Fuel pumps - how do they work?

Discussion in 'Mech Tech' started by dazzaxjr, Aug 27, 2011.

  1. So whilst I think about pushing my van into the sea, I thought id start a thread to check the basics.

    So I guess in most vehicles/vans from the fuel tank you have the following items connected:

    Tank > filter > pump (electric or mechanical) > filter > carbs

    But are there any other obvious things that you need to check? E.g. Do any items have to be higher than others?

    In my setup I made sure that tank and filter are higher than the pump so that gravity helps fill the pump. Given this the next filter and carbs are therefore higher than the pump.

    I know that pumps are low pressure 3-4psi, so is that all ok?

    Cheers. Darrell.
     
  2. Poptop2

    Poptop2 Administrator

    Do you have a type 1 or 4 engine ?.
     
  3. Type 4. :)
     
  4. Poptop2

    Poptop2 Administrator

    Not my bag , soz -- pm joker dude .
     
  5. gravity will help with the pump but its not essential, i've just imported a van from the USA and it has an electric pump fitted half way up the firewall and it works just fine. Its a pump so it pumps, it will suck the bark off trees.


    I'm not sure which style pump you've plumped for as you had 2 on the go. If its the square box 'facet' style pump it should work just fine as you've got it set-up. I would question whether you've got a tank gunked up with crap. I'd also check the stock mechanical pump. If you've kept some hoses its quite simple to run a length of hose into a jug of water and have someone crank the engine over to see if it still works. The frog mechanics you saw would have been thinking about their next meal break...


    You seem to have 3 different threads running mate all on the same subject - you're best sticking to one so its easier to keep track of...
    ;D
     
  6. Sorry, started this thread not to ask for help with my fuel pump, but to understand how they should be installed in an ideal world.

    Also are there any gotchas to look out for. But seems as simple as I thought.

    Cheers.
     

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