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Engine 1zzfe running too rich

Discussion in 'Powertrain' started by jordan18, Feb 25, 2006.

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    jordan18 Guest

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    1zzfe running too rich

    Hi,

    I removed the spark plugs and the tip is like white, i read some site, and they are saying this is due to engine is running too rich. what is wrong?

    thanks
    jordan18, Feb 25, 2006
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    sxlostv1 New Member

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    are you using iridium plugs like you're supposed to?
    sxlostv1, Feb 25, 2006
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    ghoztrider New Member

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    do u have a air intake?
    ghoztrider, Feb 25, 2006
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    jordan18 Guest

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    yep, using iridium plugs, got them from toyota. They ran for about 4000k km and they turned white. No air intake, stock airbox
    jordan18, Feb 26, 2006
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    COROLLA1ZZ New Member

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    it is normal .....if it was running rich it would be black
    COROLLA1ZZ, Feb 26, 2006
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    sxlostv1 New Member

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    from what i know, cars with direct coil ignition systems should always use iridium spark plugs. i think the 98-99 spec 1zz-fe doesn't use direct coil. refer to your owner's manual.
    sxlostv1, Feb 26, 2006
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    dare2drvfast Guest

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    also the car makes the motor run rich to cool it off if you've been hard on it
    dare2drvfast, Feb 26, 2006
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    jox_rolla Guest

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    hey what year is your 1zzfe because im pretty sure that im not runnin iridium plugs but i do have an intake and my tips are black on my 98 1zzfe should i be running iridium plugs
    jox_rolla, Feb 27, 2006
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    shubert_ae102 New Member

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    white plugs are a sign of running to lean , not rich . means youre plug is too hot for the application , ask for a cooler plug . plugs when are wore correctly , have a brownish gray tint . running too lean over a long period of time will effect an engine. with high octane , 9mm wires , cold air and a quick escape , lean cylinders will start scortching pistons.
    shubert_ae102, Feb 27, 2006
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    shubert_ae102 New Member

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    are they sooty black or brownish black? if there brownish black there normal , your fine. if theyre sooty black , then your not getting efficient burn in the cylinder and it can leave greasy lookin deposits on the plug if this is more like it , you need hotter plugs.
    shubert_ae102, Feb 27, 2006
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    shubert_ae102 New Member

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    yes , im not saying not to use them , just if there white get a cooler plug , if cruddy black , get hotter ones.
    shubert_ae102, Feb 27, 2006
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    jordan18 Guest

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    2001 1zzfe with vvti
    jordan18, Feb 27, 2006
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    jordan18 Guest

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    so what can i do to fix this running too lean issue?

    thx
    jordan18, Feb 27, 2006
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    jox_rolla Guest

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    sooty black yeah i will get some iriduim plugs then i have a new tranny on the way as well as a tranny cooler and i'll bee porting my manifold while im waiting on them to get here... so i might as well grab the plugs how bow wires anyone know of a good site that has spark plug wires for a 98 corolla
    jox_rolla, Mar 7, 2006
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