Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: mv6copcar on 05 May 2007, 23:36:22

Title: Tap Tap Tap....
Post by: mv6copcar on 05 May 2007, 23:36:22

i have a strange one...while driving on the motorway, and sometimes on the b roads.

the engine seems to tap really loudly when im just cruiseing-just feathering the throttle.

as soon as i give it some gas it stops,likewise when im breaking(using the engine to slow down)

sounds like if the tappets aren't under pressure(load) there tapping real bad.

Any ideas??

regards

Title: Re: Tap Tap Tap....
Post by: Markjay on 05 May 2007, 23:59:33

Leaking exhaust manifold gasket?

If the tapping is also evident while idling, can you indentify if it is coming from one side of the engine?

Title: Re: Tap Tap Tap....
Post by: Markjay on 06 May 2007, 00:01:43

By the way, I drove through Halstead today on the way to Sudbury and again on the way back...

Title: Re: Tap Tap Tap....
Post by: sounds2k on 06 May 2007, 10:53:34

hmmm ... I'm wondering if it could also be to do with the EGR as that activates on part throttle ... ??

Title: Re: Tap Tap Tap....
Post by: TheBoy on 06 May 2007, 11:56:50

Any particular rpm - thinking along lines of a resonance type rattle, eg heatshields...

Title: Re: Tap Tap Tap....
Post by: mv6copcar on 06 May 2007, 19:24:34

will check the exhaust gaskets,it is strange as it does only happen when at revs between 2,000 rpm -3,500 rpm. usually on the motorway.

yes to the EGR valve symptoms-only at part acceleration it taps.

bugging me though as its getting louder and more concerning

regards
carl

Title: Re: Tap Tap Tap....
Post by: STMO123 on 06 May 2007, 19:26:33

Try blanking the EGR valve, that will eliminate it.