Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: jas200 on 24 July 2009, 00:03:37

Title: hissing noise coming from back of engine
Post by: jas200 on 24 July 2009, 00:03:37

hi folks,
          finally got the omega running nice and quiet, only to hear a hissing noise coming from the top back of the engine, are there any breather pipes about there, if not that any adeas? its a 2.5 v6.

thanks for your time j

Title: Re: hissing noise coming from back of engine
Post by: Darth Loo-knee on 24 July 2009, 00:08:21

You have the 4 pipes on the rear of the "Black Ecotec" Breather, plus you have a couple of vac pipes too :-?

Title: Re: hissing noise coming from back of engine
Post by: feeutfo on 24 July 2009, 09:04:14

as said, but would bet on vac pipes. Pay close attention to large black pipe plenum to brake servo where it touches/rubs the bulk head, and the small 4 mill ish diameter black pipes that run round the same area. Years of chafing on near by parts can ware them through. Breakers for spares. Tape bodges dont last. Check your multi rams are working when done.

Title: Re: hissing noise coming from back of engine
Post by: Entwood on 24 July 2009, 09:07:11

Spray the area lightly with carb cleaner with the engine running, when the engine note changes, thats where the leak is (carb cleaner is sucked in and burns as "extra" fuel"). once leak fixed wipe down with paper towel.

Result : Sorted problems and a nice clean engine :)