The normal procedure for a no-start is:

1. Check for fuel
2. Check for spark.

The spark is controlled by an array of things and can go wrong at any
time. Many integras of your age suffer a dead igniter and sometimes
coil.

The best location for humming pump is from inside the car. It's
quitter and very close. You probably know that a pump only runs for
the first few seconds.

Checking for fuel is best when a plug is removed.

>Do I have to install a new washer?

Yes. In the mean time tighten it really tight with one hand or about
8-12lb.

>Can a clogged fuel filter cause the fuel pump not functioning?

No. The fuel pump has a relief valve. Please check for fuel, spark,
and repost, if time permits.
Koiji


> My teg was running fine yesterday and it just won't start today.
> Because I didn't hear the fuel pump humming, so I checked the main
> relay. There is nothing wrong with it, so I am thinking it might be
> the fuel pump. Before I jack up the car and check the fuel pump, I
> just want to know if Like high pressure in the fuel line? BTW, do I have the
> replace the on the fuel filter if I want to install a new fuel
> filter? Thanks in advance.
> Max