Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Taxi_Driver on 05 November 2006, 19:22:51

Title: I'm now expecting Tunnies Fuel Consumption!
Post by: Taxi_Driver on 05 November 2006, 19:22:51
Checked my tyre pressures today.....

One ok at 30psi

One was at 27psi

Other two were 25 psi

All nicely blown upto 30psi now.....40mpg here i come  ;D
Title: Re: I'm now expecting Tunnies Fuel Consumption!
Post by: Del Boy on 05 November 2006, 19:26:53
40 :o i get 14-17 but there again my wife says i have lead feat
Title: Re: I'm now expecting Tunnies Fuel Consumption!
Post by: tunnie on 05 November 2006, 19:33:46
Quote
Checked my tyre pressures today.....

One ok at 30psi

One was at 27psi

Other two were 25 psi

All nicely blown upto 30psi now.....40mpg here i come  ;D

You should get that! ;)

I'll have to make a video next time of me re-setting the fuel gauge, then cruising @ 75 for 50 miles and show the result!

I usually put mine at 31 though, the book says 30.5 so i round it up.

Not using cruise control, and not hoofing it up hills, i easily get 40 on a motorway run @ 75mph...
Title: Re: I'm now expecting Tunnies Fuel Consumption!
Post by: theolodian on 05 November 2006, 19:44:58
Quote
Quote
Checked my tyre pressures today.....

One ok at 30psi

One was at 27psi

Other two were 25 psi

All nicely blown upto 30psi now.....40mpg here i come  ;D

You should get that! ;)

I'll have to make a video next time of me re-setting the fuel gauge, then cruising @ 75 for 50 miles and show the result!

I usually put mine at 31 though, the book says 30.5 so i round it up.

Not using cruise control, and not hoofing it up hills, i easily get 40 on a motorway run @ 75mph...
My 3.0 Auto Elite with 225 tires will get 32+ on cruise at 80, as much as 35 doing what you describe.  The problem is that if I don't do any motorway I get 24 between fillups  :(  One of the main reasons is that it runs insanely rich during warmup.   >:(  On short trips it is in warmup half the time and just gulps fuel.
Title: Re: I'm now expecting Tunnies Fuel Consumption!
Post by: Chopsdad on 05 November 2006, 19:56:37
Just been out today with a fresh tank of expensive BP Ultimate for a treat - 27 mpg at 75 ! I normally get 34 with this stuff in but need to clean breathers & fix emissions fault first I suppose.

I did get 40 mpg once - took a pic on my phone for prosperity - never repeated since.
Title: Re: I'm now expecting Tunnies Fuel Consumption!
Post by: Taxi_Driver on 05 November 2006, 20:00:40
Quote
Quote
Checked my tyre pressures today.....

One ok at 30psi

One was at 27psi

Other two were 25 psi

All nicely blown upto 30psi now.....40mpg here i come  ;D

You should get that! ;)

I'll have to make a video next time of me re-setting the fuel gauge, then cruising @ 75 for 50 miles and show the result!

I usually put mine at 31 though, the book says 30.5 so i round it up.

Not using cruise control, and not hoofing it up hills, i easily get 40 on a motorway run @ 75mph...

Will have to try harder  ;D Usually @ 80mph on motorways it does 24/25 mpg on gas...ok add 10/15/20% for being on gas that only makes 30mpg max  :'(
But then gas is only at the mo 38ppl so who cares  ;D
Title: Re: I'm now expecting Tunnies Fuel Consumption!
Post by: tunnie on 06 November 2006, 11:14:14
Quote
Quote
Quote
Checked my tyre pressures today.....

One ok at 30psi

One was at 27psi

Other two were 25 psi

All nicely blown upto 30psi now.....40mpg here i come  ;D

You should get that! ;)

I'll have to make a video next time of me re-setting the fuel gauge, then cruising @ 75 for 50 miles and show the result!

I usually put mine at 31 though, the book says 30.5 so i round it up.

Not using cruise control, and not hoofing it up hills, i easily get 40 on a motorway run @ 75mph...

Will have to try harder  ;D Usually @ 80mph on motorways it does 24/25 mpg on gas...ok add 10/15/20% for being on gas that only makes 30mpg max  :'(
But then gas is only at the mo 38ppl so who cares  ;D

Also petrol is about 7ppl cheaper than diesel at the moment! - Its taken the benefit right out of having an oil burner
Title: Re: I'm now expecting Tunnies Fuel Consumption!
Post by: Taxi_Driver on 06 November 2006, 19:52:52
Quote
Just been out today with a fresh tank of expensive BP Ultimate for a treat - 27 mpg at 75 ! I normally get 34 with this stuff in but need to clean breathers & fix emissions fault first I suppose.

I did get 40 mpg once - took a pic on my phone for prosperity - never repeated since.

Will have to follow AA's howto on doing the breathers.....and see if that makes a difference....havent done it yet....coz since he posted the howto is been blinking cold out  :(

I fixed one of my veccies the other morning at 8am.....0c ....boy was i glad the engine was hot to keep my fingers from freezing  ;D
Title: Re: I'm now expecting Tunnies Fuel Consumption!
Post by: Matchless on 07 November 2006, 09:35:52
Quote
My 3.0 Auto Elite with 225 tires will get 32+ on cruise at 80, as much as 35 doing what you describe.  The problem is that if I don't do any motorway I get 24 between fillups  :(  One of the main reasons is that it runs insanely rich during warmup.   >:(  On short trips it is in warmup half the time and just gulps fuel.[/quote]

Whats yours like on start-up....does it fire first turn or does it need a couple of goes? Is it better if you open the throttle slightly?

Reason I ask is that I think I have an incontinent injector which leaks fuel into the intake after switch-off, its then too rich on start-up next time and fuel consumption is far too high on short runs but OK on longer runs. I have another injector assy to fit when I get time so will see if my theory is correct.
Title: Re: I'm now expecting Tunnies Fuel Consumption!
Post by: theolodian on 07 November 2006, 09:44:20
Quote
Quote

My 3.0 Auto Elite with 225 tires will get 32+ on cruise at 80, as much as 35 doing what you describe.  The problem is that if I don't do any motorway I get 24 between fillups  :(  One of the main reasons is that it runs insanely rich during warmup.   >:(  On short trips it is in warmup half the time and just gulps fuel.

Whats yours like on start-up....does it fire first turn or does it need a couple of goes? Is it better if you open the throttle slightly?

Reason I ask is that I think I have an incontinent injector which leaks fuel into the intake after switch-off, its then too rich on start-up next time and fuel consumption is far too high on short runs but OK on longer runs. I have another injector assy to fit when I get time so will see if my theory is correct.
Fires right up.  There is no clear sign of anything mecahnically wrong.  Even after 300 miles, no matter how gently I drive my avg mpg drops steadily for the first few minutes of driving.  (It would not be shown in the MID if leaking injector.)  It continues a bit past when the engine temp comes up, assuming that is not a delayed reaction then the auto tranny and tires may be part of the  problem when cold.  I think it is fundamentally a tuning issue of too much cold start enrichment, with a possible cold tranny issue on top.