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Yellow78

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About Yellow78

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    Registered User

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  • Gender
    Male
  • Map Location
    Houston
  • Occupation
    VP of Mfg.

My Z Cars

  • About My Cars
    1978 280z with 28,000 miles original

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  1. Yellow78

    Electrical Fuel Pump Pressure Problems

    L”. THE NEW Fuel System 1. Brand new in-line AIRTECH fuel pump. 2. Brand new rubble lines 3/8” from tank AIRTECH PUMP. 3. Brand new rubber 5”/15” fuel lines to AIRTECH fuel pump. 4. Brand new rubber 5”/15” fuel lines fuel filter. 5.Brand new rubber 5”/15” fuel lines to Brand new PELLERT rail. 6 Brand new rubber 5”/15” fuel lines out PELLERT rail. 7. Brand new rubber 5”/15” fuel lines out to a FUEl REGULATE; 8. Brand new rubber 5”/15” fuel lines in of FUEl REGULATE; PELLERT. 9. Brand new rubber 5”/15” fuel lines out of FUEl REGULATE; Again thanks for all you HELP
  2. Yellow78

    Electrical Fuel Pump Pressure Problems

    I went with theAir tank pump seems to work fine at 40 psi also replaced the fuel regulator car runs like a champ thank you everybody for helping me find Gremlins. Sent from my iPad using Classic Zcar Club mobile
  3. Yellow78

    Electrical Fuel Pump Pressure Problems

    Thanks for the info I think I’ll go with the AirTech pump. Sent from my iPad using Classic Zcar Club mobile
  4. Yellow78

    Electrical Fuel Pump Pressure Problems

    Fusion on which pump to get. Will make a decision and keep you all posted. Sent from my iPad using Classic Zcar Club mobile
  5. Yellow78

    Electrical Fuel Pump Pressure Problems

    That’s the same pump that I got from a different vendor on Amazon and only get 26PSI. AirTech unit does not say how much PSI or GPH. Sent from my iPad using Classic Zcar Club mobile
  6. Yellow78

    Electrical Fuel Pump Pressure Problems

    I talked to z car depot and they said they sell these to a lot of Z owners and it’s a good price. Plus it has a nice filter before the pump. Can’t find anyone to actually tell me what BOSCH unit would work and is available was not copied crap. This is the first pump besides the stock ones. With everything hooked up correctly I got Carly 2PSI with return lines back to the tank if I clamped off I only get 26PSI. Sent from my iPad using Classic Zcar Club mobile
  7. Yellow78

    Electrical Fuel Pump Pressure Problems

    With the aftermarket pump that I had on the car was only giving me 26 PSI there was plenty of fuel at 26 PSI coming to the filter under the hood. Of course 26 PSI is not enough to keep the L6 running correctly. At this point I’m sure I’ve got a bad pump from the supplier, I will return it and get a different pump. Thanking of this one: https://zcardepot.com/catalog/product/view/id/2535/s/electric-fuel-pump-and-filter-combo-bracket-efi/category/349/ Sent from my iPad using Classic Zcar Club mobile
  8. Yellow78

    Electrical Fuel Pump Pressure Problems

    OK I did the electrical just like the video and I came up with around a 2 V drop Sent from my iPad using Classic Zcar Club mobile
  9. Yellow78

    Electrical Fuel Pump Pressure Problems

    I can check again tonight but I don’t see this being an electrical drop issue I see it being just a pump that won’t pump enough pressure.
  10. Yellow78

    Electrical Fuel Pump Pressure Problems

    Yes yes just like the video.
  11. Yellow78

    Electrical Fuel Pump Pressure Problems

    Yes it is new . I holds pressure fine at 26PSI To make sure I was doing the check correctly I watched this video.
  12. Yellow78

    Electrical Fuel Pump Pressure Problems

    That’s the one I got on there now they had only pump up to 26 PSI. Maybe I just got a bad one. Sent from my iPhone using Classic Zcar Club mobile
  13. Yellow78

    Electrical Fuel Pump Pressure Problems

    So it is definitely the pump is not pumping up to adequate pressure. I’ve done electrical test with a pump under load and I get less than .02 voltage drop on the positive side and .005 on the negative side. So I’m thinking that BOSCH 69136 would be adequate pump for my 280. Has anyone used the BOSCH 69136. On Amazon for $74 Any feedback would be appreciated. Sent from my iPad using Classic Zcar Club mobile
  14. Yellow78

    Electrical Fuel Pump Pressure Problems

    So the Bosch fuel pump, I spoke of is the Bosch 0580254044 fuel pump, i’ve read they had a lot of the Z guys use this pump. I’ll check the resistance on the pump tomorrow. Thanks for all your help any other suggestions always welcome.
  15. Yellow78

    Electrical Fuel Pump Pressure Problems

    I understand checking the pump under load but what will that tell me? I have checked the wiring with it not connected to anything and I’m getting 12V I like the idea of using a smaller fuel tank to eliminate that is not any fuel tank problem. Sent from my iPad using Classic Zcar Club mobile
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