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1

Omega General Help / Re: Engine running OK but feels 'flat', I think the vacuum powered flaps not working

« on: 07 September 2018, 21:14:51 »

  It is all working...! 

I disconnected & blew through all the vacuum pipes & I can hear & feel the engine change just over 4k revs... Yay!

Thanks for the help guys, & now that's sorted I've spent a few quids on new brake disks, pads, caliper slides & a front bearing to fettle the front end of the car.

Another thing I think will need sorting is the headlight aim - seems too high & some other drivers are flashing me on dipped beam

Thanks again

/malc.

2

Omega General Help / Re: Engine running OK but feels 'flat', I think the vacuum powered flaps not working

« on: 03 September 2018, 07:47:08 »

Yes I’ve seen the front one opening

Rats.... Off to work now, will see how things are later on.

/m.

3

Omega General Help / Re: Engine running OK but feels 'flat', I think the vacuum valves not working

« on: 02 September 2018, 22:03:12 »

Terry - hope you're ok. Sorry for the delay, been on hols over the last week.

Today I looked at the vacuum. Fitted the new vacuum reservoir box - tested it first, all OK. If you block the small bore connection and suck on the large bore connection and let go, then unblock the smaller connection you hear the fisss from the stored vacuum from the small port.

After checking the rubber pipe joints I also saw a crack on the 90 degree joint by the front intake pipe, so replaced it with a spare...

Went for a short test drive - all seems OK and go SWMBO in the driving seat and watched the values as she rev'ed the engine. Hmmm. The rear resonance valve opened fine but I didn't see the front one move. Boo. Took the vacuum valve off and tested it electrically - it works. Ran out of time this evening - boy it is getting dark earlier now!! :/

Off to work tomorrow, with see how she's driving, but has someone else seem the front intake valve opening when you are under the bonnet? Is it just me or other people too?

Thanks Terry & guys.

/malc.

4

Omega General Help / Re: Engine running OK but feels 'flat', I think the vacuum powered flaps not working

« on: 24 August 2018, 07:48:23 »

Hi Terry,

I had a new(er) vacuum reservoir arrive yesterday - will try fitting it in the next few days. Time will tell!

/malc.

5

Omega Gallery / Re: Back to omega...again :)

« on: 18 August 2018, 20:42:55 »

Fresh oil plus all filters, wheel spacers 30mm each, mv6 seats fitted but need good clean and driver one need repair, new number plates, rear badge, polished headlights...happy day

Those headlights came up well - what did you use? I'm asking as mine need a little love too!

Thanks

/malc.

6

Omega General Help / Re: Engine running OK but feels 'flat', I think the vacuum powered flaps not working

« on: 18 August 2018, 19:26:28 »

Evening all & Terry!

Right - I've just spent an hour of so looking that the problem.

First of all, I swapped the in and out of the vacuum box around - as you said Terry, little change! Put it back to normal. 

Next I got SWMBO to sit in the driving seat and do the pedals. We tried all the rev ranges, nothing at all happened with any of the valves, nothing!

So, removed the pipe section and sucked/blew into the vacuum box... Then I sucked on the 'in' port no vacuum was presented at the 'out' port. It's dead.   

Trying something different, I put everything back to together and totally bypassed the vacuum box... Tick over was much better!

Got SWMBO to dance on the pedals again, and this time the resonance valve at the back worked as expected, but the front intake valve didn't move at all.

I've ordered a vacuum box, should I expect the intake valve to work better with a working box in line? If not, anyone know the part number of the intake valve vacuum control - or anyone have one for sale?

Thanks guys.

7

Omega General Help / Re: Engine running OK but feels 'flat', I think the vacuum powered flaps not working

« on: 18 August 2018, 14:04:18 »

Hi Terry - Have just unplugged-re-plugged all the small vacuum pipes, re-routed them, running better but just going for a test time... will be back soon!

Afternoon all - just from visiting my dear old mother (the 87 years old girl!) and the Omega *is* running smoother than before - but I still think that the multiram valves operation gave a more noticeable change to the engine note when they operated... Will investigate again later.

/m.

8

Omega General Help / Re: Engine running OK but feels 'flat', I think the vacuum powered flaps not working

« on: 18 August 2018, 11:46:49 »

Hi Terry - Have just unplugged-re-plugged all the small vacuum pipes, re-routed them, running better but just going for a test time... will be back soon!

9

Omega General Help / Re: Engine running OK but feels 'flat', I think the vacuum powered flaps not working

« on: 17 August 2018, 21:44:58 »

Here's the guide
http://www.omegaowners.com/forum/index.php?topic=90513.0

Thanks Terry - will let you know how I get on!

/malc.

10

Omega General Help / Re: Engine running OK but feels 'flat', I think the vacuum powered flaps not working

« on: 17 August 2018, 21:36:51 »

  Hello Terry - long time no speak but great to 'see' you on line again! 

I'll have another look at the problem tomorrow, but I'd spent an hour or so reading stuff on here - I think I've learned a lot so far.

Quick question - am I saying the right thing in this image??  



Thanks.

11

Omega General Help / Engine running OK but feels 'flat', I think the vacuum powered flaps not working

« on: 17 August 2018, 20:45:00 »

Hello again!

Not been in here for ages - but I still love and cherish my last Omega (a 2.6 auto, 2003).

Anyway, she's been good for years, but now she has a problem. From what I can work out the problem is that the vacuum powered 'flaps' in the induction tract are not working. I've pulled and examined the various vacuum pipes (large and small) from the manifold to the brake servo etc. and they look good, the rubber joiners are fine etc.

I guess someone has come across this before, but if the vacuum isn't reaching the valves, what is the best test?

• Should I remove the vacuum box and suck/blow (fnarr!) down the pipes?
• What does this feel like?
• Do these items often fail?
• Is there an clearly marked 'in' and 'out' for the testing?

If any of you wonderful people could point me in the right direction, I'll be very grateful... 

/malc.

12

Omega General Help / Re: What is the shelf life of an OEM Vauxhall Omega cambelt/water pump?

« on: 07 March 2016, 23:00:38 »

Evening all!

Not been back on here for a couple of years,  .....

I remember you from the Yahoo site ..... pre OOF Dr Omega was here at one time too 

I remember him too...  A font of knowledge, always started a post with "Hello Please..."

13

Omega General Help / Re: What is the shelf life of an OEM Vauxhall Omega cambelt/water pump?

« on: 07 March 2016, 20:12:47 »

Hi Malc,
           great to hear from you again. congratulations on your MOT pass. Sorry you are down to one Omega. I still love them and the whole family use them.
[snip]
Thanks for inviting me to your daughter's 21st party, albeit by mistake. How is she doing now?

Hi Terry!

wow, it's been a few years but we're all fine here thanks! I'd forgotten about the party invite, mists of time and all that!

Good to hear you are still an active Omega man - and thanks for your input.

/malc.

14

Omega General Help / Re: What is the shelf life of an OEM Vauxhall Omega cambelt/water pump?

« on: 07 March 2016, 19:23:10 »

Yep, no point changing the belt without the tensioners. I'd also say there's no point in changing the water pump unless it has actually failed on a V6.

As to how 5 years on the shelf will have affected a belt and its' tensioners.. Do you feel lucky?

There are tensioners in the kit - this is a similar kit from a belt change I did way back in 2004... http://malcp.com/ocb/DSC04508.JPG  Metal tensioner springs won't degrade on a shelf, surely?

Whenever I changed an Omega cambelt I swapped the waterpump - seemed rude not to given the tiny amount of extra work involved.

Lastly, how much is a Vx belt kit these days, or are any third party belts acceptable quality these days?

/m.

15

Omega General Help / What is the shelf life of an OEM Vauxhall Omega cambelt/water pump?

« on: 07 March 2016, 17:57:16 »

Evening all!

Not been back on here for a couple of years, mainly because I'm down from four Omegas to the last one and that's been behaving perfectly...!

Anyway, the blue MV6 estate passed her MOT this morning with one advisory, front disks scored. To celebrate this, and the fact I still love her, I'm going to do the brakes and also give her a full service.

In the garage I have a 3.0l cambelt and a water pump - both a genuine Vx and both bought for a previous Omega. The only issue is they have been on the shelf there for at least 5 years, perhaps more.

So, the questions are;

• Will a 3.0l belt fit a 2.6l?
• Will the belt be a false economy?
• I'm guessing the water pump will be ok?
• Any top tip for plugs? Vx still the best

Thanks guys for any input.

/malc.