New Disco owner, lousy economy

Rovernaut · 23rd December 2004, 07:55 AM

Ralph, I would also check the possibility that the injectors could be leaking fuel? Check under the bonnet whilst it's running and see or feel for any wet petrol around the injectors. If so it's any easy job to replace the "o' rings just the "o"' rings are pricey though. Also Check for fuel leaks under the car like the fuel filter area. You never know?

ET · 23rd December 2004, 08:36 AM

Hi Guys, my first input. Have also recently brought a 96 v8 Disco. Has got everything and I love it have had Tojos and Nissans this is a better all round vehicle and great to travel in. But fuel economy is pitiful. I get only about 400k's around town out of an 89 litre tank. Highway about 500k's.
Appreciate any hints that could improve things. Has anyone tried one or two HiClones? Can anyone suggest a good LR service centre on Qld Sunshine Coast.
Thanks. E.T.

**incisor** · 23rd December 2004, 08:51 AM

Hi and welcome to the place!

500k is about as good as it gets i am afraid. i once got 540k out my 96 v8i but it took some doing... but you can tow a tailer and it wont alter all that much if it is any consolation

british offroad at forest glen / chevallum, beside the highway, are okay service and parts wise.

dave or paxton are the most friendly there in my experience.

**shaunp** · 23rd December 2004, 02:41 PM

If everything is correct and the timing is advance to 6-10 deg BdTC you will get over 500 easy on the highway. The low fuel light is supposed to come on at 9 L left, mine comes on at about 14L so thats about 18L /100 around town and about 15/100 on the road give or take. That's not to bad really considering my mates brand new 100 series doesn't do any better, just seems like it does because it holds more fuel, another bloke I know has 4.8 patrol and it used 30L/100 at Double island Pt last trip. Dad's TDI 5 speed seems to get between 8-11/100 highway /city. He reckons it seldom averages worse than 10/100 on a tank.

Forget about Hyclones and other snake oil, just make sure the thing is setup right and don't flog it.

**adm333** · 6th January 2005, 11:02 PM

I had awful fuel consumption on my 94 RR 3.9 V8 when I got it.

I replaced a buggered Vac advance unit and got instant improvement.

About 15 - 16 L / 100 on highway and 20 - 22 in the city

If doing so, ring Advance Diaphragm Options 07 5428 0808

It only cost about $65 for an exchange unit against much bigger dollors quoted elsewhere.

Shaunp - would the timing advance be the same for the 94 V8 (same motor I think) sounds interesting, might check it out.

**shaunp** · 7th January 2005, 01:15 PM

Yep the factory setting is 2+-1 but they run much better with some more I find 6-7 btdc works well and is safe even on crappy fuel. They will take up to 10 but some doggy fuel makes some ping under load sometimes.

**Bytemrk** · 7th January 2005, 02:21 PM

Hi guys,

Does anyone know if retarding the timing a little has the same improvement on fuel with the Disco 2??

It sounds logical that it would but will the ECU just adjust for it and effectively make no real change? :?

**p38arover** · 7th January 2005, 03:23 PM

Originally posted by Ralph1Malph
Shock horror when one week after purchase I have returned the enviable figures of 26-29 city, as yet no hwy driving. <snip>

Quite frankly, I'd consider those figures as unenviable rather than enviable.

Ron

**shaunp** · 7th January 2005, 04:31 PM

Retarding the ignition will increase consumption. Disco series 1 cars do not have ecu control of the timing. They use an old fashion dissy with vac and mech advance. The factory setting of 2 deg btdc is really just so the engine met the emission ADR. Disco 2s Use a different injection system and timing is ecu controled,timing maps would need to be altered.

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