Spark plug problem

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06rickyd
Posts: 1
Joined: Mon Mar 07, 2011 9:56 am
Car: 1993 240 sx

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I have a problem with one of my spark plugs it keeps fouling out everytime i replace it what could be causing the one plug to be fouling out?

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s13sickboi
Posts: 394
Joined: Sat May 08, 2010 1:50 pm
Car: 1997 Nissan Hardbody XE
Location: DFW TX ftw

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Lot of things, check compression in that cylinder and you may find out it has low compression.

Or the plug might not be firing, grab a timing light and check that!
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sly240
Posts: 106
Joined: Tue Feb 22, 2011 3:44 pm
Car: 93 240sx

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make sure the fuel injector is firing on that cylinder if it is sticking it can be running rich and fouling it out.
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ShouldaHadaV8
Posts: 365
Joined: Sat Oct 10, 2009 7:00 pm
Car: 92 hatchback 240sx, j30 diff, TIEN tie-rods
Location: N. FLA

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Could be bad valve, or seal. Deffinetely check compression, its good to know regardless
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