Disco Problems, Maybe MAF?

hi Fade,
I have almost identical probs as you. Rough idle, missing, long crank when starting, really fuelly.
Spark plug no. 8 very black sooty carbon, others light tan (as should be).

After all that - How did you end up working out that it was the Fuel Pump ???:confused:

When the maf died on BUB91 it just wouldnt run below 3K,, above that-- hang on!

( and you thought normal V8 fuel gauges moved quick--:eek2:)

My mother got sick of seeing it in the carport so she organised it to be towed to the nearest rover centre (despite me not wanting to give up on myself :p), so they diagnosed it for me and tuned it which im very glad for. But if you can get your hands on a fuel pressure gauge it would be handy for testing it. I had one lined up from a friend, but got beaten.

I found this thread while looking for some answers on very bad fuel economy on my friends 92 disco.
it drives well and pulls the trailer ok but uses a lot of fuel.
a few weeks ago he had a few problems and changed the fuel pump and spark plugs and the car was running a lot better. he used to get about 500-550 kms from a tank of fuel but now barely gets 350=400 kms per tank
it would seem that the engine needs a tune up,
would adjusting the maf be helpful?
or maybe something else as a tune up?

I have a Tdi and not much experience on the v8's

Thanks

Anthony