misfire only when warm???

[DerekStangGT]

im getting a bad misfire only when the car is warmed up, and mostly when the car is in low RPMs (under 2k) and slightly under WOT). any experience/suggestions before i start tearing into things??

 

[SLN043]

is your check engine light on? how do you know if its really misfiring? can you determine what cylinder(s) its in?

 

[DerekStangGT]

is your check engine light on? how do you know if its really misfiring? can you determine what cylinder(s) its in?

no CEL. i know its misfiring, even at idle. feels like a bad stumble. no, i dont know what cylinder its in

 

[Stan Weiss]

Barrow a coil from a friends car and rotate it from one cylinder to the next until you find the bad coil.