Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: madmax on 19 August 2007, 20:21:52

Title: rattling sound coming from manifold
Post by: madmax on 19 August 2007, 20:21:52

hi all started my car this morning and was greeted with a loud hollow sounding rattle seemed to be coming from underneath manifold at the front died down when idle dropped down after warming up but still noticable..i know its not much to go on but anyone got any ideas....1998 mv6

Title: Re: rattling sound coming from manifold
Post by: ians on 19 August 2007, 20:31:50

failing manifold gasket? (hopefully not cracked manifold).   Noise often reduces as it warms up so symptoms seem to fit.

Others more familiar will confirm or otherwise..

Title: Re: rattling sound coming from manifold
Post by: hotel21 on 19 August 2007, 20:53:35

Have you checked the heat shields for security?  A jubilee clip or two can sort it if the securing bolts are rusted through, causing them to vibrate a bit when at idle or critical revs as the engine revs drop down.

Title: Re: rattling sound coming from manifold
Post by: madmax on 19 August 2007, 21:04:50

i,ll check these out in the morning its peee..ing down outside at mo, thanx for the advice ill let you know what i find tomorrow!!!!!!!!

Title: Re: rattling sound coming from manifold
Post by: omegabeast on 19 August 2007, 21:09:03

My old one used to do this.  It was the manifold gasket. Used to go when the car was warmed up and the metal had expanded with the heat!

Matt  [smiley=beer.gif]

Title: Re: rattling sound coming from manifold
Post by: madmax on 21 August 2007, 15:20:22

further investigation and it seems to be fan belt tensioner i havent took the belt of just moved tensioner forward with spanner and noise went...glad it werent cambelt side!!!