Engines

Engines, fueling and tuning

  1. 8-valve

    Section for all 8-valve engines
    Discussions:
    3,975
    Messages:
    37,334
    Latest: white oil pressure switch part number references 1.6 bar Jwoodhe1, Jul 18, 2025 at 5:39 PM

  2. 16-valve

    Section for all things related to 16-valve engines
    Discussions:
    4,936
    Messages:
    61,711
    Latest: 16V ABF engine - very high emissions! Peffa, Jul 10, 2025

  3. 1.8 & 1.8T

    Section for all things related to the 20-valve 4 cyl engine
    Discussions:
    2,784
    Messages:
    26,384
    Latest: Open Circuits eddiedebo, Jul 16, 2025 at 8:09 AM

  4. VR5, VR6 & Wx

    Section for all things related to the VR6 & V6 engines
    Discussions:
    1,248
    Messages:
    10,867
    Latest: Mk2 12v VR6 Intake Piping JVNotts, Jul 15, 2025 at 3:09 PM

  5. FSI (inc. GTI 2.0T)

    Section for all things related to the new breed engines (EA888, EA113, FSI, TSI, TFSI - call them what you will)
    Discussions:
    149
    Messages:
    1,285
    Latest: FSI/TFSI into a mk2, best mounting solution? Toyotec, Jun 20, 2025

  6. Diesel

    Section for all things related to diesel engines
    Discussions:
    791
    Messages:
    6,816
    Latest: 1Z 1.9 tdi pump timing issue danster, Jun 29, 2025
Page 1 of 1120
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Title Start Date
Replies Views
Last Message ↓
  1. rubjonny
    Sticky

    OEM MK4 management wiring => Mk1/2/3 harness install FAQ (Now with added dieselness!)

    rubjonny, Nov 8, 2013 ... 48 49 50
    Replies:
    981
    Views:
    496,267
    rubjonny
    Jun 17, 2025
  2. Toyotec
    Sticky

    Fuel pumps and flow capablity

    Toyotec, Apr 14, 2011
    Replies:
    9
    Views:
    8,045
    Dave
    Jul 3, 2024
  3. davkav
    Sticky

    Idle Stabilisation Valve (ISV) teardown

    davkav, Apr 17, 2018
    Replies:
    10
    Views:
    1,572
    xav
    Oct 9, 2022
  4. A.N. OTHER
    Sticky

    4 cylinder bore & stroke combinations + max bore & stroke list

    A.N. Other, Jan 20, 2011 ... 2 3
    Replies:
    43
    Views:
    51,558
    HPR
    Jun 11, 2020
  5. A.N. OTHER
    Sticky

    Technical Engine Performance Discussions Index

    A.N. Other, Nov 27, 2013
    Replies:
    0
    Views:
    3,347
    A.N. Other
    Nov 27, 2013
  6. A.N. OTHER
    Sticky

    The GTI Engine and its humble origins

    A.N. Other, Sep 28, 2010
    Replies:
    13
    Views:
    13,202
    A.N. Other
    Sep 30, 2010
  7. VW_SINGH
    Sticky

    Mk1 Golf - Fuel starvation on right hand bends.Analysis and conclusion

    vw_singh, Jun 30, 2009
    Replies:
    15
    Views:
    17,694
    vw_singh
    Jul 3, 2009
  8. CRISPY 8V
    Locked Sticky

    VAG COM Users in FAQ

    Crispy 8V, Jun 27, 2006
    Replies:
    0
    Views:
    11,634
    Crispy 8V
    Jun 27, 2006
  9. NI MK2 GTI 8V

    mk2 digifant setup

    NI MK2 GTI 8V, Jul 8, 2007
    Replies:
    13
    Views:
    1,375
    Darren Smith
    May 12, 2025
  10. LEAVETHISPLANET

    Help - Reference for Catalyst required for a Clubsport

    leavethisplanet, Jan 29, 2025
    Replies:
    0
    Views:
    103
    leavethisplanet
    Jan 29, 2025
  11. GER16V

    new old stock 9a pistons

    ger16v, Nov 23, 2024
    Replies:
    9
    Views:
    463
    HPR
    Dec 7, 2024
  12. KRISTIANBG

    ABF engine(in mk2) lambda sensor

    KristianBG, Nov 1, 2020
    Replies:
    10
    Views:
    763
    KristianBG
    Oct 16, 2024
  13. Gazzmondo

    Anyone bought a Gravity stainless exhaust?

    Gazzmondo, Sep 24, 2024 ... 2
    Replies:
    31
    Views:
    1,416
    jmsheahan
    Oct 2, 2024
  14. BLACK-MK2-GTI

    Help...smokey Mk2 Golf syndrome...cure?!

    Black-Mk2-GTI, Mar 8, 2004
    Replies:
    14
    Views:
    2,238
    Darren Smith
    Sep 24, 2024
  15. Rustbuster

    Bouncing oil pressure advise?

    Rustbuster, Sep 5, 2024
    Replies:
    10
    Views:
    324
    Rustbuster
    Sep 8, 2024
  16. DEEPPOLO

    Loom Extension

    deeppolo, Aug 16, 2024
    Replies:
    7
    Views:
    324
    deeppolo
    Aug 28, 2024
  17. Dave

    1.8t 20v Coolant Loss? - Leak Detector Dye - UV Torch

    Dave, Jul 17, 2024
    Replies:
    5
    Views:
    377
    Dave
    Jul 18, 2024
  18. Dave

    COOLANT : GOOD BYE G13 - WELCOME BACK G12

    Dave, Jul 1, 2024
    Replies:
    0
    Views:
    507
    Dave
    Jul 1, 2024
  19. R1CH

    Cambelt tensioner stud - stripped head

    R1ch, Apr 21, 2022 ... 2
    Replies:
    24
    Views:
    2,483
    KeithMac
    Apr 18, 2024
  20. ROBIN MARRIOTT

    Engine choice, a dilemna (mk2 Golf)

    Robin Marriott, Mar 16, 2024
    Replies:
    12
    Views:
    705
    KeithMac
    Mar 19, 2024
  21. Gazzmondo

    MK2 with ABF engine temperature gauge problem.

    Gazzmondo, Feb 28, 2024
    Replies:
    5
    Views:
    445
    Gazzmondo
    Mar 1, 2024
  22. Zender Z20

    Unknown Sensor...

    Zender Z20, Dec 28, 2023 ... 2
    Replies:
    29
    Views:
    1,184
    Zender Z20
    Feb 22, 2024
  23. Rustbuster

    Mk2 GTI 8V (EV engine so K/Jet) timing Q please?

    Rustbuster, Nov 20, 2023 ... 2
    Replies:
    24
    Views:
    1,522
    Zender Z20
    Feb 2, 2024
  24. DAVS

    ecu vacuum pipe - mk2 16v

    Davs, Apr 18, 2004
    Replies:
    16
    Views:
    3,702
    rubjonny
    Jan 2, 2024
  25. rubjonny

    Digifant CO problem

    rubjonny, Sep 9, 2005 ... 2
    Replies:
    29
    Views:
    3,191
    rubjonny
    Nov 6, 2023
  26. Tristan

    16v crank in an 8v?

    Tristan, Oct 2, 2023
    Replies:
    7
    Views:
    610
    TonyB
    Oct 11, 2023
  27. GARYN WILLIAMS

    Throttle pedal conversion not working! HELP!

    Garyn Williams, Oct 1, 2023
    Replies:
    4
    Views:
    467
    Garyn Williams
    Oct 3, 2023
  28. MYKRO

    Stuck spark plug 1.8tsi Mk3 EA888 gen3

    mykro, Oct 1, 2023
    Replies:
    4
    Views:
    470
    daNpy
    Oct 1, 2023
Showing threads 1 to 20 of 22,383

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