I have a 97 civic EX that still runs great (most of the time). About
twice a year I attempt to start the car and it sounds like it is about
to start but it never catches. If I hold the accelerator to the floor
and try to start it, it starts after about 10 seconds of cranking.
After it starts it sounds like it is running on 3 cylinders until I get
the rpms up to about 5000. Once it hits that number you can actually
hear something pop and the car runs fine.

I had this problem more often about a year ago then I started using a
fuel injector cleaner and it stopped happening. Any ideas how I can fix
this? Based on that I am guessing this is something in the fuel system,
but I haven't been able to narrow it down. Has anybody else had a
similar problem?

Thanks