Runing out of Petrol!

[Jonny Boaterboy]

It tells me in the hand book under no circumstances let my 1994 V8 3,9 engine run out of fuel...... Why? If I run out of fuel can I not just put in my spear 5 litres of fuel and turn the key and wait untill some fuel reaches the engine and fires and drive off?

Thanks Jonny (with a full tank!)

[Xtremeteam]

it has something to do with the cats i think,run the V890 dry about 3 times in the last fortnight & never had any probs,

[James.Harwood]

This is a mistake in the hand book, it should read 'Always plan your route by known petrol stations at regular intervals'

[H]

mines run dry of both fuels before now, because of the angle I was parked it took the whole 5 litres in my spare can just to get enough pressure to get some up to the engine. but shes shown no side effects but then again I dont have a cat. 92 3.9 efi

[landyman Ash]

it has something to do with the cats i think,run the V890 dry about 3 times in the last fortnight & never had any probs,

Typical scotsman, cant put a full tank in      

Only joking bud, I ran my 89 (admit, not the same) dry LOADS of times, never had a prob.  Always started eventunally!

[Range Rover Blues]

It can damage the fuel pump.  TBH though a lot of what's in the manual is just the manufacturer covering their a**e.

[Xtremeteam]

it has something to do with the cats i think,run the V890 dry about 3 times in the last fortnight & never had any probs,

Typical scotsman, cant put a full tank in      

Only joking bud, I ran my 89 (admit, not the same) dry LOADS of times, never had a prob.  Always started eventunally!

thing is that was from a full tank,120 miles up the road n it would pull up wi the pump making a racket,hmmm i kno that sound its run out

[Jonny Boaterboy]

Righty that seems to have clear out my worrys!, never ran out of fuel yet but you know how thirsty the V8 is not sure how far to pust it!

Thanks everyone

[Garth]

The fuel pump runs continuously when ignition is on and as it is a submerged type is cooled by the petrol in the tank.  So if you have ignition on and no fuel in tank the pump overheats.  Thats why if you have LPG you allways need petrol in the tank (or dissconnect the fuel pump.

[Jonny Boaterboy]

Thanks garth will bear that in mind if I ever do run out

Jonny

[Sooty]

Not sure if this has anything to do with it but on my discovery 3.5 V8 1990 the fuel pump is supplied through a relay that is grounded by the oil pressure sensor, therefore if the oil pressure drops then the engine stops.
This maybe in case the oil light is duff or someone is daft enough to continue to drive when the light comes on.

[Garth]

Addition to previous info the petrol also acts as a lubricant so if the pump is run dry it can seize up.
Either way its not good