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| Joined: | 09-10-2012 |
| Location: | Little Chute, Wisconsin USA |
| Posts: | 435 |
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| View single post by answerman | |||||||||||||
| Posted: 11-02-2015 08:08 pm |
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answerman
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Maybe too simple of a test, but have you tried swapping a couple of the plugs? Pull #2 and #4 plugs out, swap them, connect the wires back up, and see if you're still getting the misfire on #4. If it's now on #2, it's the plug. If it's still on #4, then it's farther upstream.
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