Vehicle & Technical > Discovery

TD5 fuel consumption

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merlin617:
Hi all,

Just popped over from the defender section to ask you chaps a question.

My son has a TD5 disco which appears to be only returning 16 MPG. I wondered what it should be doing and what might be at fault if it should be doing considerably more.

It has had a new pump and a new fuel pressure regulator fitted.

Any advice would be gratefully received.

Many Thanks.

TechnoTurkey:
Maybe his right foot needs lightening?

Hightower:
Could be a number of things.
1) Fuel leak
2) Bunged up air pressure/temp sensor on the inlet manifold
3) MAF not functioning
4) any number of other electrickery bits that can go wrong

What has he checked?

freelanderpx54:
When my MPG goes down then it is usually down to the tyre pressures being too low.


Also check that the brakes aren't binding

merlin617:
Hi again

I'm not sure what he has checked but I will ask him when i see him.

No sign of a brake binding and as far as I know he regularly checks his tyre pressures.

It runs nicely enough, no smoke or anything untoward

all this electrikery fitted to these motors is a bit beyond me,(the work of Satan :evil:) Ive just replaced the N/A diesel in my 90 with  a 200 TDI and now consider myself on the cutting edge of technology :oops:

Can anyone tell me what approximately what one can expect to get out of a TD5. Its an auto by the way.

Thanks again

Dave

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