#2 spark plug keeps fouling.(soot on plug not oil)

MAZDA TRUCK
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DSMITHRSZ28
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1993 mazda b2200 truck 4 cylinder with carb. 5 speed manuel. about 150000 miles. #2 spark plug keeps fouling with soot not oil. compression test was #1 120 psi, #2 120 psi, #3 90 psi, #4 100 psi. does not appear to be flooding other cylinders are not fouling. engine probaly needs a rebuild, but i would like to find out what is causing this before i do. check engine light has been on since i had this truck, 2years. thanks
Aug 24, 2007 at 10:43 PM
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RASMATAZ
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[quote:e2358a8d99="dsmithrsz28"]1993 mazda b2200 truck 4 cylinder with carb. 5 speed manuel. about 150000 miles. #2 spark plug keeps fouling with soot not oil. compression test was #1 120 psi, #2 120 psi, #3 90 psi, #4 100 psi. does not appear to be flooding other cylinders are not fouling. engine probaly needs a rebuild, but i would like to find out what is causing this before i do. check engine light has been on since i had this truck, 2years. thanks[/quote:e2358a8d99]

Could be the heat range/bad wire creating a weak spark-
Aug 25, 2007 at 5:29 AM
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