I have a 1997 Honda Civic LX with a d16y7. It was driving fine yesterday and today it started misfiring between 3200rpm and 3500rpm. It goes past the 3500rpm but there is a loss of power or gas. It seems to bog consistently when accelerating. There is no cel and I have no idea what could be causing it to act this way. My car does have 235,000 miles. I recently did a tune up on my car so the spark plugs and spark plug wires are still pretty new. Please help. Thank you!!!

 

My 1998 LX was doing that a couple weeks ago. I figured an injector or two could be partially clogged. Bought a bottle of Seafoam from autozone and put half a bottle per fill up for two consecutive fill ups and everything is very smooth now. Didn't do a thorough Seafoam regimen (1/3 in gas tank, 1/3 down oil cap, 1/3 through a vacuum line) because my head had been recently replaced and wasn't time for an oil change yet.

 

Does the CEL work? Does it turn on for a few seconds when you first start the car?

 

Thanks LucidSteel i think im going to have to try that and see how it works.
WellFedHobo, yes the CEL works fine.