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Thread: BIO-Fuel stuffing things up

  1. #1
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    BIO-Fuel stuffing things up

    Just had a roadworthy done today on my 95-Disco-TDi300 and have been told my Fuel Injector Pump has started to leak and will probably either need replacing or reconditioning - Then after visiting a local diesel specialist for more information they gleefully informed me that without even looking this was `more than likely` because ALL older diesel engines are no longer compatible with the new fuel available the pumps Which means that all owners of any pre-95 diesels can now look forward to MASSIVE repair bills to anything fuel related - Needless to say I was less than impressed with this depressing bit of news but not as mortified as I was with the estimate of "Up-To $2200.00"!!! to rebuild a Bosch FIP

    The following search seem to confirm this bad news too...
    Diesel Bob Tuning - Diesel Forever?

    Plus this thread from the same site may also be interesting to anyone else who is remotely interested
    Diesel Bob Tuning - Diesel Fuel


  2. #2
    85 county is offline AULRO Holiday Reward Points Winner!
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    Quote Originally Posted by Druid 66 View Post
    Just had a roadworthy done today on my 95-Disco-TDi300 and have been told my Fuel Injector Pump has started to leak and will probably either need replacing or reconditioning - Then after visiting a local diesel specialist for more information they gleefully informed me that without even looking this was `more than likely` because ALL older diesel engines are no longer compatible with the new fuel available the pumps Which means that all owners of any pre-95 diesels can now look forward to MASSIVE repair bills to anything fuel related - Needless to say I was less than impressed with this depressing bit of news but not as mortified as I was with the estimate of "Up-To $2200.00"!!! to rebuild a Bosch FIP

    The following search seem to confirm this bad news too...
    Diesel Bob Tuning - Diesel Forever?

    Plus this thread from the same site may also be interesting to anyone else who is remotely interested
    Diesel Bob Tuning - Diesel Fuel

    well that will be news to many, and sounds like a load of rubbish.

    so is it your injector pump or lift pump thats leeking. last lift pump i got from TRS was about 200 bucks.

  3. #3
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    Not a load of rubbish.
    The article link is for the UK and not Aust.
    Low sulphur diesel goes though a acid treatment to remove the sulphur in the fuel and other things.
    The treatment removes most of the lubrication effects of the diesel fuel.
    Rotary diesel injection pumps........CAV...DPA..........Bosch VE were designed to be lubricated by the fuel its self.
    These injection pumps suffer.
    Older inline pumps use oil for most of their lubrication. and are less affected as are new common rail computer controlled systems as they are designed for the new diesel fuels.
    The rotary pumps tend to need the input gear shaft seal replaced from standard to newer designed replacement ones made from better materials as is the case for throttle input shaft seal........but is not the complete answer.
    I am going to stir up a can of worms.........personally I find a small amount of Two stroke oil added to the diesel fuel helps the rotary pump injection pumps greatly.

  4. #4
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    Stir away - This sort of thing deserves a Class-Action I say - After-all it`s the little guy with an older vehicle who gets hit here

    No 85 it`s the exxie FIP we`re talking about here not a 50 buck lift-pump pay-pal`d off ebay

    BTW My own mechanic, the roadworthy-garage AND the diesel-specialist did say that it could affect ANY component in an older fuel system with rubber or moving parts - Including Injectors, Lift-pumps and connecting hoses

    I`m thinking of going with the adding mineral oil thing too before it stuffs anything else up?!

  5. #5
    Tombie Guest
    The 2 stroke will add the lubrication, but the elastomer aren't always designed for (or compatible with) the chemicals/properties in the fuel as this changes.

    Using known quality brand fuels with the additive packages that some manufacturers put into it makes a big difference.

    As for a class action... Please... If we all sat back holding onto old technology we would never progress... Some things will change, things will become obsolete or need upgrading to continue to function.

    Yes, this is unfortunate, and can be pricey... So I understand in the case of your pump that it hurts.

    The mechanic may be correct - but then again, how olds the pump since its last overhaul? It could just be age has finally got to it.

    But, avoid supermarket fuel supplies, and yes - In older mechanical diesels, I agree a shot of 2 stroke isn't a bad thing.

  6. #6
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    Went through the same scenario some time ago,with leaks from the spindle and top cover gasket on my 300tdi injector pump.When I mentioned vehicle was 1995 manufacture,local diesel mob recommended complete overhaul of pump[at great expense].I replaced spindle and seals for about $25,no further leaks.The procedure is well covered on Aulro and LR4x4 sites,pretty straight forward, just make sure you are meticulously clean and put things back as they originally were.

  7. #7
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    Thanks for the replies so far

    Went back to the diesel-joint to grab some new 4mm fuel pipe today for my TDi200 Deffa and I mentioned the mineral oil idea to the guy on the counter - He did`nt disagree that adding some engine-oil or a splash of two-stroke `might` help with lubrication but almost fell over himself to add that "it won`t stop the original seals being attacked by the new fuel though!"

    So with this joyful prediction in mind and moi being understandably reluctant at chucking over 2K at a mechanically-operated fuel-pump on a 4K-Car - I think I might have to have a look at the loin-girding links that eddy has most kindly mentioned

    Does anyone remember a particularly good thread on the subject??

  8. #8
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    sounds like a cods load of bull to me...

    theres plenty of examples of diesels being run on

    Avtur
    JP 5,6,7,8
    kero

    I run mine on anything that can be made to get liquid enough to inject and burn without predetonation (petrol) although I have on occasion added petrol to a particulalry contaminanted mix of bad vege oil to get it to run.

    its not particualarly difficult to do the top seals on the IP nor is it hard to do the distributor head seal, theres even a method of being able to do it without pulling the unit apart by using some longer bolts and just sliding the seal over the top after you cut the old one away.

    once the shaft seal begins to leak into the timing housing, you just set yourself up to do a timing belt change, pull the IP out and send it off to have a minimum parts change and reseal. should cost you no more than $500 if everything is in good order and not more than $1000 unless you have damaged the housing or busted up the springs or other not normaly wearing parts.

    hell if you need to borrow one to send off for a refit let me know I have 3 spares now that just sit there waiting for one of mine to play up, I send one off get it resealed and sorted (or order in a kit and do it myself depending on time available) then just swap it in when it gets back.

    the ULSD fuel is the one that will give you problems and it will dry the seals out and ULSD isnt bio, thats traditional Dino diesel thats been over refined to get rid of things to keep the greenies happy and the refineries because now they get to charge the earth for what is now a "produced product" rather than a byproduct of producing petrol.
    Dave

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  9. #9
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    Quite right it`s the Ultra Low Sulfur Tack that seems to give the problems NOT the Bio my mistake - SOoo forgive my ignorance but am I right in saying that the ULSD version can be avoided then?! - I mean everybody knows that petrol comes in different grades at the pumps but I thought that diesel was diesel and we oilers just had to chuck in whatever the bloke dropped off in the tanker

    More frantic debate here on the subject BTW http://www.freel2.com/forum/topic878.html?highlight=oil

  10. #10
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    Druid
    Out of interest
    Just which seal is leaking?

    If it is the stem seal (where the throttle is attached) - this likely has nothing to do with monkey juice and is more just an age time thing. Very simple to replace the o-rings and seal it up.
    Sure make yourself feel better by using viton seals but I wouldn't be rushing a pump to a dieso specialist for a stem seal leak.

    S

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