Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: bighed on 15 April 2008, 07:07:52

Title: Knocking noise
Post by: bighed on 15 April 2008, 07:07:52

Firstly i would like to apologise for all the questions. So heres two more  ;D I have got a light knocking noise coming from bottom of engine/gearbox on tickover.  :-/ When I slowly raise the rpm the noise goes after about 2000rpm. It also disappears after a good run (10 miles to work)  :-? Any ideas guys??

Also I had an oil leak from cam cover gaskets which was leaking quite badly. The oil used to start smoking from the heat of the engine. This was sorted on saturday but im still getting smoke from engine after a good run (again 10 miles to work) Is this the old oil burning off still??

TIA  :y

Title: Re: Knocking noise
Post by: ians on 15 April 2008, 11:25:09

Yes the old oil can take a while to burn off.

Title: Re: Knocking noise
Post by: Tab on 15 April 2008, 11:46:08

yeah old oil burning off the manifold, mine took about 2 weeks to completley disapear.

Title: Re: Knocking noise
Post by: Dazzler on 15 April 2008, 15:36:31

The noise may well be a tired oil pump, hence when revs increase and or the oil gets hot it stops :-/

Title: Re: Knocking noise
Post by: bighed on 15 April 2008, 16:40:55

How much and how easy to fix??

Title: Re: Knocking noise
Post by: MutantCav on 15 April 2008, 16:45:17

If I knew where the oil pump was I could sort you one for very little money mate...I'm sure someone will be able to tell me :)

Title: Re: Knocking noise
Post by: bighed on 16 April 2008, 08:59:57

so do we defo think its the oil pump. Will ask one of the lads at the meet on sunday for a second opinion before I rip her to bits again  :y

Title: Re: Knocking noise
Post by: mkaminski100 on 16 April 2008, 11:31:04

Autobox oil pump? It's...inside the autobox. http://www.omegaowners.com/forum/YaBB.pl?num=1183142571 STEP 9 - oil pump.
It might be TC as well but I don’t know what kind of sounds it makes when knackered.
It's really hard to tell where the knocking sound is comming from (might be engine). You have to get under the car and check it (safety first)

Title: Re: Knocking noise
Post by: bighed on 17 April 2008, 07:05:13

mmmm, oil pump in gearbpx. never thought of that.  Would it be tc while engine is stood still tho?? Wouldnt it just make a bad noise while it was working if fubar'd  :-/  

Title: Re: Knocking noise
Post by: bighed on 18 April 2008, 08:15:16

Anyone  :-/   :'( :'( :'(

Title: Re: Knocking noise
Post by: Kevin Wood on 18 April 2008, 09:25:53

FWIW, I have noticed a light knocking at idle from the sump area that disappears as soon as the engine is lifted above idle on several V6s I have worked on. I have no idea what it might be but I doubt it's worth tearing the engine apart for.

Kevin

Title: Re: Knocking noise
Post by: Jay w on 18 April 2008, 09:48:59

My old 2.5 used to do it, never bothered me, never got any worse

Title: Re: Knocking noise
Post by: bighed on 22 April 2008, 10:49:04

Hmmm. It became louder when I did an oil change on her last saturday so must be something oil related. Ok thanks for replies guys  :y

Title: Re: Knocking noise
Post by: Marks DTM Calib on 22 April 2008, 10:52:17

Quote

Hmmm. It became louder when I did an oil change on her last saturday so must be something oil related. Ok thanks for replies guys  :y

Any history of the engine having flush through it?

Was the oil very dirty at any point?

If yes to any of the above then its worth dropping the bottom sump pan off (not hard) and checking for crudd in the pan and on the oil pickup.

Title: Re: Knocking noise
Post by: dene wakefield lad on 22 April 2008, 13:02:13

change asap :-/

Title: Re: Knocking noise
Post by: bighed on 23 April 2008, 10:39:33

Will do thanks. Would i need to get new oil and filter as was only changed a week ago. :-/

Title: Re: Knocking noise
Post by: hotel21 on 23 April 2008, 11:11:21

If you are dropping the oil again and then removing the bottom pan I would suggest oil and the filter.  Filters are not dear.

Title: Re: Knocking noise
Post by: bighed on 24 April 2008, 10:18:10

Right thanks  ;)