Fuel pressure accumulator exchange

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    Dear community,


    Now that the diaphragm on the old fuel pressure accumulator is leaking after 45 years, it needs to be replaced.

    New part is available. Would replace the fuel filter at the opportunity then also equal.

    BUT:

    The brackets of the old part are already partly through and the screw caps are so tight that I'm afraid to tear off anything when trying to unscrew ... the screw connections sit Bombenfest :(

    Any ideas/tips? The car is located in Munich.

    Thanks and LG

    This post has been automatically translated.

    Hi,


    Spray all fittings with plenty of WD40 or similar for a few days and let it take effect.

    Work with sharp pipe wrenches, first just turn back and forth, then loosen further - if anything moves at all.

    Open-end wrenches make the rotten 6kante even more round.

    If nothing works, use vibration saw to saw open the union sleeves, lengthwise.

    Another solution:

    The connection hoses and tubes also buy new. The 45 years(!!) old rubber hoses are hardly better than the shapeless rust nest 😉

    Only new is faithful (and fireproof).


    VG

    Thommy

    This post has been automatically translated.

    Porsche 928 RS MJ 1981 bugattiblau / 5,2L 360 PS GTS Fahrwerk/Getriebe/Bremsen


    Klimabedienteil instandsetzen lassen und auf warmweiße LED-Beleuchtung in Originaloptik umrüsten? --> Nachricht an mich!




    Like 3

    Thanks Tommy,


    WD-40 has already helped nothing ...

    Do you think I could also saw the old sleeves on the fuel pressure accumulator so? ...so first find a vibration saw.


    The rubber hoses are thank God already "new" - so only so 8 years old.


    Thanks and LG

    This post has been automatically translated.

    Hi,


    see picture




    Do not cut the external thread of the pipe.

    Welding torch is out of the question for obvious reasons. :])


    Then try to loosen the fuel filter.

    Use sharp pipe wrenches, not a worn out one.


    VG
    Thommy

    This post has been automatically translated.

    Porsche 928 RS MJ 1981 bugattiblau / 5,2L 360 PS GTS Fahrwerk/Getriebe/Bremsen


    Klimabedienteil instandsetzen lassen und auf warmweiße LED-Beleuchtung in Originaloptik umrüsten? --> Nachricht an mich!




    Like 1

    There is no longer everything in the range to buy new. Before once check what is still / again available.


    Some parts were not in the catalog for my 78er and I have made myself.

    This post has been automatically translated.

    928 6/1978 Automatik braunkupferdiamant

    Like 2

    My recommendation:

    Clean the bolting area properly with wire brush first ( bare metal ).

    If you are sure that the area is tight...use hot - cold method, ie.

    Apply hot air dryer and cold spray several times, then WD40 on it. Repeat the whole thing several times.

    As a precaution, always keep a fire extinguisher handy.

    Loosen the screw connection:

    Degrease area with brake cleaner (from WD40).

    First try to turn further tight - then turn on first.

    Good luck

    This post has been automatically translated.

    Gruß Walter

    928 MJ 79 - Strosek -Schalter

    928 S4 MJ 88- Automat

    928 S4 MJ 89 - Automat - Restaurierungsobjekt

    928 GTS MJ93-Automat

    987 S - Schalter- Sommerfahrzeug

    Moin together

    who can help me to find the position of the pressure accumulator?

    This post has been automatically translated.

    :pfeil: Wheel arch rear right, front under wheel arch cover

    This post has been automatically translated.

    Porsche 928 RS MJ 1981 bugattiblau / 5,2L 360 PS GTS Fahrwerk/Getriebe/Bremsen


    Klimabedienteil instandsetzen lassen und auf warmweiße LED-Beleuchtung in Originaloptik umrüsten? --> Nachricht an mich!




    Best thanks,

    I am troubleshooting the following problem:

    It started with stuttering running in the high speed range. Allegedly fuel pump defective, this I have had replaced in the workshop, without success. On the contrary! In cold condition he ran quite ok, after a short time hardly gas acceptance, stutter, hum....

    Have then distributor caps, fingers and the complete ignition cables against existing, used parts exchanged, without success. Then I replaced the spark plugs, after that it suddenly ran fine, almost normal. I also checked the fuel pressure regulators, seem to be fine. Now on the third test drive, in warm condition, the old problem occurred again. If anyone knows this problem, or has an idea, please feel free to report.

    until then

    Arne

    PS: My 928 is BJ. 8.86, since 2016 in my possession.

    This post has been automatically translated.

    To change used against used parts was already often the horror

    during the subsequent troubleshooting.

    Customers have removed one fault and installed three.

    From experience I advise against such work.

    I also have my own experience with testing parts that "seem" to be OK.

    Checking properly and not trying is the best solution.


    Greetings Gerd

    This post has been automatically translated.

    Porsche 928 GTS 1.Hand mitternachtsblau

    Porsche 928 S4 taubenblau

    Mercedes 250SE W111Coupe with Matching Numbers Silber
    Mercedes 300CE W124 blauschwarz met

    Mercedes 420 SE W126 silbermet

    Chrysler Crossfire Cabrio schwarz
    Mercedes 500SL smaragdschwarz
    Fiat Barchetta schwarzmet.

    Like 1

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