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Unread 05-20-2012, 05:56 PM   #1
CJ51973
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Fouled Plugs

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

img_0361.jpg   img_0362.jpg   img_0363.jpg  
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Unread 05-20-2012, 06:26 PM   #2
gunshw301
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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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Unread 05-21-2012, 08:48 AM   #3
CJ51973
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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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Unread 05-21-2012, 08:53 AM   #4
USMCBuckWild
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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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Unread 05-21-2012, 09:26 AM   #5
CJ51973
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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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Unread 05-21-2012, 01:00 PM   #6
USMCBuckWild
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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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Unread 06-03-2012, 04:34 PM   #7
CJ51973
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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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Unread 06-03-2012, 05:53 PM   #8
4.7stroker
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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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