Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Diamond Black Geezer on 06 September 2016, 08:59:42
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So after lavishing attention on the old girl, there's two odd little whines/whistles appeared since the service...
Whistle - Hear it in the cabin - more so on pass side? Sounds like a Clanger in a box. Yes, a whistle, high-pitched but quiet, which rises in pitch depending on revs. My theory is it's vac related. I have changed the purge valve, and no more petrol smell on startup. Fuse pulled for SAI. The front multiram has been changed too. Nothing else vac related (that I can think of) has been changed.
Whine - Fractionally audible from interior, obvious when stood next to car. Coming from the front end. Disappears under any revs, so only occurs at idle. Pulley/ belt related? Will check for anything rubbing against the aux belt, but nothing apparent with a visual inspection last night.
Well, I'm confused! :o ???
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Suppressor on back of 246 head still connected :-\
Causes a whistle directly proportional to rpm... Most apparent through radio ;)
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Oooh, like your thinking... Explain further, please! Can't picture it in my head...
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Been digging around OOF and it looks like the suppressor would only be an issue on MW and LW radio? Fairly sure it's there all the time, radio on or not... Will check properly when I get my car back (been stolen to take her nan out today ;))
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Suppressor on back of 246 head still connected :-\
Causes a whistle directly proportional to rpm... Most apparent through radio ;)
I didn't know there was a suppressor on the head, thanks for that. I have suffered a radio whistle on fitting aftermarket plug leads, cure was to fit old Vx (presumably resistive) leads.
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Oooh, like your thinking... Explain further, please! Can't picture it in my head...
Do a search for misfiring manual :y
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I have done as you suggest, but can't find anything to do with what sounds like my problem? I'll see if this noise occurs with the radio off soon as I get my car back, and report back. No clue what the squeal from the front of the engine can be, however, that's got me confused and a bit worried. (I'm always worried) ::)
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Suppressor on back of 246 head still connected :-\
Causes a whistle directly proportional to rpm... Most apparent through radio ;)
only fitted to 2.6/3.2 :y
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That'll be why I couldn't remember seeing it, then! ;D
Back to Plan A, then... something vac related? in my head I'd say it's a whine coming from the new (well, second hand) purge valve. But I'm loathe to swap it back as the interior doesn't smell of petrol anymore for 5 minds after startup! :D
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Suppressor on back of 246 head still connected :-\
Causes a whistle directly proportional to rpm... Most apparent through radio ;)
only fitted to 2.6/3.2 :y
Fair dos :y
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Sorry, I've now got an image in my head of Doctor Gollum crawling around in my engine bay muttering "where is the suppressorses? Myyyy precious suppresorses must be mines!! They took it, the Opel thieveses!"
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Sorry, I've now got an image in my head of Doctor Gollum crawling around in my engine bay muttering "where is the suppressorses? Myyyy precious suppresorses must be mines!! They took it, the Opel thieveses!"
Baptised ;D ;D ;D
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Sorry, I've now got an image in my head of Doctor Gollum crawling around in my engine bay muttering "where is the suppressorses? Myyyy precious suppresorses must be mines!! They took it, the Opel thieveses!"
You've met him! 8)
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Sorry, I've now got an image in my head of Doctor Gollum crawling around in my engine bay muttering "where is the suppressorses? Myyyy precious suppresorses must be mines!! They took it, the Opel thieveses!"
You've met him! 8)
Not sure he's had the misfortune :D
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:D ;D :D :o
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I have a whine but only when booting it after a kickdown its so annoying
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And mine apparently went away all of yesterday, my Miss DBG was driving her all day and couldn't hear anything. Ahhh, intermittent faults, dont you just love them?!
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So after lavishing attention on the old girl, there's two odd little whines/whistles appeared since the service...
Whistle - Hear it in the cabin - more so on pass side? Sounds like a Clanger in a box. Yes, a whistle, high-pitched but quiet, which rises in pitch depending on revs. My theory is it's vac related. I have changed the purge valve, and no more petrol smell on startup. Fuse pulled for SAI. The front multiram has been changed too. Nothing else vac related (that I can think of) has been changed.
Whine - Fractionally audible from interior, obvious when stood next to car. Coming from the front end. Disappears under any revs, so only occurs at idle. Pulley/ belt related? Will check for anything rubbing against the aux belt, but nothing apparent with a visual inspection last night.
Well, I'm confused! :o ???
Something trapped under the plenum on re-assembly perhaps?
Was the purge valve visibly faulty, I get a petrol smell on startup too but can find no leaks.
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It was possible that the FPR to TB pipe had been trapped under the plenum since my last disassembly, though I'm not 100% it seemed to be a bit crammed in under there. But all very nice, now. that I'm sure, I was fastidious and careful, took my time.
I know there was much debate over the purge valve on here, but there was definite difference in flow between the old and new (new one flowing much better, old one was like blowing up a baloon, you had to force it, would be hell for, say, a smoker of 20 years!) And the one-way valve seemed to work better, too, seemed like slight weeping on the old one. :)