squizxr

What sort of miles should i get to a tank of fuel?? I brimmed the tank, loike all the way t the top of the filler neck, re-set the trip meter and drove til it died, i done 295 miles!!! Surely it should do more than that?? I drove it like miss daisy as well, no high revving etc!!

paceo

iTrader: (5)

there not that good on fuel squiz, but only have small tanks as well, think only 38 litres?

RstAaron.

mk4? If so thats about right, 47 litre tank so just of 30mpg.

squizxr

The tanks bigger than that Rob, gauge says 47 litres, altyho i think the most i squezzed in was 42!! I swear when i got it i got 340 odd miles to a full tank but i could be wrong!!

Yea its a mk4 mate, i jus thought it would do more than that

RstAaron.

you haven't got a hole in the tank have you? Lol

tabetha

30 doesn't sound that good if driving like miss daisy, I'd want piccies if you looked like miss daisy though!!
tabetha

RstAaron.

considering they are 25 y/o cars and possibly with mechanical fuel injection? Mine done about the same on a run...

Blunt.RS

iTrader: (7)

325-340 miles average mostly motorway

Chris69

you should get more than that mate, should be mid 30's at least if your taking it easy- the mfi is actually quite a fuel efficient system.

tabetha

Although carb not fi my dad I'm sure used to get around 35-38, only swap was janspeed manifold and system on his 1980 xr3.
tabetha

squizxr

Yea i should have said its a 88spec so running mfi!!

The thing is shit slow so no pint booting it, il jus poodle around in it!! The fuel gauge is shit, when it run out it said i still a 8th of a tank

The metering unit looks like it might be leaking, but it isnt that bad!!

Cheer the replies fellas

RstAaron.

yeah don't trust ford fuel gauges! Nearly got in some bother with the police cos of them... Lol

chaffe

maybe check the ignition timing? if its needing advanced you can get more power and more mpg, also if the cams worn and tired it will effect economy and power, just a thought

stevo123

As above, check timing, also may need to get fuel pressure (and control pressures) checked by a K-Jet experienced machanic.

A 3i running roughly and out of tune will get up to 30mpg, I have had quite a few 3i's (Mk3 with shorter final drive of course) and i would get 35 on averge driving steady.

One thing that makes a big differnce is tyre pressures, I always set mine 2-3psi or so above standard specs for summer use and standard for wet winter weather.

Let us know how you go mate.

Ps, chuck some redex through because your injectors might have a poor spray pattern and this will not help either.

johnnysash

If I use mine in town on commute from dagenham to paddington I get 24 to the gallon. If I take it steady on a long run I can get 340 from a tank if that helps. And my ignition was advanced to about 16 degrees which is wrong. Have adjusted now back to 10-12.

Fordmad!

So how many miles would you roughly get out of a tenner then, mixed driving?

johnnysash

At todays prices I would be well chuffed with 50 miles!

Fordmad!

Im getting 50 miles probably 55 if i pushed it which don't think its bad!

RenegadeRoger

ive been told that 80s f.i is rubbish so going to move to bike carbs, hopefully should see a performance increase and throttle response increase not too sure on the fuel side of it. However, not going to be my daily runner so wont be an issue