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456, fuel smell 550 575

Discussion in '456/550/575' started by au-yt, Feb 21, 2016.

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  1. au-yt

    au-yt F1 Veteran

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    Graeme
    #1 au-yt, Feb 21, 2016
    Last edited by a moderator: Sep 7, 2017
    I have been aware of a fuel smell in and around the boot of my car since I got it back in December, I looked and at the time I assumed it was residual fuel on the carpet and it seemed to dissipate.
    Yesterday I 3/4 filled the tank and after coming home I could smell raw fuel around the LH rear wheel. I removed the tank cover from the boot and the RH pump housing was wet with fuel.
    I cleaned it but it was still weeping. It turns out the fuel line retaining stud housing was badly cracked and only when the tank is half full did it appear. oddly backing the nut of the fuel weep stopped.
    I would conclude that over tightening the nut is the cause when the mounts were changed.
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  2. F456M

    F456M F1 Rookie

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    #2 F456M, Feb 21, 2016
    Thanks. I have also felt a small fume of gasoline some times in both the 456 and 550... Never really found any leaks. I will check :)
     
  3. au-yt

    au-yt F1 Veteran

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    #3 au-yt, Feb 21, 2016
    I am planning to use a plastic tank repair kit like DynaGrip Quicksteel as temp repair.
    Any other suggestions
     
  4. LjT

    LjT Karting

    Feb 26, 2013
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    #4 LjT, Feb 21, 2016
    Grame
     
  5. LjT

    LjT Karting

    Feb 26, 2013
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    #5 LjT, Feb 21, 2016
    Grame

    I have the same issue with my 550. I have ordered both pump covers and for half year now, the items are still on backorder. So the shop used some kind of adhesive to stick it. No fuel smell now.
     
  6. ferraridriver

    ferraridriver F1 Rookie

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    #6 ferraridriver, Feb 21, 2016
  7. tazandjan

    tazandjan Three Time F1 World Champ
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    #7 tazandjan, Feb 21, 2016
  8. au-yt

    au-yt F1 Veteran

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    #8 au-yt, Feb 21, 2016
    was wondering about that, so a quick fix is in order , I have a number of Jobs to do on my car so I will add these to the list.
     
  9. au-yt

    au-yt F1 Veteran

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    #9 au-yt, Feb 21, 2016
  10. ferraridriver

    ferraridriver F1 Rookie

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    #10 ferraridriver, Feb 22, 2016
    email Ricambi, they're the dealer, not me
     
  11. exoticfan001

    exoticfan001 Rookie

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    #11 exoticfan001, Feb 22, 2016
    I just experienced this with my 575. After 3 months of trying to find a quick solution for one leaking pump cover, the other one started leaking. In December, I bit the bullet and had it transported to my dealer. They replaced both fuel pump assemblies at a total cost of $3,320.19 (and 1 month wait for parts). I figured that these cracks are just the beginning of further deterioration. A bit pricey, but I have peace of mind knowing that the car won't become a rolling Molotov cocktail again for at least 10 years!
     
  12. ferraridriver

    ferraridriver F1 Rookie

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    #12 ferraridriver, Feb 22, 2016
    I'm really surprised to hear that 575 fuel pump covers leak, they area completely different design and mount the pump differently. There should be no stress on a 575 pump cover. Even the plastic is different.

    That cost seems awfully high considering that Eurospares has them listed at $286.26 for a complete pump.
     
  13. au-yt

    au-yt F1 Veteran

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    #13 au-yt, Feb 22, 2016
    sorry about that, I have also found Eurospares list the cover separately for £78.33 Each subject to availability. which means they don't have any I will ring them tonight.
     
  14. tazandjan

    tazandjan Three Time F1 World Champ
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    #14 tazandjan, Feb 22, 2016
    Dave- Same here. Fuel pumps or leaking covers are not normally a problem with 575Ms.

    That price for repairs is atrocious. Would want to take a close look at the receipt on that one. Wonder if they pulled the fuel tank?

    Did Eurospares stop putting the parts catalogs online? Could not find them.

    Updated pump, 239189, is 278 pounds from Maranello Classic Parts since Ricambi did not have a price quoted.
     
  15. ferraridriver

    ferraridriver F1 Rookie

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    #15 ferraridriver, Feb 22, 2016
  16. tazandjan

    tazandjan Three Time F1 World Champ
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    #16 tazandjan, Feb 22, 2016
    Dave- Yup, I just had a brain fart. Found the pump for $312, like you said. Big difference between their price and Maranello Classic Parts this time, which is unusual.
     
  17. au-yt

    au-yt F1 Veteran

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    #17 au-yt, Mar 4, 2016
    New Pump plates arrived, fitting them will need new hose as the original hose is a shrink fit.
    As the hose will be in the fuel tank it will need to be a fuel hose suitable for submersion
    Gates Make a hose which meets the required spec.SAE 30R10 for hose in fuel including ethanol fuel.
    http://www.gates.com/oreilly/PDFs/Fuel%20Systems.pdf

    The Fuel pressure rating on this is 100PSI but knowing that this is a SAE Spec hose the testing requirements will be higher than that for the hose to meet the SAE 30R10 requirements. However I am going to use experience with Standards rather than pay the $74USD to SEA web site to find out I will ask Gates direct
     
  18. ferraridriver

    ferraridriver F1 Rookie

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    #18 ferraridriver, Mar 4, 2016
    You can buy corrugated plastic fuel hose and warm the ends with a hair dryer then push them on. I bought a bunch of corrugated hoses when I did the 575 pump conversion. No problems and no rubber hoses to worry about.

    http://www.ferrarichat.com/forum/456-550-575-sponsored-bradan/417423-575-fuel-pump-550-a.html
     
  19. au-yt

    au-yt F1 Veteran

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    #19 au-yt, Mar 5, 2016
    Thanks for the link
    Good to know about the corrugated fuel hose I would never of thought it was available, and I see summit has it in different sizes.
     
  20. deanhalter

    deanhalter Formula Junior

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    #20 deanhalter, Mar 7, 2016
    Superformance have a nifty metal cover for ~350 euros:

    Fuel System Parts for Ferrari 456, 550, 575, 599 & 612 - Superformance

    No need to take the tank out to remove these, I have had both of them out in my car and the access is very straightforward from the trunk. The originals are plastic and will crack if overtightened. If you install it with care, I would go with the plastic one as they are cheaper...

    Note that if you plan this job, make sure you order all the rubber pieces that interface with the pump in the tank. They will have disintegrated by now and you will wait a while for them. Note the difficult to find piece is a dead match for an Alfa Romeo part (it escapes me what the part number is, but it is the cylindrical rubber collet that the pump slides into).

    Cleaning all that rubber out of the tank is a pain in the neck and must be approached with care, you are working in a gasoline fuel vapor environment after all...
     
  21. Sir Paul

    Sir Paul Formula Junior

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    #21 Sir Paul, Mar 15, 2016
  22. au-yt

    au-yt F1 Veteran

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    #22 au-yt, Mar 19, 2016
    Last edited by a moderator: Sep 7, 2017
    Some Pictures and some pictorial notes.
    The Threads on the 5/15 NPT threads need shortening to allow the external fuel connection to seat all 4 locations the picture shows befor and after machining down -3mm. they are a bit of fiddle to get them started, tek care they want to cross thread.
    The Steel support arms on my car were corroded and steel to Ally causes dissimilar metal corrosion issues, so the arms are acid etched and painted all over and at the point of contact with the new base plates with a fuel resistant paint.
    The Corrugated tubes are ATL, which Teflon they need heating until transparent before they will push over the connections.
    The 6 and 8 mm electrical connections could do with slots on the thread ends to hold them from rotating when done up.
    Getting them in and doing up the ring is a sob job two people would help as the pumps are effectivley spring loaded in position, and yes they were seated in the cradle in the tank.
    The rubber base pad of the pump comes off, 5 minute Arildte works, hot glue gun doesn't.
    Removal and installation tool is a copy of the one in the picture 6mm pins 114 apart, I used 1.6 mm x 3/4 steel tube so I could get a bar inside it to undo the rings and do them up.
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  23. tazandjan

    tazandjan Three Time F1 World Champ
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    #23 tazandjan, Mar 19, 2016
    Looks great. Would take a sledge hammer to crack one of those.
     
  24. Cribbj

    Cribbj Formula 3
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    #24 Cribbj, Mar 19, 2016
    I really like those metal pump covers; I just wish they'd done the bushing for the electrical pass throughs better. IMO, that's the only weak point in an otherwise very good design. If I were buying those covers, I'd try to get a spare bushing in case it leaks in the future.
     
  25. au-yt

    au-yt F1 Veteran

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    #25 au-yt, Mar 20, 2016
    I was hesitant to dismantle them for the fear of causing a leak.
    There appears to be O-rings around the Hex drive bolt threads both ends compressed by washers and there are two halves with o-rings in the halves so it would only need to be O-Ring to replace if there was an issue.
     
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