coolant leak

Discussion in 'Technical' started by Hidds, Oct 27, 2011.

  1. Hidds

    Hidds THAT annoying guy....

    hey guys

    well my Z has been off the road for 2 months, varying issues... now most of these have been fixed BUT

    I have a coolant leak at the rear of the engine, up near the firewall, under what I believe to be the heater hoses, i was driving it last night and finally saw the water pissing out of there, now im planning on changing these hoses.
    But if its not them, what is directly under the hoses?
  2. zedboy

    zedboy Active Member

    Have you done an under plennum water by-pass, if yes then it would be your heater core hoses.

    There are no other water hoses up the back on a n/a. Or it could be your water pipes though I doubt that.

  3. Hidds

    Hidds THAT annoying guy....

    no bypass done, Mitch was telling me to do one, and that my alleviate the issue at hand
  4. zedboy

    zedboy Active Member

    Well go to it ;) Should get it done it 15-20 minutes or so :D

  5. Hidds

    Hidds THAT annoying guy....

    lol wouldnt know where to begin, and the guides make me quite confused!

    able to give me a hand ?
  6. Mitch

    Mitch Has one gear: GO

    Stop being a gimp and start turning spanners. You work as an auto dismantler for christ's sake :p

    Here is what to do off the top of my head:

    1. disconnect battery
    2. Remove centre panel off top of plenum
    3. undo accellerator cables
    4. remove balance pipe
    5. pull 6x coil pack connectors and coil packs
    6. remove intake pipes from throttles
    7. undo bolts holding EGR intake pipes on.
    8. undo injector connectors
    9. Pull wiring loom out of way, use windscreen wiper to hold it away
    10. undo the fuel lines, dampers etc. Catch spilled fuel with a rag
    11. undo spring clamps on PCV valves. wiggle loose if possible.
    12. undo Idle control air hoses on the back of the plenum,
    13. disconnect DET sensor
    14. undo the plenum bolts incrementally from the inside out in a few steps to prevent warpage.
    15. disconnect anything else you see that might be connected
    17. remove plenum, stuff old socks or something into the intakes to prevent crap falling in there
    18. BYPASS coolant hoses on the engine block side, as per tech articles
    19. cut / snip / hammer all remaining old coolant hoses off your plenum. Cut / file old elbows off the throttle bodies for neatness' sake.
    20. Installation is the reverse order.
    21. Crack a beer. You've successfully completed a 3hr plenum pull project
  7. Hidds

    Hidds THAT annoying guy....

    i am keen to do this BUT...

    if im doing a plenum pull, im gonna do all the deletes as well, to save more future headaches, thats why i would want someone with previous experience to be there while i clamber around my engine bay
  8. rob260

    rob260 Administrator Staff Member

  9. zedboy

    zedboy Active Member

    It really is straight forward, I did Mikes and fitted his extractors which he bought from me lol. Maybe have a chat with him for some help, I'd help though busy with uni and a TT conversion.

  10. Mikey5555

    Mikey5555 Grid Runner

    I was Matt's padowan learner for two days :p

    Give me two weeks till I'm done with uni too, and ill come over, its pretty straight forward like when I did your plugs for you, just a few more things

    Actually you come to mine, ive got alot of tools and a proper garage :)
  11. Hidds

    Hidds THAT annoying guy....

    what in 2 weeks? lol
  12. BIGRED

    BIGRED 90 z32 TT geko

    What about welsh plugs?????

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