Fuel in oil again...

Discussion in 'Fuel System & Electrics' started by 76kampa, Apr 2, 2018.

  1. 76kampa

    76kampa Member

    Messages:
    88
    Location:
    Perth
    When I bought this van there was fuel in the oil and I was thinking that alright, the previous owner couldn't get it running right and flooded it too much... Well I have done 300 kms and it appears to have a lot of fuel in the oil again, what the heck!
    It has the single Weber and electric fuel pump.
    Runs fine, no surging.

    What could be the problem?
     
  2. rstucke

    rstucke Well-Known Member

    Messages:
    432
    Location:
    Wamberal NSW AUS
    It's flooding when you turn it off?

    do you have a cut off?
     
  3. 76kampa

    76kampa Member

    Messages:
    88
    Location:
    Perth
    No but I thought the needle on the float should stop it....

    But I do think you are right.
     
  4. cbus

    cbus Well-Known Member

    Messages:
    10,437
    Location:
    sunshine coast
    You may also need a pressure regulator
     
  5. Mordred

    Mordred Super Moderator Staff Member

    Messages:
    2,583
    Location:
    Penna, Hobart
    Most of those electric rattle pumps are not pressure regulated and also have no stop valve when not running, like the original mechanical ones do. Needle valves are not strong enough to stop fuel pressure higher than 5 or so psi and will fail eventually. On top of that if you park head up on a hill without a stop valve and fuel drains out of the float chamber, the needle valve opens and lets fuel gravity feed into the chamber then through the jet into the cylinder and past the rings in to the engine.

    Adrian
     
  6. 76kampa

    76kampa Member

    Messages:
    88
    Location:
    Perth
    I will get a shut off solenoid and try that and a pressure regulator, thanks, hope it solves the problem.

    Maybe I should buy a new mechanical pump?
     
  7. Barry

    Barry Well-Known Member

    Messages:
    2,154
    Location:
    Abbotsford NSW
    Nothing wrong with a mechanical pump setup with a carb.

    If you get a pressure regulator make sure it is a good one and not a rubbish silver dial type
     
  8. KahunaKombi

    KahunaKombi Super Moderator Staff Member

    Messages:
    17,560
    Location:
    Bracken Ridge, Qld
    Had a pierburg electric fuel pump hooked into the system to the dual Dellortto's - they like Webber are not lovers of high pressure fuel in so to control that a pressure regulator valve was fitted.

    Single webber is I guess a dual throat so issue could be the same and not knowing actual electric pump make and specs it is a bit tougher to comment. Generally though a mechanical pump should be sufficient to feed the beast.
     
  9. cbus

    cbus Well-Known Member

    Messages:
    10,437
    Location:
    sunshine coast
    Second Barry's comment on the empi chrome regs. Posts in samba about them coming apart. Another fire risk.
     
  10. KahunaKombi

    KahunaKombi Super Moderator Staff Member

    Messages:
    17,560
    Location:
    Bracken Ridge, Qld
    Found a picture of the setup that was in Igor - round disc style 0-5 with .5 stop increments - the fuel pump is directly forward/underneather the regulator (was set @ 2.0)

    Picture 012.jpg
     
  11. Chidori

    Chidori Active Member

    Messages:
    868
    Location:
    Fitzroy, VIC
    I had one of the Empi silver fuel regulators in my Type 3.
    I had to pull over one day when the engine was running really poorly.
    When I got out and had a look in the engine bay, fuel was p!$$ing out of the regulator, leaving a big puddle on the ground.
    I dont know how it didn't catch fire that day.... but yeh... avoid them like the plague.
     

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