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Thread: 75 S3 2 1/4 Diesel.

  1. #1
    Join Date
    Oct 2014
    Location
    Northern NSW.Australia
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    1,701

    75 S3 2 1/4 Diesel.

    Good morning.
    Picked Up a 75 S3 couple of months ago.
    $300. only bought for what was under the bonnet. A bit rough overall, but that's salt water for you.
    Had mates wanting some parts for there projects, even on mates rates, $1,000 of bits taken off.

    whitehillbilly
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  2. #2
    Join Date
    Oct 2014
    Location
    Northern NSW.Australia
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    It had sat with no fuel filler cap for Years ?????
    I would like to see if as the past owner suggested 'Was Running' to try and run it.
    Drained the fuel tank, 10ltrs of water then 5 plus of Diesel. Took drain plug off Fuel filter under Driver floor pan. Again full of water.
    Removing drain plug on Firewall Fuel filter reveled no water, only diesel.
    Fuel tank has a bit of crud in the bottom. Will remove strainer and give it a clean.
    Guess I should change both filters.
    Something in my head is telling me Diesel engine must have clean fuel.
    So decided to start from the beginning. I just want to run the motor.
    Couple of hrs cleaning fuel tank. Lots of sludge scraped out. I then hosed it out, followed by Heat gun to dry.
    But I forgot to clean the filler tube first, so had to do it all over again.
    Anyway, now all clean. Wont refit the remains of the pick up tube bottom strainer, Cut 5mm off pick up tube to take it off the bottom of the Tank.
    Might leak now........ Fuel gauge sender moved but float half full of diesel. Pin ***** hole to drain. re seal with soldering Iron or Epoxy. Rust cleaned off a bit.
    Next job Fuel Sedimentor. I will pull it out, strip down and clean.

    whitehillbilly
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  3. #3
    Join Date
    Oct 2014
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    Northern NSW.Australia
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    Sedimentor done.
    2 hr job remove, clean, reassemble. Took a while to get apart. Lots of hidden crud.
    Simple idea.

    whitehillbilly
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  4. #4
    Join Date
    Oct 2014
    Location
    Northern NSW.Australia
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    1,701
    Replaced sedimentor and cleaned line to lift pump. Put some brush cutter cord through a few times then carby cleaner.
    Bit of crud came out.
    removed lift pump and gave it a clean. Discovered when I pulled it apart, on of the non return valves had come out. Other a bit loose
    So replace with a new small round gasket. lost original flicking casing to remove cleaner, re center punched both valves.
    Diaphragm a bit 'crunchy' so replaced and re assembled.
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  5. #5
    Join Date
    Oct 2014
    Location
    Northern NSW.Australia
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    Very easy to remove and clean, now.
    Finished and fitted. Time to see if the fuel tank leaks.
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  6. #6
    Join Date
    Oct 2014
    Location
    Northern NSW.Australia
    Posts
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    Well no leaks.
    Inlet to lift pump connected. Pumped 100times and nothing. Pump was off cam as I checked when I fitted.
    Another 100 and nothing, but guess a lot to fill first. Another 20 and I can hear gurgling. Full pressure on pump. Connected out let and removed fuel filter on Bulkhead to clear crud. Few pumps and flowing out filter housing. New Main fuel filter added and to banjo nut undone, as per previous comment and illustrations. another 80 and the filter is full. I then undo 'dissy' pump inlet. Clean small plastic gauze filter, re assemble and pump lift pump till oozing. Nip up banjo and loosen lower Dissy pump bleed screw. pumped till flowing the top bleed screw, nipped up, as per manual.
    The injector 'Rail' had one clear tube the rest towards the front black plastic. Undone the 4 (7/16 ring spanner) then pumped till no bubbles seen in the clear tube. all then nipped up.
    All air should now be out the system ????

  7. #7
    Join Date
    Oct 2014
    Location
    Northern NSW.Australia
    Posts
    1,701
    Connected battery. Air cleaner off, in case I need to pump hot air via heat gun into inlet.
    Tried key in Glow position. No power so nothing to glow plugs.
    Decided to crank motor and 'see' what happens. Nothing.
    Decided to add power from +bat to inlet feed on Ballast resistor via jumper lead.
    Left it on for 20secs or so and smoke appeared, so removed lead, but who knows what on the coil to burn.
    Hand throttle set to idle, with butterfly arm on Dissy pump against top idle stop.
    Turned Key, jump straight into life, full bloody revs.
    In a moment of panic shoved towel into air intake. Didnt stall just dropped revs. Now in real panic........as some advice given not working.
    Turned off key......Nothing. So pulled 'Choke lever' with big handle on Steering column, as I had thought this was a stop lever.
    It all stopped.
    Quick look and thought hand throttle was on full revs so set to other position. Oil filter cleaned, fresh oil and refitted.
    20sec glow with jumper lead and jumped into life first hit of the key to a nice smooth idle...... Rad looked like it was 'peeing' so fitted hose with dribble feed going in.
    Revved quite well but a slight miss up the rev range, but idles lovely. Time for degrease and oil change.
    Will give it another run tomorrow.

  8. #8
    Join Date
    Oct 2014
    Location
    Northern NSW.Australia
    Posts
    1,701
    Pick up a oil filter from Repco and gave it an oil change.
    Plus picked up some injector cleaner, and popped it in the fuel tank.
    Started up and allowed to run for a bit in various hand throttle positions. Bit of blue smoke, but it probably hasn't run for years, so not to worried about rings or valve stem seals at the moment.
    Seems to rev through the range better now and less smoke.
    After finishing my 80inch, plan to make up a S2 swb 'Bush Basher' that I can bend and break.
    Not something I'm keep to do with Gilbert, my daily or the 80inch.

    whitehillbilly

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