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Thread: Pre GA (1990) EFI fuel rail leak...rebuild or replace...

  1. #1
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    Pre GA (1990) EFI fuel rail leak...rebuild or replace...

    Howdy... On my reasonably trusty 89 (FA) rangie, the flapper system - aka 4CU - have the injectors that connect to the fuel rail with a length of rubber pipe crimped at the injector end and fixed with a jubilee clip to the rail end.

    After I re-wired the system some months ago, I installed a fuel cut out to stop the electric pump from burning itself out whilst on gas - as evidenced by a melted fuse holder and the whine the pump gave whilst operating.

    Whether that mod or it's just age catching up with the injectors is uncertain - but, as shown:

    the connector to injector 1 now wants to leak.

    (You can just see the vertical splits on the darker section).

    Question - Can the crimp fitting be (Gently) removed with a dremel, and fresh EFI fuel line replaced along with the same clips that attach to the fuel rail

    or

    Has anyone had those sort of injectors repaired ( Re-conditioned?)

    or

    Would a fuel rail/injectors/regulator from a later vehicle be a better idea?

  2. #2
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    So far, I have found some interesting information: The same sort of Bosch injector - 0280150 105/121/123/127 & 128 used in the 4CU system is a 'tailed' injector, and was also used in Triumphs (Possibly Jag's), Alfa's and Fiat's of the period 87- 89. There is a listing on ebay that should be able to rebuild them @$24 ea, has anyone in SEQ been able to get a better deal...

  3. #3
    mike 90 RR Guest
    Quote Originally Posted by langy View Post
    So far, should be able to rebuild them @$24 ea
    Sounds like you've got a good deal @ 24 a pop already .....

    Mike

  4. #4
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    Question - Can the crimp fitting be (Gently) removed with a dremel, and fresh EFI fuel line replaced along with the same clips that attach to the fuel rail

    or

    Has anyone had those sort of injectors repaired ( Re-conditioned?)

    or

    Would a fuel rail/injectors/regulator from a later vehicle be a better idea?[/QUOTE]

    On my brother's RR '89 I did not need to remove the crimp, its just a collar. When I replaced all of the hoses with premium silicone injection hose it got clamps fitted both ends. By the way, I used a set of Rover SD1 injectors a friend had kept for spares, because my brothers' refused to run after 2 years on LPG without petrol. His fuel pump had failed and he was too lazy to fix it until he planned a trip across the continent.

  5. #5
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    Langy, AFAIR, good LPG installers allowed the fuel pump to run with the injectors turned off to ensure that none of the EFI bits failed as a result of no fuel movement.

    We've had four conversions done by LPG1 in this way, and we have never had a problem such as you have outlined.

    I agree with previous posts suggesting the replacement of the pressure hose from rail to injector is simply executed, but I'd examine a bit more closely the reason for the pump damage you have described.

    Best wishes for the New Year.

    HTH

    Pete
    Last edited by Pierre; 9th January 2010 at 04:31 PM. Reason: ./s
    Dizzie, 08 D3 TDV6 SE

  6. #6
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    Outstanding advice gentlemen.....now that I know I can replace the 'tail' on the injector without fuss, I might treat the rangie to a new fuel pump instead. With a new (quiet) pump, it should behave itself, and I can return the wiring back to what it was.

  7. #7
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    Of course, you'll head down the VN/VP Commodore pump route, won't you?

    Pete
    Dizzie, 08 D3 TDV6 SE

  8. #8
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    Langy,

    Yes this is a common issue with Jag V12's, caused a few engine fires too

    Easily repaired by the aforementioned methods/ links.

    JC
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈

  9. #9
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    For others, I found this

    EFI Hose Connections

    most illuminating

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