Spark plug electrode broke off

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Viewing 15 posts - 1 through 15 (of 16 total)
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  • #173681

    Olaf Williams
    Participant

    South Africa

    Posts: 11

    Hi Guys,

     

    Yesterday got CheckEngineLight and car had a slight rough idle. Checked the spark plugs the one that had a broken electrode look really odd, see picture.

     

    Replaced the plugs with OEM and car is pulling strong again, should I be concerned about the piece that broke off? Im hoping that it just went out the exhaust valve and is sitting in the cat.

     

    Any feedback would be appreciated.

     

    Regards,

    #173684

    nicklulu
    Participant

    USA

    Posts: 1573

    I would had a borescope and checked the cylinder before replacing the spark plug.

     

    #173688

    71-bda
    Participant

    UK - England

    Posts: 8169

    are you running a tune ??



    No nothing.

    No Mods. No rockers. Just a chunky knob, thats now been replaced by an RS knob innit.

    No tackiness.

    Std as Ford intended, but with a space saver wheel and jack and nuts and wheel brace. oh.. and flaps, a man has got to have flaps.

    Innit?

     

    #173715

    Olaf Williams
    Participant

    South Africa

    Posts: 11

    Stage 1 Revo Tune with 100% stock hardware

    #173716

    71-bda
    Participant

    UK - England

    Posts: 8169

    are you running low octane fuel?? If the other 3 plugs were showing signs of overheating/melting etc I’d be worried that you are on the cusp of LSPI !! but as the other plug appears to be ok, its possibly just a faulty spark plug , are you running std heat range plugs? maybe one stage colder might suit?



    No nothing.

    No Mods. No rockers. Just a chunky knob, thats now been replaced by an RS knob innit.

    No tackiness.

    Std as Ford intended, but with a space saver wheel and jack and nuts and wheel brace. oh.. and flaps, a man has got to have flaps.

    Innit?

     

    #173717

    Olaf Williams
    Participant

    South Africa

    Posts: 11

    Just to add, its a 2016 plate with only 43000 kms (27 000 miles) on the clock.  Plugs have never been changed

    #173720

    Olaf Williams
    Participant

    South Africa

    Posts: 11

    @71-bda

    Just using normal shitty South African pump fuel (E95 unleaded). Im no expert in reading these plugs, but the centre electrode of the faulty is clearly larger than the one next to it (I wonder why)

     

     

     

    #173722

    nicklulu
    Participant

    USA

    Posts: 1573

    Are they the same part number on the plugs?

    Have you checked cylinder where the faulty plug was from?

     

     

     

     

    #173724

    Olaf Williams
    Participant

    South Africa

    Posts: 11

    @nicklulu

    Same part number yes. Didn’t have the tools at the time to check to check the cylinder. Figured that its a really small piece so I took my chances. The car is running extremely smoothly at the moment 

    #173725

    71-bda
    Participant

    UK - England

    Posts: 8169

    I think you may find that the porcelain insulator has ‘slipped’ down? have you tried tapping/pushing it back up into the metal body?



    No nothing.

    No Mods. No rockers. Just a chunky knob, thats now been replaced by an RS knob innit.

    No tackiness.

    Std as Ford intended, but with a space saver wheel and jack and nuts and wheel brace. oh.. and flaps, a man has got to have flaps.

    Innit?

     

    #173819

    Nateodog
    Participant

    UK - England

    Posts: 957

    Don’t worry that is fine you have been very lucky

     

    and he electrode will just fizzle up in the combustion process

    if the ceramic had dropped down Ito the engine is hen that’s a different story as that doesn’t burn and it just gets smashed up inside

     

    change your plugs to one step folder gap them correctly and carry one enjoying it



    SABRE

    584bhp oct booster

    574bhp 99 oct

    507 lbft

    OEMeth installs

    Aquamist

    sabre tuning

    Spec-R

    J9-performance

    funk motorsport

    Hel

    Owen developments

    WP Pro brakes

    HELIX Automotive

    KW suspensions

    Barney Build

    Grant Motorsport

     

    #173839

    white-rs2
    Participant

    UK - England

    Posts: 4605

    Their was an issue with the Denso ITV plugs with the ceramic dropping down and covering the electrode.
    Your picture shows the ceramic much lower or higher on the left plug covering the electrode.



    RS Edition.

    FPM375 Rocks

    The rest of the “M” maps suck

    #173904

    GM
    Participant

    UK - Wales

    Posts: 2836

    The ceramic has dropped but there is a bit of the ground missing

    #173980

    Nateodog
    Participant

    UK - England

    Posts: 957

    Yes none of that matters really as the ceramic hasn’t dropped into the cylinder as stated very lucky

     

    mine dropped into the cylinder with an NGK plug as they are what’s supplied as stock



    SABRE

    584bhp oct booster

    574bhp 99 oct

    507 lbft

    OEMeth installs

    Aquamist

    sabre tuning

    Spec-R

    J9-performance

    funk motorsport

    Hel

    Owen developments

    WP Pro brakes

    HELIX Automotive

    KW suspensions

    Barney Build

    Grant Motorsport

     

    #173982

    Nateodog
    Participant

    UK - England

    Posts: 957



    SABRE

    584bhp oct booster

    574bhp 99 oct

    507 lbft

    OEMeth installs

    Aquamist

    sabre tuning

    Spec-R

    J9-performance

    funk motorsport

    Hel

    Owen developments

    WP Pro brakes

    HELIX Automotive

    KW suspensions

    Barney Build

    Grant Motorsport

     

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