what could this be while im driving at a constant speed my civic just falls on its face and i havent let off the pedal or give it more gas, then it just kicks in. it does it around like 4grand (rpm)

i had a msd external coil, swapped it back to stock had a holly 255 intank swapped it back to stock. and it still does it so if anybody has any info that would be great

 

bump

 

Check your plugs, cap and rotor and make sure they're good, maybe anticipate a bad ignitor.

 

iv already done all of that i think i might have got some bad gas