got a 2001 honda prelude, ran diagnostic tool and these are the codes
P0301B-misfiring cylinder #1
P0302-misfiring cylinder #2
P0300B-random/multiple misfiring

so far i have changed out my spark plug,wires,cap,and rotor. also did an EFI flush and cleaned out the throttle body. same problem still persist. now i am baffled and dont know which way to go.

 

also the misfiring is not constant as was before i did all that work. just out of no where it would start. drive for a little bit to another red light run smooth. this is bothering me bad. could anyone shine some light on my situation. thanks h-t

 

hmm...could it be my ignition coil. but the thing is that it only misfire one and two. because i figure that being a single coil and if it is going out shouldn't it also misfire cylinder 3 and 4.

 

what model prelude?? sh, non-sh

 

it is a non-sh. but would that make any difference on the misfiring codes.

 

try replacing the ignitor in the distrib.. its like 40$ and its not a hard job its pretty stait forward..