Warning - aftermarket fuel pumps for R8/R10 engines
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Thread: Warning - aftermarket fuel pumps for R8/R10 engines

  1. #1
    Too many posts! JohnW's Avatar
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    Default Warning - aftermarket fuel pumps for R8/R10 engines

    Well, I've been praising my new fuel pump "avec levier" for a few years now. It is the perfect solution for a car used intermittently (unless you go electric), as you can hand prime the carburettor rather than cranking the engine enough to pump up the fuel. So far so good and the pump works perfectly after quite a few years and I'd guess 25,000 km.

    Now the warning. I fitted new plugs to the R8 today and noticed a bit of discolouration on the top of the pump as I cast my eye carefully over a familiar friend. Ah..... What I found was exactly the same as the pressed-in brass fuel line fitting on Solex carburettors. Just like the "Solex problem" it was leaking, the slight amount of fuel on the top of the pump had attracted dust and the fitting pulled out completely just by hand. It wasn't partly out, fortunately. This outlet faces upwards!! So, had it come out when running, the pump would have sprayed fuel everywhere, and upwards.

    I've reverted to my old solution for the 4CV and knurled the brass tube by rolling a narrow file diagonally across it and glued it back in. Alan Moore made a suggestion a while back about a suitable glue if I recall correctly.
    So, please don't forget the other end of the fuel line, that at the fuel pump outlet!

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    JohnW

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    Fellow Frogger! potentz's Avatar
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    ive had this happen on a r10 pump!!!just exited a fast right hand hairpin and smelled fuel.pulled over and there was fuel sprayed everywhere.the spigot had simply popped out of the housing!!! very close call.

  3. #3
    Fellow Frogger! geodon's Avatar
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    Thanks JW. The priming handle on the Dauphine is non-functional so I'm considering a new pump but will strip it down 1st as I see primer return springs are available as a spare ergo it's obviously a common fault?

    Decades ago, I bought a 1964 Beetle for parts.

    Engine fire.

    The brass spigot on the "blow" side of the pump came out & sprayed fuel up. Sparks from the from the generator commutator & brushes did the rest. I always grab them (and the one at the carb) with multi-grips & try to pull them out. If they came out they went back in with a thin layer of Araldite. I like the idea of burring it 1st. Thanks!
    I was also anal about replacing the cover on the gen. brushes inspection ports.
    "Pauses for audience applause......not a sausage!"....Bluebottle

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  4. #4
    1000+ Posts alan moore's Avatar
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    Once the brass spigot is refitted, a little Loctite 290 Super Wick in around it will creep in and seal as well as prevent it falling out. Great on racecars and old single motorcycle bolts as well. You don't have to disassemble the parts, only put on the end of the thread and it will creep in and prevent the nut from undoing. The nut can still be undone with standard tools later.
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  5. #5
    Too many posts! JohnW's Avatar
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    Quote Originally Posted by alan moore View Post
    Once the brass spigot is refitted, a little Loctite 290 Super Wick in around it will creep in and seal as well as prevent it falling out. Great on racecars and old single motorcycle bolts as well. You don't have to disassemble the parts, only put on the end of the thread and it will creep in and prevent the nut from undoing. The nut can still be undone with standard tools later.
    Thanks Alan. I must buy some!

    Hope all's well over there.

    Cheers
    JohnW

    Renault 4CV 1951
    Renault R8 1965
    Renault Scenic 2005 (wife's)
    Renault Scenic 2007 (mine)
    Renault Scenic 2006 (daughter's)
    CitroŽn CX Pallas 1980

    National Co-ordinator, Renault 4CV Register of Australia

  6. #6
    COL
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    Quote Originally Posted by alan moore View Post
    Once the brass spigot is refitted, a little Loctite 290 Super Wick in around it will creep in and seal as well as prevent it falling out. Great on racecars and old single motorcycle bolts as well. You don't have to disassemble the parts, only put on the end of the thread and it will creep in and prevent the nut from undoing. The nut can still be undone with standard tools later.
    Heres some info on the Loctite 290 Alan suggested. Loctite ģ 290? Threadlocker - Henkel
    Regards Col

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