Question about Ford F 450 Super Duty

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Recently replaced spark plugs & now the engine's chugging

I recently had my spark plugs replaced with new cryogenic spark plugs. Now my RV is chugging and I'm not sure what to check. Could the ne wplugs cause this? Help please! The dropdown menu doesn't list rvs, so I entered F 450 Super Duty

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The vehicle listed should not make any difference.it is possible you have wrong plugs if you did not use the proper engine size and or code.

Posted on Apr 19, 2009

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