PotM GrandMarq.NET - Panther Headquarters Forum Index PotM
GMN Chat Room GMN's STORE!! GMN's Gallery Please!!
Results 1 to 10 of 10

Thread: fuel tank leaking

  1. #1

    Default fuel tank leaking

    So my fuel tank leaked all over the place while in storage, so i had to deal with that, and that involved me draining the tank and removing it from the car (since i dont want to deal with it in the spring) I was wondering if there are any tips you guys could give me for re-assembly, I currently have a spectre premium f3 tank ordered, any help would be appreciated, thanks

  2. #2
    I'm an air-conditioned gypsy gadget73's Avatar
    Join Date
    Jan 2005
    Posts
    39,565

    Default

    Longer studs, or unscrew the existing ones as far as you can to make your life easier. Replace the seal at the fill neck, consider a new boot up at the fill door end too. New O-rings under the fuel pump and sending unit plates, and if either of those are questionable, change it while its already out. Flush out the evap vent thing that sits at the top too. It gets gummed up with old fuel and then you get a fuel smell and the tank hissing at you when removing the cap.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  3. #3
    fomoco panthers !
    Join Date
    May 2011
    Location
    Bangor,Maine
    Posts
    3,258

    Default

    I have always put a thin piece of rubber strap between the gas tank straps and the tank. It prevents sand, dirt from getting between those areas and putting a pinhole leak in the new tank. When I lived in the Ca. desert, that was a problem with the sand. In the rust belt, salt or the salt brine would be a problem. Just a suggestion.

  4. #4
    Member
    Join Date
    Jul 2013
    Location
    Central North Carolina
    Posts
    332

    Default

    Internal rust and rot is common with our Crown Vics. Check the filler neck carefully and make sure it's not rusted through as well (fuel pressure issues could result from a leaky filler neck). Take gadget73's advise! Also don't trust that old filler neck doughnut. Good luck and wear safety goggles when working.

  5. #5
    Member WagonMan's Avatar
    Join Date
    Sep 2004
    Location
    Bridgewater Ct.
    Posts
    635

    Default

    I just put a new tank in my 89 Wagon. The lock ring provided with the Spectra fuel tank is junk. Try to use the original if it is in good shape. WagonMan
    1990 Colony Park
    1970 HEMI Superbird

  6. #6
    Member a_d_a_m's Avatar
    Join Date
    Mar 2009
    Location
    Cleveland
    Posts
    389

    Default

    It must be the time of year for tanks. I just had to put one in the Squire. Had a friend's lift open for the day, so I used it and his help.

    The Spectra was sold out, so I ordered the Liland Global IF19 at $95.79 + the ride minus 5% from RockAuto.

    Absolute +1 on longer studs - not sure what of each dimension changed but the factory studs do not work. My filler neck donut was fine; couldn't find one local anyway so I reused it. The lock ring provided with the Liland Global tank was a tight fit, but did seal tightly with the provided O-ring gasket.

    '91 LTD Country Squire LX | 2010 P7B | '03 Marauder

    formerly: '02 MGM, '04 MGM, '04 MGM v2.0, '04 MM, '07 P71 w/5-speed, '03 SAP P71, '04 CVLX (now in pantera77's stable)

  7. #7
    2 decades of DDing Box Panthers, now in a Whale VicCrownVic's Avatar
    Join Date
    Nov 2012
    Location
    Shelby Township, MI
    Posts
    3,212

    Default

    Quote Originally Posted by a_d_a_m View Post
    It must be the time of year for tanks.

    Absolute +1 on longer studs - not sure what of each dimension changed but the factory studs do not work.
    I don't need to replace the tank, but do have a new fuel pump hanger assembly to go in on Saturday since we put a hole in the return tube last week on the 7 year old hanger assembly. (Luckily '90+ non wagons don't require tank dropping.)

    The factory studs were longer at the factory, the nut was put on then the studs were broke off at pre-scored spots leaving the studs short. At least that's the explanation I've heard a few times.
    Vic

    ~ 1998 Mercury Grand Marquis LS - new DD
    ~ 1991 Mercury Grand Marquis LS "The Scab" - plenty of rot, summer DD
    ~ 1997 GMC Yukon - wannabe winter DD - returning summer 2020, I finally have an engine
    ~ 1991 Mercury Grand Marquis GS "The Ice Car" - Rotting Retired Winter DD
    ~ 1989 Mercury Grand Marquis GS - Rotting Retired DD
    Gone but not forgotten:
    ~ 1988 Country Squire ~ 1987 Ford Crown Vic

  8. #8

    Default

    I ended up having to use the new ring, because the old one was in bad condition, hopefully it will be fine.

  9. #9

    Default

    Also whats the size for the stud and nut for my 85' (just in case I have to drop the tank again)

  10. #10
    I'm an air-conditioned gypsy gadget73's Avatar
    Join Date
    Jan 2005
    Posts
    39,565

    Default

    something metric I'm sure. M10 or M12 most likely. Nut size would mostly tell you. M10 usually uses a 17mm socket , M12 is 19mm.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
GMN Approved Links!


www.rockauto.com www.adtr.net