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evo cylinder number 2 problem, need help plz!

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Old Feb 3, 2016, 12:50 AM
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evo cylinder number 2 problem, need help plz!

hi, i have a problem in cyinder number 2 of my car. the spark plug is charcoal black, while other spark plugs are fine, what could be causing the spark plug to go black?

the car is also knocking on idle, i dont know whats causing the issue?

i need all of yours help, thanks.
Old Feb 3, 2016, 02:49 PM
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Injector problem or ring/valve seal damage and oil burning. Could also be the plug isn't firing. Check for bad wires.
Old Feb 3, 2016, 03:00 PM
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Good time for a leak down test.
Old Feb 3, 2016, 06:22 PM
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Originally Posted by barneyb
Injector problem or ring/valve seal damage and oil burning. Could also be the plug isn't firing. Check for bad wires.
What he said. Check the injectors and plug wires. With one cyl burning rich the other three would be lean so the probe would have a stoich reading.
Old Feb 3, 2016, 08:47 PM
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Originally Posted by barneyb
Injector problem or ring/valve seal damage and oil burning. Could also be the plug isn't firing. Check for bad wires.
thankyou for your reply, yes i will check all of these today and report back.
Old Feb 3, 2016, 08:48 PM
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Originally Posted by LCS
What he said. Check the injectors and plug wires. With one cyl burning rich the other three would be lean so the probe would have a stoich reading.
yes i will do that, thanks.
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