I'm having a little trouble with my hatch, talking about it in this thread: https://honda-tech.com/zerothread?id=1663668 I have a stupid question about the fuel filter. How can you tell when it is plugged. So I took off the fuel filter today, and after I poured as much fuel out as I could, I put a rubber hose into the "in" hole and blew in. It felt like there was some resistance, like the air coming out should have been coming out a lot harder. I'm guessing that this means the filter is plugged up.

 

Just replace it,its not that hard

 

there should be no resistance at all. any and it is clogged

 

On my 87 Si, when the fuel filter was clogged, it actually acted like a rev limiter. It would rev without load, but it would cut off if you drove it with load up to i think it was 400 rpms.