Engines

Engines, fueling and tuning

  1. 8-valve

    Section for all 8-valve engines
    Discussions:
    3,998
    Messages:
    37,561
    Latest: 8v PB not starting after I changed the dash bulbs... rubjonny, Mar 24, 2026

  2. 16-valve

    Section for all things related to 16-valve engines
    Discussions:
    4,961
    Messages:
    61,960
    Latest: Mk2 ABF m. Chasing a miss/hunting issue. rubjonny, Apr 8, 2026 at 4:27 PM

  3. 1.8 & 1.8T

    Section for all things related to the 20-valve 4 cyl engine
    Discussions:
    2,794
    Messages:
    26,451
    Latest: 20v VWM inspired engine build TonyB, Apr 4, 2026 at 9:37 AM

  4. VR5, VR6 & Wx

    Section for all things related to the VR6 & V6 engines
    Discussions:
    1,256
    Messages:
    10,933
    Latest: Starter Motor rubjonny, Mar 27, 2026

  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:
    150
    Messages:
    1,292
    Latest: Mk7 GTI Turbo Problems davidut5, Sep 9, 2025

  6. Diesel

    Section for all things related to diesel engines
    Discussions:
    791
    Messages:
    6,822
    Latest: Smoke after startup in PD Mystic8v, Mar 15, 2026
Page 1 of 1120
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  1. CRISPY 8V
    Locked Sticky

    VAG COM Users in FAQ

    Crispy 8V, Jun 27, 2006
    Replies:
    0
    Views:
    11,731
    Crispy 8V
    Jun 27, 2006
  2. VW_SINGH
    Sticky

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

    vw_singh, Jun 30, 2009
    Replies:
    15
    Views:
    18,192
    vw_singh
    Jul 3, 2009
  3. A.N. OTHER
    Sticky

    The GTI Engine and its humble origins

    A.N. Other, Sep 28, 2010
    Replies:
    13
    Views:
    13,515
    A.N. Other
    Sep 30, 2010
  4. A.N. OTHER
    Sticky

    Technical Engine Performance Discussions Index

    A.N. Other, Nov 27, 2013
    Replies:
    0
    Views:
    3,490
    A.N. Other
    Nov 27, 2013
  5. A.N. OTHER
    Sticky

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

    A.N. Other, Jan 20, 2011 ... 2 3
    Replies:
    43
    Views:
    53,395
    HPR
    Jun 11, 2020
  6. davkav
    Sticky

    Idle Stabilisation Valve (ISV) teardown

    davkav, Apr 17, 2018
    Replies:
    10
    Views:
    1,869
    xav
    Oct 9, 2022
  7. Zender Z20
    Sticky

    Oil Pump Refurb...

    Zender Z20, Jan 15, 2024
    Replies:
    2
    Views:
    577
    Sirguydo
    Jan 20, 2024
  8. Toyotec
    Sticky

    Fuel pumps and flow capablity

    Toyotec, Apr 14, 2011
    Replies:
    9
    Views:
    8,400
    Dave
    Jul 3, 2024
  9. rubjonny
    Sticky

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

    rubjonny, Nov 8, 2013 ... 50 51 52
    Replies:
    1,023
    Views:
    524,732
    Racingnight123@
    Jan 24, 2026
  10. CHRIS

    Mk3 injectors

    Chris, Oct 22, 2003
    Replies:
    1
    Views:
    1,794
    AndrewF
    Oct 22, 2003
  11. FARQUARE

    no idle at start up

    farquare, Oct 22, 2003
    Replies:
    2
    Views:
    1,812
    AndrewF
    Oct 23, 2003
  12. TURTLE

    Engine on 8v advice

    turtle, Oct 22, 2003
    Replies:
    3
    Views:
    1,834
    veedubnutz
    Oct 23, 2003
  13. PAULM

    16v won’t idle

    PaulM, Oct 22, 2003
    Replies:
    3
    Views:
    1,792
    PaulM
    Oct 23, 2003
  14. 1990

    Mk2 vr6 airbox question

    1990, Oct 22, 2003
    Replies:
    7
    Views:
    2,421
    1990
    Oct 23, 2003
  15. SOUTHY_GTI

    I know what would be wicked

    Southy_GTI, Oct 22, 2003
    Replies:
    10
    Views:
    2,090
    Jeff
    Oct 23, 2003
  16. King Kwik

    2.0 tall block engine code

    King Kwik, Oct 22, 2003
    Replies:
    5
    Views:
    1,762
    veedubnutz
    Oct 23, 2003
  17. S1MMA

    Black exhaust tip

    S1MMA, Oct 23, 2003
    Replies:
    11
    Views:
    1,743
    S1MMA
    Oct 23, 2003
  18. TONSK

    G60 Idle/Tickover Speed

    Tonsk, Oct 23, 2003
    Replies:
    4
    Views:
    1,342
    Tonsk
    Oct 23, 2003
  19. MK4 GTI TURBO

    KR Head

    MK4 GTI TURBO, Oct 23, 2003
    Replies:
    2
    Views:
    1,399
    jc..
    Oct 23, 2003
  20. THEBLUEBUS

    Petrol Boost Valves

    thebluebus, Oct 23, 2003
    Replies:
    4
    Views:
    1,290
    thebluebus
    Oct 23, 2003
  21. ANDYKAZ

    Plugs needing a change?

    andykaz, Oct 23, 2003
    Replies:
    2
    Views:
    1,314
    andykaz
    Oct 23, 2003
  22. IAN_S

    ABF into mk2, which way is best?

    Ian_S, Oct 22, 2003
    Replies:
    9
    Views:
    1,786
    jason
    Oct 23, 2003
  23. CRAIGYBABY

    Cut it out

    CraigyBaby, Oct 23, 2003
    Replies:
    5
    Views:
    1,351
    CraigyBaby
    Oct 23, 2003
  24. GOLF_DAV

    mkII golf gti

    golf_dav, Oct 23, 2003
    Replies:
    4
    Views:
    1,420
    harry_the_cake
    Oct 23, 2003
  25. REMUS

    Cheap Ebay "Chips"

    Remus, Oct 22, 2003
    Replies:
    13
    Views:
    1,803
    Golden
    Oct 23, 2003
  26. ALTERN8

    Eaiest Way to remove a16v mk2 golf engine

    altern8, Oct 23, 2003
    Replies:
    7
    Views:
    5,380
    altern8
    Oct 23, 2003
  27. GOLF CABRY

    Mk1 Cabriolet Steering Lock Removal?

    golf cabry, Oct 23, 2003
    Replies:
    3
    Views:
    1,881
    harry_the_cake
    Oct 24, 2003
  28. RAHUL

    which head gasket set? HELP!

    Rahul, Oct 23, 2003
    Replies:
    7
    Views:
    1,428
    harry_the_cake
    Oct 24, 2003
  29. CRISPY 8V

    TDi experts help

    Crispy 8V, Oct 23, 2003
    Replies:
    2
    Views:
    1,349
    Crispy 8V
    Oct 24, 2003
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