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post #1 of 8 Old 05-20-2012, 06:56 PM Thread Starter
CJ51973
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Fouled Plugs

I am fouling plugs pretty quickly. What do these pictures mean to anybody?

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post #2 of 8 Old 05-20-2012, 07:26 PM
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I am no engine expert nor can help with a cause but it looks lean to me. Plug is getting to hot.

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post #3 of 8 Old 05-21-2012, 09:48 AM Thread Starter
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I am running a TFI with 12 volts to the coil. The ignition module is still stock voltage (use old coil (+) to trigger a relay for 12 volt coil voltage). Is this too much for the stock plugs? I bought some $7 each plugs which are warrantied, Autolite Iridium or something like that. Fouled Bosch Platinums and Champion Copper.

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post #4 of 8 Old 05-21-2012, 09:53 AM
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Don't laugh, but best luck I have ever had with plugs were the $.99 Champions or NGKs. I ran them with points as well as an MSD Digital 6 ign and they never failed me.

Check the temperature range the store gave you and ensure they didn't give you 'hotter' plugs.
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post #5 of 8 Old 05-21-2012, 10:26 AM Thread Starter
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This is the second set this has happened to. Temperature wise you are thinking the plugs are runnig too hot so they are burning up? Or I need cooler plugs so they won't make as much heat?

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post #6 of 8 Old 05-21-2012, 02:00 PM
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It looks to me (and I am no expert) that you might want to try cooler plugs. Just 1 step down I think. I know Toyotas and Subarus tend to like 1 step hotter...

Just my $.02
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post #7 of 8 Old 06-03-2012, 05:34 PM Thread Starter
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The wires on the distributor pick up were cooked and one had welded itself to the base of the distributor. I think thi will cure this weird fouling issue.

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post #8 of 8 Old 06-03-2012, 06:53 PM
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That looks like ash on the insulators, running the correct heat range keeps the plugs clean but burning oil leaves behind ash deposits like you are seeing. Are you using oil? What is your compression? Is your PCV system functioning correctly?

Dwayne


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