work this out-----16v running issues

  1. #1
    2001 (3 plug) 16v
    has second lamda fault (its missing but has been for about 6 months)

    car runs ok when cold no issues at all when its warm its fine too apart from not revving past 3750 rpm

    Everything else is fine
    Its had recently
    New front lamda
    New crank sensor
    New map sensor
    And the inlet stripped and cleaned and re sealed

    Any ideas on whats gone on??
  2. #2
    either the tps is doing some weird shit or iirc 3 plug ecus don't they have a tendancy of shitting themselves?
  3. #3
    was it a converted car? as most seem to have issues ith unlocked or converted 3 plug ecu's these days.....
  4. #4
    Im sure Alex wont mind me answering lol


    Quote:
    Originally Posted by Sophia_Bush View Post
    either the tps is doing some weird shit or iirc 3 plug ecus don't they have a tendancy of shitting themselves?
    They do sometimes, but I'm sure alex has already tried swappin the Ecu to try that as he asked me to do diagnostics afterwards, but if the Ecu has died It doesn't always allow you to do diagnostics, well mine never anyway an mine was single plug too lol. It kept kickin me out of the system

    Quote:
    Originally Posted by blackie_2k5 View Post
    was it a converted car? as most seem to have issues ith unlocked or converted 3 plug ecu's these days.....
    The car is a 51 plate so is a standard 3plug and as alex said diagnostics keep showing as clear


    Oh just a thought alex, have you tried the fuel relay under Ecu? Mine caused me loads of hassle if you remember as we thought it was the lambda or crank sensor at first.
  5. #5
    Its not converted but ecu is unlocked

    Chris that relay tend to lead to it just cutting out on 3 pluggers like leas did
    im really baffled and now pissed off with it tbh
  6. #6
    has your backbox shat itself? my poor old ka (bless its cotton socks) couldnt rev past 2k due to a fucked backbox
  7. #7
    I dont think theres a blockage in the exhsust gas is coming out as normally does can feel the pressure from it

    Its less than 6 months old aswell still
  8. #8
    Probably a long shot, but new plugs and fuel filter might be worth a try.

    Someone I know had similar problems and it turned out the ECU was at fault.
  9. #9
    Thinking it could be ecu tbh
  10. #10
    Edited first post as i forgot some info lol

    Todays mission
    New fuel filter
    New plugs
    New coilpack
    And im going to try no airbox incase thats blocked somehow
  11. #11
    sounds like a typical 3 plug gayness

    But try what plum said as well just disconnect at the manifold/exhaust and see what happens mate
  12. #12
    Id be deaf is what would happen waiting for it to warm up then trying to rev past 4k with just a btb wont be quiet lol
  13. #13
    Got a few pics to upload prety sure its not an electrical problem the cylenders are full of oil all 4 spark plugs are coated and the coilpack is on cylender 4 where oils got past the plug
  14. #14
    all 4 plugs look like this...

  15. #15
    so the tips came out caped in oil?
  16. #16
    Head gasket?or leaking from the covers getting in somehow.
    No sign of this oil when running?
  17. #17
    Quote:
    Originally Posted by adsayer View Post
    so the tips came out caped in oil?
    exactly how it came out is how you see it even the coilpack is full of it which i really dont understand

    Quote:
    Originally Posted by adzvtr View Post
    Head gasket?or leaking from the covers getting in somehow.
    No sign of this oil when running?
    thinking piston rings its done 120k now and head was rebuilt at 90 i have recipts for allsorts including 16 new valves
  18. #18
    and oil around the coil pack or in the coil pack (the long rubber bits)? man that's weird.

    Check the dipstick, run the engine for a bit and have a look around the cam ladders and the coilpack for any leakage. Check the colour of the exhaust smoke, any bluish and you're burning oil.
  19. #19
    If rings are gone. Ur oil pressure will be high. How bad was the oil in the intake.
    When my rings had gone i was filling an oil catch tank within 5 mins.
    Could be the cause making it find a way out by the coil pack.
  20. #20
    Quote:
    Originally Posted by adsayer View Post
    and oil around the coil pack or in the coil pack (the long rubber bits)? man that's weird.

    Check the dipstick, run the engine for a bit and have a look around the cam ladders and the coilpack for any leakage. Check the colour of the exhaust smoke, any bluish and you're burning oil.
    It smokes white on starts but that clears no leaking from ladders there all still clean it had a head rebuild 30k ago

    Quote:
    Originally Posted by adzvtr View Post
    If rings are gone. Ur oil pressure will be high. How bad was the oil in the intake.
    When my rings had gone i was filling an oil catch tank within 5 mins.
    Could be the cause making it find a way out by the coil pack.
    mine does breath but not to extremes probably a few mm in my catch tank after a week or so

    Very confused tbh
  21. #21
    when you say it doesn't rev how do you mean, does it missfire/backfire.. or just not pickup etc?

    The oil around the coilpack is more often than not leaking cam cover seals, not related to this issue.

    I know this is a long shot but.. do you have access to an oscilloscope?
  22. #22
    Cam covers arent leaking ill show a video of it revving



    But the actual cylenders are oily if you shine a torch inside
  23. #23
    So the cam covers, ladders etc. are all sealed? Is there any way they could be leaking into the spark plug holes?

    I've seen a coil pack and plugs with that much oil on before, a leaky cam cover was to blame. The engine ran fine, strangely.
  24. #24
    I had a vauxhall omega for a bit, that used to leak from the cam covers too. The sparkplugs were fully submerged in oil . Still ran alright though
  25. #25
    how many times

    THE CAM COVERS/LADDERS DO NOT LEAK

    Dont matter anyway now as i may have purchased something to solve the issue in the way of a jp4
  26. #26
    I never said they did, I was just commenting that it can still work fine even if there is oil on the outside of the plugs.

    It sounds electrical to me anyway so im not sure if an jp4 will fix it. Cant harm in trying it though
  27. #27
    Im thinking its blow by on the rings and letting oil up personally ill get a compression tester on it but im thinking jp4 i havent actually bought it yet though
  28. #28
    Could be, i would expect alot of crank case pressure if that was the case though?
  29. #29
    Id have thought that too its an odd one but as said it doesnt matter anymore lol
    This engine has been a bit tempremental for the last few months and then this i was thinking getting a low mileage engine just to bide me over till i have funds for my 180bhp build so ill just do that
  30. #30
    You have checked that the butterfly is opening fully havent you..
  31. #31
    Ill ignore that
  32. #32
    have you checked the cam covers aint leaking Alex?
  33. #33
    Hmmm you did have an epic cam cover leak a while didnt you, however any remains that weren't mopped up at the time would only be on the top of the plugs.

    From the pic though as Alex suspects its clear that the threaded bits covered in oil aswel, oil wouldnt have got past the seals to have covered the thread so its gotta be an internal issue to have covered the threads too.

    JP4's are shit, a rebuild of the existing engine probably wont be much more expensive (depending where you have it done) than it would to buy an uber low milage JP4 and at least you know the condition of it then will be spot on for the better things to come when theyre fitted
  34. #34
    I know the jp4 im lookingto buy matt and the leak before was the breather as my cam cover was missing a baffle i cleaned it all up when i did the thermostat housing the other week
  35. #35
    Ive just stumbled upon a post made by someone else that may suggest where you're going with this (you crafty git)

    In which case you can be forgiven, I shall edit my opinion accordingly in that standard JP4's are shit

    I dare say you'll confirm later this evening when you're at the raj
  36. #36
    I have no idea what your on about matthew
  37. #37
    Something stuck underneath the accelerator pedal?
  38. #38
    Quote:
    Originally Posted by FinchysSaxo View Post
    Something stuck underneath the accelerator pedal?
    made me lol