Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: PLANETNZ on 25 January 2015, 07:56:24

Title: Thinking outside the square,
Post by: PLANETNZ on 25 January 2015, 07:56:24
Hi Guys, im posting this not to be a smart ass but more to highlight and solve an issue I have had with my car for the last few months.
Today I actually (think) I sorted the problem out (Please God!!)

The reason for this post is in the subject

Where I am heading is: I consider myself a reasonable sort of "mechanic" I can fix most things!

 However my Opel (Omega, that I should have sold at least 6 years ago) has slowley lost power and fuel consuption rising. for absolutly no reason and because i drive it regually I never really realised the issues until i fuel it.

I have regually hooked it up to my Isuzu Tech2.. and nothing has come out of it..Everything works as it should

I have replaced in the last 5000KM all plugs, gaskets, leads,, DIS, all filters, air leaks  etc etc. everthing has been done and yet its still been loosing power!??

OK, heres the challenge! all jokes aside what would you think the issue is?

Again, i only figured out this today, something so simple the solution may or will helpother members!

To help i gave 5the old girl a groom and washed down the engine bay (no its not water in the spark plugs)

Boycey
Title: Re: Thinking outside the square,
Post by: 05omegav6 on 25 January 2015, 08:27:58
Been filling up with parafin ::)
Title: Re: Thinking outside the square,
Post by: powerslinky on 25 January 2015, 09:55:49
No idea really :-[  . . so what about this one ? . . .You have just found an empty coke can under the go pedal  ;D ;D ;D ;D ;D
Title: Re: Thinking outside the square,
Post by: the alarming man on 25 January 2015, 10:35:47
binding brakes??
Title: Re: Thinking outside the square,
Post by: flyer 0712 on 25 January 2015, 10:58:21
One spark plug fallen out and a hole in petrol tank  :D :D :D :D :D
Title: Re: Thinking outside the square,
Post by: terry paget on 25 January 2015, 12:05:46
No other symptons? Just down on power and up on fuel consumption, eh?  Does it start well and run cleanly? Are there no warning lights on? Do all the bulbs come on when ignition is switched on? Is there any smell of petrol?

Is it auto or manual?

I am perplexed. If it were binding brakes they would smoke. Is the exhaust blocked?
Title: Re: Thinking outside the square,
Post by: Varche on 25 January 2015, 12:15:20
Fuel filter blocked ?

Are there any stored codes?

I know you have said air leaks all checked. I had one that was actually in one of the 90 degree elbows on the approx 1.8th black vacuum lines.
Title: Re: Thinking outside the square,
Post by: ted_one on 25 January 2015, 12:16:18
Don't do mysteries,just give it to someone like Taxi Al who has supernatural problem solving capabilities,helps with my anger management,no end ::) :y
Title: Re: Thinking outside the square,
Post by: Elmstoneboy on 25 January 2015, 13:36:35
Quote from: Varche on 25 January 2015, 12:15:20
Fuel filter blocked ?

Are there any stored codes?

I know you have said air leaks all checked. I had one that was actually in one of the 90 degree elbows on the approx 1.8th black vacuum lines.


I didn't know I was down on power until I notice that the same elbow had split and when checking the rest of the vac pipes, found the the bagpipe Vacuum reservoir one way valve
had packed up and wasn't storing vacuum. Fitted a replacement, repaired the elbow. Now I know I was down on power. What a difference, more power and smoother with it.
There are a lot of little gadgets and sensors on the Omega, and it certainly pays to make sure they are all working.
Title: Re: Thinking outside the square,
Post by: 05omegav6 on 25 January 2015, 16:13:59
Actually, rereading the OP, someone left a sponge in the air intake when they shut the bonnet... ::)

What did I win?
Title: Re: Thinking outside the square,
Post by: TheBoy on 25 January 2015, 18:43:55
Was it strugging to trim. Were the trim values for both banks 128?
Title: Re: Thinking outside the square,
Post by: PLANETNZ on 25 January 2015, 20:19:08
Well after months of trying to figure it out replacing damn near everything
..  loose spark plug! #4  %^&*(
Title: Re: Thinking outside the square,
Post by: Diamond Black Geezer on 26 January 2015, 09:28:38
As you say, that's so obscure that who would ever think about it?? Sounds not dissimilar to my old girl who, after much help from the terrific peoples of this forum (as well as the smart alecs  :y ) found the throttle body screw was maladjusted - how?!!? How on earth did that get moved?? As you say, it highlights that sometimes it can be something so utterly bizarre and left-field, that no-one would ever guess.

Tonight I'm going to check all my plugs are in tight, now  :y
Title: Re: Thinking outside the square,
Post by: PLANETNZ on 26 January 2015, 23:12:49
There was swearing! 
Couldnt belive it and there was absolutly no symptoms, no noises nothing. It must have been just loose enough to affect compresion but not enough to actually show anything really out of order.
The good thing is that I can now do a complete spark plug change in these things in about five minutes, when i first pulled them out it took over an hour!
Title: Re: Thinking outside the square,
Post by: Diamond Black Geezer on 27 January 2015, 10:22:31
Ahh worry not, I've been working on Omegas since I was a wee nipper, and at the weekend it took me two hours to remove two caliper bolts and completely ruin the allen screw for the brake disc. Not a good day, and sometimes things just won't come undone/go the way they're supposed to  :'(

I'm just thinking of the Michael Caine scene in Batman - the "Why do we fall, Master Bruce?..."
Title: Re: Thinking outside the square,
Post by: 05omegav6 on 27 January 2015, 10:30:10
Quote from: Diamond Black Geezer on 27 January 2015, 10:22:31
Ahh worry not, I've been working on Omegas since I was a wee nipper, and at the weekend it took me two hours to remove two caliper bolts and completely ruin the allen screw for the brake disc. Not a good day, and sometimes things just won't come undone/go the way they're supposed to  :'(

I'm just thinking of the Michael Caine scene in Batman - the "Why do we fall, Master Bruce?..."
Having misread your post, was going to suggest...

One of theses...

(http://i1.adis.ws/i/washford/400-694398?$pd_main$)

A 13/15mm deep socket and a 2' extension, and bish bash bosh ::)

Having reread your post ::) :-[

What you actually need is one of theses...

http://www.powertoolsuk.co.uk/dewalt-dch363n-sds-plus-hammer-36v-drill-body-only.html?gclid=CPLJ18z7s8MCFQTjcgodv2AANw

With a decent12mm drill bit... :y
Title: Re: Thinking outside the square,
Post by: Marks DTM Calib on 27 January 2015, 10:37:17
The trouble with the allen screw in the brake disc is they get over tightened, they only need the lightest of nips. And I seem to recall suggesting to check the throttle screw.......

On the loose plug.....have they really been in there 6 years lol.
Title: Re: Thinking outside the square,
Post by: Diamond Black Geezer on 27 January 2015, 11:27:00
Quote from: Marks DTM Calib on 27 January 2015, 10:37:17
The trouble with the allen screw in the brake disc is they get over tightened, they only need the lightest of nips. And I seem to recall suggesting to check the throttle screw.......

On the loose plug.....have they really been in there 6 years lol.

Yes indeed, and all due credit to Mr DTM. Never done me wrong yet  :)
Title: Re: Thinking outside the square,
Post by: Diamond Black Geezer on 27 January 2015, 11:27:30
And Taxi Al, yep, it's getting attacked with a big drill hopefully tonight!!  :D
Title: Re: Thinking outside the square,
Post by: PLANETNZ on 28 January 2015, 01:39:02
Quote from: Marks DTM Calib on 27 January 2015, 10:37:17
The trouble with the allen screw in the brake disc is they get over tightened, they only need the lightest of nips. And I seem to recall suggesting to check the throttle screw.......

On the loose plug.....have they really been in there 6 years lol.
lol no! i changed everything last year, plugs leads pak etc and have had them out a few more times after cover gasket change..Bloody cars!