Heeeeelpppppp!

Discussion in 'Mech Tech' started by 14platoon, Apr 25, 2017.

  1. beetle type 1 engine manual fuel pump 1600cc single carb
    Took the carb off for a clean with carb spray. Carb back on, added a new in line filter between the fuel pump and carb. Fuel now won't reach the carb, even with filter detached, no fuel reaches the carb feed?????
    Indications show that the fuel pump is at fault, however this worked perfectly prior to me just cleaning the carb and fitting the filter?
    I don't get it and I've spent /,wasted half my day off trying to sort it!
    Help please! o_O
     
  2. Pipes on the wrong pump connections? Don't fit a filter between the pump and the carb, BTW.
     
    Baysearcher likes this.
  3. Changed the pipes over to double check, absolutely the same symptoms.
     
  4. Odd. Does the pump spurt when you turn the engine over?
     
  5. When I take the feed off the pump, starts pouring fuel out the pipe. Just prior though, nothing came out until I sucked it and then came out well. Fuel com G out well now though.
    Nothing coming out the carb feed but has managed to dribble a bit into the filter.
     
  6. Try primeing the pump with fuel, ive had it before where the pump won't pump air but is fine with fuel
     
    1973daisey likes this.
  7. How do you prime it? Mine is a sealed unit
     
  8. Is your tank feed in the top pipe, carb feed in the bottom?
     
  9. Yes
     
  10. Suck fuel pipe from fuel tank, then connect to pump, cut top off old inline filter and pour fuel down pipe from carb to fill fuel pump
     
    1973daisey and 14platoon like this.
  11. Poptop2

    Poptop2 Administrator

    This ^ or pour a capful in the carb throat and see if it primes itself once started. They usually do!
     
    1973daisey likes this.
  12. matty

    matty Supporter

    Some of the cheep filters collapse especially under pressure

    Try it without the filter

    As said above the filter goes in the low pressure side before the pump
     
  13. Been pouring fuel in the carb bowl, doesn't start to prime.
     
  14. Tried it without the filter, nothing coming out the carb feed pipe at all
     
  15. unfortunately doesnt
     
  16. ill give that a go in the morning.
     
  17. Poptop2

    Poptop2 Administrator

    Blocked then.
     
  18. If priming the pump doesn't work, is it likely to be the pump? Never had issues before o took the carb off, lost a bit of fuel from the pump feed line while I was changing pipes But fuel now coming back from the feed.
     
  19. I take it the pipe from the pump to carb is clear and you can blow/ suck through it ??
     
  20. Yes brand new pipe. Sucked it to check vacuum as well, holds vacuum good. I'm stumped really?
     

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