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Old 01-17-2013, 06:57 AM   #1 (permalink)
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Question EGR valve issues?

I recently changed out out two coil packs (2 & 3) and all the plugs in my 04 3.0 OHV. Gapped new Motorcraft plugs at .045. Now the engine sounds like it has an exhaust problem of some sort. I verified the reassembly of the EGR valve and cannot find anything unusual. Does anyone have any suggestions? Thank you
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Old 01-17-2013, 08:34 AM   #2 (permalink)
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Check for loose vacuum line. You might have knocked one loose by accident when working on plugs and coils. What problem exactly are you having??
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Old 01-17-2013, 08:54 AM   #3 (permalink)
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Default EGR Valve issues

The only I problem I'm having now is sound related. It sounds like I need a new muffler. I cannot find any unconnected vacuum lines. I had heard there is a flexible tube that runs between the exhaust manifold and the catalytic converter. Maybe that's the issue.
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Old 01-17-2013, 10:56 AM   #4 (permalink)
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Which engine do you have? The ohv doesn't have individual coils (cop). The 04 dohc does. Iirc, on the dohc, plugs are to be gapped at .054. I recommend you carefully backtrack your work.

Last edited by sheila; 01-17-2013 at 11:00 AM.
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