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Thread: Td5 Custom fuel setup

  1. 9th March 2014, 12:54 PM #1
    Fez01's Avatar
    Fez01
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    Td5 Custom fuel setup

    Okay hi again guys so the d2 is giving me some grief atm so im here to get some opinions.

    So I broke down yesterday found out what the squealing noise from the passenger side of the engine Bay was, metal filings everywhere and a pulley under the ac compressor seized and bent didnt damage belt somehow! So ive got a nused one from wreckers to get me outta strife but apart from the bearings going cactus and tension of the belt does anyone know if anything else causes these too go as im gonna order a brand newy off the net comes with a belt and all but yeah.

    Secondly the fuel side so while I was mucking around ive noticed my pressure regulator is leaking diesel again so after buying the rebuild kit last time im thinking of a more permanent fix. My plan is to **** off the regulator all together and tap a thread into the block where the little oring and filter is I then will bring the pump line to an inline mini filter then to a aftermarket 4 bar regulator, the other side of the regulator will go to the tapped port on the inlet of the block, then the return from the front can go straight to the cooler and will have to t join in with the overflow/return of the regulator what do yas think
    Ill post some photos which will explain better whhat im planning but do we need the regulator what if I was just to go through a filter and guage and straight to the block? The regulator only restricts the pressure on the td5 aye keeps at 4 bar can the internals inside the head not handle the pressure of the pump or?
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  2. 9th March 2014, 10:19 PM #2
    justfishing Guest
    Hello,
    I had thought about the same thing a few times almost tapped the hole when I had the head off.
    Ian
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  3. 10th March 2014, 12:12 AM #3
    Tombie Guest
    Most external regulators are just the same unit in an external housing...

    And, Yes, you do need a regulator!

    You'll still need one, and you could tap the head for inlet and return and plumb an external unit in...
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  4. 10th March 2014, 09:16 AM #4
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    Fez01
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    Okay so I need the regulator bugger so what the fuel rail or channels inside the head can't handle the direct pump pressure or the injectors cant?
    Only because a couple of guys I know dont have em in their petrol motors and no worries their?
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  5. 10th March 2014, 07:12 PM #5
    Tombie Guest
    Any injected motor needs regulated fuel pressure so the engine can proportion the correct fuel amount...

    Running an EFI petrol motor without a regulator simply means their vehicles have no chance of
    Controlling fuel air ratio correctly.
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  6. 10th March 2014, 11:56 PM #6
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    Fez01
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    Fair enough, so on the td5 what external regulator would u suggest to be using im looking at some aeromotive and bbk one adjustable however I believe that the td5 needs 4 bar to the injectors so?
    ive got the plumbing side sorted except for where the regulator should go as in b4 the head inlet or after between that and the cooler? From what ive gathered it needs to be between the outlet and fuel cooler. And lastly because its diesel the vacuum reference isnt connected so theres no control over the regulator so I would assume it acts only to restrict or reduce the pressure from the pump?
    Would u recommend getting a reference from the alternator to booster vacuum?
    Sorry for all the questions I will however do all full write up with phots once ive sorted it. Might even try to put a kit together.
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  7. 11th March 2014, 07:46 AM #7
    Shackleton
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    Out of interest mate, did your rebuild kit have a new reg included or just the gaskets/o-rings? And where is it leaking from now?

    Would be great if you did the leg work on a working 'offboard' reg. setup!
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  8. 11th March 2014, 08:38 AM #8
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    Seal kit and new reg, I dunno didnt have a good look its in worst spot but I got diesel on the floor over the starter and trans, came outta hole in reg last time. yeah ill probs order the parts this week and hopefully tap the bl8ck soon. Ill set it all out off car but not working till installed.
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  9. 11th March 2014, 10:41 AM #9
    Tombie Guest
    Good luck, however sounds like you're just adding further complexity to a simple system.

    Your leak is likely one of the following:

    Gauze filter not in place correctly when refitting.
    Gasket not aligned properly or damaged.
    Insufficient even torque on block
    Or... Poor replacement module and it's failed.
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