Engine misfires between 54 and 56 mph

Duane Griffin

New Member
Joined
Sep 30, 2021
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4
Location
Broadway nc
Engine feels like a misfire between 54and 56 mph installed new plugs plug wires distributor cap and rotor button any suggestions would be greatly appreciated
 
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If you are having misfires you'll probably get codes, the computer is pretty good at keeping track. No codes and it might be something else. It could be something simple like worn motor mounts causing a little more vibration than you are used to. If you really are getting misfires looking into the plugs like @skrelnik suggests might show it especially if you pull them and take a look.
 
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That misfire is going to be more load-dependent than speed dependent. So it should be something you can replicate in any gear at that load.
 
If you are having misfires you'll probably get codes, the computer is pretty good at keeping track. No codes and it might be something else. It could be something simple like worn motor mounts causing a little more vibration than you are used to. If you really are getting misfires looking into the plugs like @skrelnik suggests might show it especially if you pull them and take a look.