Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Please note that it is not permitted to have referral links posted in your signature. Keep these links contained in the appropriate forum. Thank you.

https://www.boards.ie/discussion/2055940817/signature-rules
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

97 megane 1.6 carbon fouling plugs

  • 28-10-2011 10:01pm
    #1
    Tea drinker
    Registered Users, Registered Users 2 Posts: 2,817 ✭✭✭


    My brothers 97 Megane is getting a heavy coating of carbon on the plugs.
    Seems to be driving ok, most of the time. I believe the TDC sensor is a common fault but seems to affect starting rather than normal running.
    Bro complains of it running on 3 cyls sometimes, and when pulls the plugs they are fouled. He changed from some spurios make of plugs to bosch and it's same problem.

    Where to start? Lambda / temperature sensor something else?


Comments

  • #2
    jimgoose
    Registered Users, Registered Users 2 Posts: 20,199 ✭✭✭✭jimgoose


    Hmm - coilpack breaking down? I had that sort of bother a few months back with a Xsara and an S-Type Jag, both '99. I think the ridiculous rain pops them sometimes.


  • #3
    Tea drinker
    Registered Users, Registered Users 2 Posts: 2,817 ✭✭✭Tea drinker


    He replaced both coilpacks in the past 12 months, one for sure was a faulty pack as the fault followed the pack when we swopped them.

    Diagnostic would show the failing sensor or coilpack if he was unlucky enough to have another go?


  • #4
    jimgoose
    Registered Users, Registered Users 2 Posts: 20,199 ✭✭✭✭jimgoose


    Tea drinker wrote: »
    He replaced both coilpacks in the past 12 months, one for sure was a faulty pack as the fault followed the pack when we swopped them.

    Diagnostic would show the failing sensor or coilpack if he was unlucky enough to have another go?

    Diag/fault-code cache should reveal this sort of thing, yes.


  • #5
    Tea drinker
    Registered Users, Registered Users 2 Posts: 2,817 ✭✭✭Tea drinker


    according to diagnostic it's a faulty Lambda. Dealer wants e150, any cheaper places?


  • #6
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    Tea drinker wrote: »
    according to diagnostic it's a faulty Lambda. Dealer wants e150, any cheaper places?


    What fault is it showing exactly, just because there is a misreading lambda on the diagnostic doesn't always mean the lambda is the problem.


  • Advertisement
  • #7
    SouperComputer
    Registered Users, Registered Users 2 Posts: 6,949 ✭✭✭SouperComputer


    Nissan doctor wrote: »
    What fault is it showing exactly, just because there is a misreading lambda on the diagnostic doesn't always mean the lambda is the problem.

    +1 to this. Find out the exact OBD code #.

    Vacuum leak or a MAF issue can cause the ECU to overcompensate and richen things up so bad that you end up fouling plugs.


Advertisement