Sounds like knocking/misfiring ?
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Mountain Pass
Joined: Apr 2003
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From: All over
Sounds like knocking/misfiring ?
Can removal of emission equipment causes the engine to make a knocking or misfiring sound ? It's a '83 F250 with the 460, I had removed the air pump and most of the vacuum lines.
Bert
Bert
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Joined: Sep 2004
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From: midwest
i dont see how unless your hearing spark knock. under what conditions do you here it? hows your oil pressure? i would check the timing and make sure you have no vacuum leaks then see if it still does it.
Senior User
Joined: Aug 2004
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From: Las Vegas, Nevada
Originally Posted by woopud
Can removal of emission equipment causes the engine to make a knocking or misfiring sound ? It's a '83 F250 with the 460, I had removed the air pump and most of the vacuum lines.
Bert
Bert
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