..VW type 4 fuel pressure ok?

Discussion in 'Mech Tech' started by areksilverfish, Jul 21, 2018.

  1. areksilverfish

    areksilverfish Supporter

    ..evening all..
    ..Im having a little? issue with my engine now..well actually it always ran like crap..I mean at idle..I decided to swap old solex’s with dells and what a differencehowever..engines shaking at idle like hell I must admit all the basics been checked countless of times..anything suspicious replaced..this is actually my last idea to check the fuel pressure and what your thoughts guys?..Im not sure why it flucktuates at idle?..what it means?



    Cheers
    Arek


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  2. Looks ok. The stock pump is membrane pump, which will pulse the fuel supply. The float chambers in the carbs make sure that the pulsing doesn't get through to the engine.
     
    areksilverfish likes this.
  3. areksilverfish

    areksilverfish Supporter

    ..thanks
    ..at least one thing on the list crossed off..I had to add one fuel pump gasket tho as the pressure was about 3-4 psi


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    snotty likes this.
  4.  
  5. Don't put fuel non returns or pressure regulators to the carb.
    Waste of money and more to go wrong.
    Keep it simple.
     
  6. How much slacks on your crank end float is more to worry about.
     
  7. Zed

    Zed Gradually getting grumpier

    Depends on the carbs and the fuel pressure.
    Another thing yes but that's like saying don't worry about your brakes not working if your steering is wobbly.
     
    Baysearcher and snotty like this.
  8. Not if your pump produces more pressure than the carbs can handle.
     
  9. That's called an MOT
     
  10. Eh?
     
  11. They don't call it that for nothing.
     
  12. Well, I'll go 't foot of our stairs.
     
  13. Sorry there,I've got a Marmitety on as had a new clutch fitted and have too much end play.Peeed me off it has.
     
    Zed likes this.
  14. Marmitety on I meant
     
  15. Zed

    Zed Gradually getting grumpier

    I was going to ask if you were *******ed but I'm far too polite. :D
     
    snotty likes this.
  16. Hows your end float play?
     
  17. theBusmonkey

    theBusmonkey Sponsor

    You seem a bit obsessed...:)
     
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  18. Zed

    Zed Gradually getting grumpier

    Perfect - mid spec thanks.
    You are unlucky, it's rare to find a type-4 with end float out of spec.
     
  19. Extremely rare .. I would pull each plug lead in turn to see if any difference.. possible blocked idle jet
     
  20. Zed

    Zed Gradually getting grumpier

    It's a 4 year old thread. :)
     
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