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Thread: Ascona Fuel Sender Micro-Surgery

  1. #41
    tomking My location tomking's Avatar
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    I just soldered on an old carburetor float to replace my bad brass float.
    Last edited by tekenaar; 05-09-2008 at 11:46 AM. Reason: carburator?
    TMK

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  3. #42
    UFOpel Investigator Site Supporter My location Aardvaark (R.I.P.)'s Avatar
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    Quote Originally Posted by tomking View Post
    I just soldered on an old carburator float to replace my bad brass float.
    I'm wondering how the various sender floats are attached on Opels from the factory. I know how the '75 cork float is attached. Never got into my '73 Manta's. Dr. Manta shows a new sender asm. for carb engines. But it's cork like the '75's.
    Last edited by tekenaar; 05-09-2008 at 11:48 AM. Reason: varous
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  4. #43
    Cunning Linguist Site Supporter My location tekenaar's Avatar
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    ExclamationM.A.K. floats

    Quote Originally Posted by Aardvaark View Post
    I'm wondering how the various sender floats are attached on Opels from the factory. I know how the '75 cork float is attached. Never got into my '73 Manta's. Dr. Manta shows a new sender asm. for carb engines. But it's cork like the '75's.
    If memory serves, believe they're attached like the '75 models . . .



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  6. #44
    Moderator Site Supporter neuropel's Avatar
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    I removed the sender from my Manta's tank today and my problem is definitely the cork float. It's completely saturated, and pretty much fell apart in my fingers when I tried removing it from the float arm. A quick check of the sender showed that everything is working fine. It reads full scale, so if I can replace the float I should be all set.

    I've called EVERY autoparts store around to see if I can find that 1/8" gasket Otto mentioned, and NO ONE carries it (it's far cheaper to call ahead than drive these days). I can only get the 1/16" stuff, so I guess I'll make two and seal them together.

    Todd
    Paddle faster...I hear banjo music!
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  7. #45
    Project 1450 supporter... Site Supporter My location RallyBob's Avatar
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    Quote Originally Posted by neuropel View Post
    I've called EVERY autoparts store around to see if I can find that 1/8" gasket Otto mentioned, and NO ONE carries it (it's far cheaper to call ahead than drive these days). I can only get the 1/16" stuff, so I guess I'll make two and seal them together.

    Todd

    Todd, I have some gasket material (McMaster-Carr to the rescue!). I just made a sender gasket last week for a '75 fuel tank. It's .090" thick I believe, and it is cork with rubber so it's good for fuel.
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  8. #46
    Moderator Site Supporter neuropel's Avatar
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    Well, just back home after spending the late afternoon/evening trying to get a cork and the right gasket material. Struck out at every turn! No luck finding the cork for a float (shop that has it closes early on Sat and Sun, but I'm 90% sure I can get it tomorrow). Also still no luck finding the 1/8" gasket, so I picked up a sheet of 1/16" cork rubber and hopefully that'll work. The only problem with McMaster Carr for me is that I need this stuff yesterday. I'm not at home through the week, so I have Saturdays and Sunday mornings. To be honest, this is just a short term fix anyway as the tank will be coming out when I switch over to EFI.

    On another note, I did some quick calculations based on the last time I filled up the tank, minus what I drained out today, and determined the car is getting REALLY crappy fuel mileage (It's been difficult to tell without a fuel gauge). It's running ok, but the dreadful mileage (along with the gas fumes that hit me in the face every time I walk into my garage after I park it) tells me I must be running way too rich. Hopefully I'll have time to change plugs and at least lean it out a bit prior to Carlisle.

    Todd
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  9. #47
    UFOpel Investigator Site Supporter My location Aardvaark (R.I.P.)'s Avatar
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    NAPA carries the FelPro cork/rubber 1/8 gasket sheets in 18x36" but
    it's about $25 so I passed on it and went with stacking two 1/16" thick
    ones. Like I posted earlier, I'd advise not putting the 5 small screw holes
    in the gasket(s) ahead of time, but just allowing the self tapping sheet metal screws Opel used to make the holes in the gaskets at assembly so the threads seal properly as they are not blind thread holes in the tank. Mine has not leaked in four days with a full tank.
    NAPAONLINE®
    See PN/FPG3007.

    Also, the original cork float has sat on the work bench for four days
    now, and now only weighs about 1/10th what it did when removed after
    the gas has evaporated out of it. After 30plus years it was pretty much
    a sponge. I didn't coat my new cork with anything, but if it doesn't
    hold, might coat the next one with Permatex No.1 which hardens.
    Last edited by Aardvaark (R.I.P.); 05-11-2008 at 12:48 PM.
    -Mark
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    this Opel Manta. I expect big returns.😅
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  10. #48
    Opeler My location dcm013's Avatar
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    Mark, can you tell me the approx. dimensions of the cork? I'd like to have one on hand before I drop the tank.
    Thanks,
    Don

  11. #49
    Moderator Site Supporter neuropel's Avatar
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    I just replaced mine today with a cork that was 1.75" tapering to 1.5". It's a little bigger than stock, but it's working great so far. First time I've seen a full tank register in my car! In an earlier post in this thread Mark mentioned that he used a cork 1 7/16" tapering to 1 3/16". I really don't think it's all that critical as long as you get one close in size that will float in the fuel to give the arm full movement.

    A quick and easy fix for a common problem!

    Todd K.
    Paddle faster...I hear banjo music!
    ________________
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    1974 Manta GT/E 2.0 LHU
    1973 Manta Rallye 2.5L
    1967 Kadett L Rallye 1.1L

  12. #50
    UFOpel Investigator Site Supporter My location Aardvaark (R.I.P.)'s Avatar
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    Quote Originally Posted by neuropel View Post
    I just replaced mine today with a cork that was 1.75" tapering to 1.5". It's a little bigger than stock, but it's working great so far. First time I've seen a full tank register in my car! In an earlier post in this thread Mark mentioned that he used a cork 1 7/16" tapering to 1 3/16". I really don't think it's all that critical as long as you get one close in size that will float in the fuel to give the arm full movement.

    A quick and easy fix for a common problem!

    Todd K.
    That's my take too. Just get a cork that is close. Most hardware stores and home improvement "big box" stores sell them in various sizes in the fasteners
    section along with springs, o-rings, bushings, c-clips and other small items.
    They sell solid rubber stoppers for bottles too, but I don't know how well they
    would float or hold up in gas. Btw. bottle stopper corks are sold by an industry sizing . That original cork Opel used is 1-3/8" dia x 1-1/2" long. If the cork you buy is long, it can be trimmed and the small center hole added.
    Last edited by Aardvaark (R.I.P.); 05-11-2008 at 07:59 PM.
    -Mark
    '75 Manta
    Having invested my life savings into
    this Opel Manta. I expect big returns.😅
    Link to my album of Opel catalogs
    and magazine articles:
    http://www.opelgt.com/photopost/show...ser/23031/sl/a

  13. #51
    Opeler My location Gary Sullivan's Avatar
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    Testing voltage stabilizer?

    I know you guys were talking about testing instrument gauge voltage stabilizers a while back on this thread. I am not finding any answer as to how to do that. Any simple test for those? Thanks
    NYAsconaGuy

  14. #52
    OPEL PARTS GREECE alpharm's Avatar
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    Quote Originally Posted by Gary Sullivan View Post
    I know you guys were talking about testing instrument gauge voltage stabilizers a while back on this thread. I am not finding any answer as to how to do that. Any simple test for those? Thanks
    Push the gas pedal and you will see your fuel tank gas ''filling up''
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  15. #53
    Opeler FReis's Avatar
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    Hi,
    My Ascona's sensor is not completely dead, but it's very inaccurate.
    I was thinking of removing it and try some tips that I saw in this thread, but if it is irrecoverable there will be chance to find a new one?
    When removing it is supposed to replace the gasket, is it necessary to use an additional sealant or just the gasket will be enough?
    Thanks in advance
    Fernando

  16. #54
    Site Founder My location Gary's Avatar
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    Quote Originally Posted by FReis View Post
    Hi,
    My Ascona's sensor is not completely dead, but it's very inaccurate.
    I was thinking of removing it and try some tips that I saw in this thread, but if it is irrecoverable there will be chance to find a new one?
    When removing it is supposed to replace the gasket, is it necessary to use an additional sealant or just the gasket will be enough?
    Thanks in advance
    Fernando
    I made a gasket from cork sheet material and used sealer. No leaks.

    Old mechanics trick: Place the sheet over the tanks opening and using the ball end of a ball pean hammer, tap around the opening and into the mounting holes. Then trim the outside.
    Last edited by Gary; 5 Days Ago at 09:19 AM.
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