Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: gazza65 on 25 April 2009, 21:11:23
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hello everyone HELP PLEASE
i have a r plate omega v6 2.5 which has 98.000 on the clock. today i started it and it smoked for about 5 seconds (white grey colour) then stopped. but when the revs rise to 3000, the left bank (as you look into the engine bay) is rattling . the rattling gets worse as the revs increase. it is only the left side which is rattling though ??? when the revs are sat at idle there is very little or no rattle ... can anyone shed some light on this please as ive had omegas for many years and its the first time ive ever come across this. oh and apologies if this is in the wrong bit... gaz
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Could be a few things really mate, have you done any work on your car that could have caused the rattle?
When was the last oil change?
When did it last have a Cambelt Change?
Could do with updating your Profile too mate so we know where abouts you are :y
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hi, will update , newby error soz
no work that could have effected anything, oil and filter done 3 months ago, never uses oil or water cambelt changed 10 months ago approx, i do less than 12.000 a year.. any advice gratefully recieved cheers
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hi, will update , newby error soz
no work that could have effected anything, oil and filter done 3 months ago, never uses oil or water cambelt changed 10 months ago approx, i do less than 12.000 a year.. any advice gratefully recieved cheers
What work have you done then?
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nothing except for the usual sundries
oil and filter change
plugs
brake pads
discs all round
wishbones
aircon compressor
dash out and replace all those tiny bleeping bulbs
breather pipes
ooh and the coil pack (lovely job that !!!)
apart from the above , nothing serious
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Its not something silly like you have put the wrong leads to the wrong plugs? Have you put the leads on to the correct position on the dispack?
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No, as this was all done months ago.. she's been running fine for a long time. this has only started today.. i parked her up last night after returning from work, then this evening when i started her up she burped out this white (not condensation) grey smoke for about 3-5 seconds then stopped smoking . during this time i revved the engine to clear the smoke and thats when she started sounding rattly from what i discovered to be the left side as you look into the engine bay and the left "bank" this has only started today. she'd been running fine and dandy up till now...
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Could this be an Injector problem?
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nope, sounds like tappets
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If you think it is the lifters then try a few oil changes at around 500 - 1000 mile intervals :y
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hmmm... maybe , but why only the one bank ??? thats whats got me mucking fuddled !!!!!
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could be just one lifter,gone sticky. :y
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could be... would that account for the burst of smoke when i started it ???
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Burst of smoke on start up actual sounds like Valve Stem Seals to me...
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nope, sounds like tappets
Sorry i thought you'd ruled out tappets so was trying to suggest something else as i wouldn't have thought you'd get a puff of grey smoke if tappets to blame :-/.
Another thought i had was is the tapping sound a heavy pinking maybe from contaminated fuel as this may also explain the smoke :-/.
Just trying cover all bases :).
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ok..hi guys, back from my friendly mechanic.. we did an oil and filter change (just in case) correct oil as per spec, ran her up and within minutes i got the same horrendous knocking again.. looks like im in deep with this one.. he pulled out his trusty stethoscope and we had a listen to the left and right banks, you could really hear the difference, the right bank sounded what i would call correct, but the left side , you could hear the knocking very loudly and it didnt sound good.
anyone know where the best place to get lifters etc from and any ideas of price.. thanks guys, will keep u informed of this little drama just in case this helps anyone else.
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ran her up and within minutes i got the same horrendous knocking again.. .
Can you clarify, sounds like your saying it ran ok for a couple of minutes then started knocking?
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Yep, we did oil and filter change and ran her up again. Within five minutes I got the same awful rattle back. I've since been informed that this is a common problem. At best it's a case of clean the oil ways out and at worse it's a crack In the oilway and a very large bill....
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Any more progress on your problem...???
:question :y
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Yep, we did oil and filter change and ran her up again. Within five minutes I got the same awful rattle back. I've since been informed that this is a common problem. At best it's a case of clean the oil ways out and at worse it's a crack In the oilway and a very large bill....
Ow yes, that usual bull shite, if it was a common problem it would be a known fix!
Thats the usual sign of a muppet who knows not what about they speak!
Possibly an oil feed issue to that head, there are T vents in the head which control the oil feed to the head galleries for each cam.
Not convinced on it being a lifter as it sounds like it was ok when started.
When the cambelt was done did they do the idler and tensioner etc to?
Does it quieten down if revved or driven for some distance?
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The only way to idendtify the source of the noise is to adopt a system of elimimating items , not to go guessing at what it might be or not be, get yourself a cheap stethiscope and run the engine to try to pinpoint the noise, it may be the cam has broken a lobe or two or the lifters are failing but thats just guessing
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Daft as it may seem but why not lift the cam cover off and have a look to see if there is anything obvious lurking inside. surely the "mechanic" thought of this!
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hi guys , thanks for your input, we did stethoscope the engine and its as u look at the engine, at the back left is where the rattling seems to be... the oil and filter was changed as per specs. i have run it for the last week with the new oil... im not losing power and except for the one instance last friday ive had no issues with her smoking on startup.. the next stage has to wait till i get paid, flushing oil (yes i know this can be iffy and bring hidden faults to the fore but start with the cheaper options before the stripdown) then run her on 5w 40 or 5w 30 for 200 miles. if that doesnt work then we're gonna start stripping her out and investigate further..the car still idles lovely and quiet and its still only at the point where the revs reach 3000 that the knocking noise starts, i got no loss in power and the fuel economy is still the same. and yes the mechanic did think of the obvious but he wants to cover the bases before he starts doing the more expensive stuff..will keep u informed next time we do something. have a good long weekend guys.