Omega Owners Forum - Engine noise, terminal? Pt2

Kevin Wood Global Moderator Admin Team Offline Posts: 20377 Alton, Hampshire Gender: Drives: 3.2 MV6 (LPG), Westfield	Re: Engine noise, terminal? Pt2 Reply #15 - 03. Apr 2010 at 17:56 ... and, I suppose, as we're starting at the beginning, try it with the aux. belt removed in case it's an ancillary? I'd be surprised, but eliminate it anyway. Worth checking for lost motion at TDC while You've got access to the crank pulley too? Kevin
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Re: Engine noise, terminal? Pt2
Reply #16 - 03. Apr 2010 at 19:59

Kevin Wood wrote on 03. Apr 2010 at 17:41:

That sounds like a heavier noise to me, but difficult to tell, TBH. Sad

Worth trying cutting each cylinder on Tech 2?

Is it still running on 6? Certainly sounds like it is. Undecided

If you pull the crank sensor and turn it over on the starter is there any knocking?

Kevin

I thought it sounded more serious that MV6, which is why I immediately went for cambelt - particularly as when it happened, I lost servo assistance for brakes, and then I couldn't restart. Attempts to restart, I reckoned it was spinning over a bit to easily.

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Re: Engine noise, terminal? Pt2
Reply #17 - 03. Apr 2010 at 20:02

Kevin Wood wrote on 03. Apr 2010 at 17:56:

... and, I suppose, as we're starting at the beginning, try it with the aux. belt removed in case it's an ancillary? I'd be surprised, but eliminate it anyway.

Worth checking for lost motion at TDC while You've got access to the crank pulley too?

Kevin

Put it all back together to take the video. Unsure of this car's future to be honest - whatever, I'll probably pop the camcovers off to get the (3l) cams out, as they have value Roll Eyes

, might 'play' and check followers whilst there, rip heads off etc, but doubt it will go back together Wink

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Grrrrrr Junior Member Offline Posts: 236 Buckinghamshire Gender: Drives: Blue shift (blue coming at you; green heading away) - 2.6 V6 petrol CDX automatic (2001) - as seen on TV!	Re: Engine noise, terminal? Pt2 Reply #18 - 03. Apr 2010 at 20:43 A bit beyond my ken but you said you reckoned it span too easily ... presumably due to a loss of compression? I.e. valve(s) not moving?
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Martin Imber Over Active Poster Offline LPG Omega V6 - Keyfobs Rebuilt Posts: 20110 Worcester Gender: Drives: 2001 Omega 2.6CD LPG & 3.0 cams	Re: Engine noise, terminal? Pt2 Reply #19 - 03. Apr 2010 at 20:47 I had a cam jump 180 degrees, that foxed me until I took the pulleys off
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Re: Engine noise, terminal? Pt2
Reply #20 - 03. Apr 2010 at 20:54

Did it have plenty of oil in when it failed? Just thinking, you implied a bit of playing happened shortly before? High revs / high G scenario might have caused it to take a gulp of air if oil level was low, thus emptying lifters. Undecided

Hard to see how it could lose vacuum / compression and then run happily albeit noisily with cam timing fine throughout. Undecided

Don't suppose one of the cam sprockets has turned on the cam - although they ~~are~~ should be keyed to each other?

Kevin

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Re: Engine noise, terminal? Pt2
Reply #21 - 03. Apr 2010 at 20:57

Kevin Wood wrote on 03. Apr 2010 at 20:54:

Did it have plenty of oil in when it failed? Just thinking, you implied a bit of playing happened shortly before? High revs / high G scenario might have caused it to take a gulp of air if oil level was low, thus emptying lifters. Undecided

Hard to see how it could lose vacuum / compression and then run happily albeit noisily with cam timing fine throughout. Undecided

Don't suppose one of the cam sprockets has turned on the cam - although they ~~are~~ should be keyed to each other?

Kevin

Oil still reading pretty much max, dark brown in colour, so due a change.

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Re: Engine noise, terminal? Pt2
Reply #22 - 03. Apr 2010 at 21:12

Kevin Wood wrote on 03. Apr 2010 at 20:54:

Did it have plenty of oil in when it failed? Just thinking, you implied a bit of playing happened shortly before? High revs / high G scenario might have caused it to take a gulp of air if oil level was low, thus emptying lifters. Undecided

Hard to see how it could lose vacuum / compression and then run happily albeit noisily with cam timing fine throughout. Undecided

Don't suppose one of the cam sprockets has turned on the cam - although they ~~are~~ should be keyed to each other?

Kevin

I had a key work out Sad

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The other tuned 2.6. DIY LPG, towbar, upgrade ICE & Wing Spoiler, Air shocks, Eibach Pro Springs, Poly WB bushes, WIM setup, HID conversion, 3.0 cams, ported ect.

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Entwood Omega King Offline Quietly Confident Posts: 13708 North Wiltshire Gender: Drives: 3.2 Elite (with LPG)	Re: Engine noise, terminal? Pt2 Reply #23 - 03. Apr 2010 at 21:18 If the lifters got "emptied" through "exuberant" driving .. wouldn't they just fill back up fairly quickly once restarted ???
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Kevin Wood

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Re: Engine noise, terminal? Pt2
Reply #24 - 03. Apr 2010 at 21:59

Entwood wrote on 03. Apr 2010 at 21:18:

If the lifters got "emptied" through "exuberant" driving .. wouldn't they just fill back up fairly quickly once restarted ???

Undecided

They can take a few minutes IME.

Noise sounds more serious although I'm aware that I've said that before recently and (hopefully) been proved to be overly pessimistic.

Kevin

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Andy B Over Active Poster Offline Posts: 21988 Bury Lancs Gender: Drives: 1999 3.0 Elite auto/TDM	Re: Engine noise, terminal? Pt2 Reply #25 - 03. Apr 2010 at 22:04 Sounds to be more serious that 'tappets' to me too. But not heavy enough though for big ends either.
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manny Junior Member Offline Posts: 240 bromorough.Wirral. Gender: Drives: 2001 MV6 manual	Re: Engine noise, terminal? Pt2 Reply #26 - 03. Apr 2010 at 22:16 Sounds like the little end nocking to me. I had a V6 ford years ago with damaged small end . That noise sound the same to me.
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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: Engine noise, terminal? Pt2 Reply #27 - 05. Apr 2010 at 19:24 Tech2 has pinpointed the issue to cylinder 6 which appaers not to be firing. Cam timing spot on. HT lead for No6 is just under 4k ohms, as are all the others, except No3 which seems odd. Skinned my hands removing the DIS, that measures OK as well. Plugs replaced as a matter of course. Plug 6 was darker, but complete.
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Lazydocker Omega King Offline Victim of Pinky's Power Trip! Posts: 11336 Woodbridge, Suffolk Gender: Drives: 2003 3.2 Elite Estate LPG Converted, inspected and Certified	Re: Engine noise, terminal? Pt2 Reply #28 - 05. Apr 2010 at 19:38 Hmm... So wiring to dispack? Certainly smells like there's fuel getting there Or inlet lifters... Although seems far too coincidental
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Marks DTM Calib Administrator Offline Ex Member Posts: 25671 Northern Hemisphere Gender: Drives: Astra J, Mum Bus, Dexta Tractor, 108 DMU wip	Re: Engine noise, terminal? Pt2 Reply #29 - 05. Apr 2010 at 19:43 When you collect the silver nugget, you can borrow my spark tester...and compression tester
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