Originally Posted by
beaver rs 88
Most newer diesel lift pumps operate at around 0.5bar as the high pressure pump creates a vaccuum to pull diesel hence why you need to bleed most diesel fuel systems when the filters been changed. If you try using a petrol fuel pump on a diesel I dare say you could potencially damage the hp pump as most petrol fuel pumps are a lot higher pressures. By all means try it but I no I wouldn't risk it on my car mate
You do realise that the purpose of a lift pump is to pump fuel from the tank to the main engine pump. And any car equipped with such a pump does not need bled.
Only vehicles with a high pressure pump that cannot suck and that have no lift pump at the tank require manual bleeding.
And any electric pump will only create pressure if there is a restriction in front of it and it is capable of creating pressure.