust will smell" before and mine certainly didnt when i got mine new

[lukes146]

I thougt that, but the noise comes from the front left hand side of the engine and no where else, very dumb founding! Well its going to the mechanics today to find/fix the leak hopefully the noise and figure out what that weird smell is, i just hope they don't charge me out of my now bankrupt arse.

[r33_racer]

Yeh new exhausts do smell, genereally all the paint or anti rust stuff sprayed on burns off or slowly cooks on. It generally goes away after a few days. If its been heavily coated on it can even smoke off. If its coming off your front/dump pipe it can give you the impression something is wrong when it starts coming out from under the bonnet

note. if its a brand name exhaust thats coated with like a hpc or something it probably wont smoke as much if at all.