Hesitation when pressing on the acelerator goning uphill, does it need a new fuel filter

Any codes? Coils, spark plugs, wires, fuel filter, plug up catalytic converter.

The flexible accordion hose that connects the MAF to the throttle body might have a small crack in it. They are sometimes hard to see, especially if in the accordion folds or underneath. Starting off or going uphill will result in enough torque to lift one side of the engine enough to open the crack and cause hesitation.

TPS maybe and fuel filter ?

Your excellent description provides a very short list of possible culprits, since your vehicle's symptoms all appear during periods of higher fuel demand.

(1) fuel filter - clogged - your description is absolutely classic (especially stumbling upon uphill acceleration) for a fuel filter in need of replacement.
(2) spark plug wire - one or more bad - an engine can muddle along while traveling over level terrain with one cylinder intermittently failing to fire, but try to go uphill (even the slightest grade), and the engine will skip badly and can even stall if asked to accelerate.
(3) in-tank fuel strainer - clogged - same symptoms as clogged fuel filter.

The fuel strainer is a sock-like pre-filter attached to the input side of the in-tank fuel pump.

The troubleshooting section of the 1998 Honda Civic EX manual states:

Priority Action Part Type Cause
1 Inspect Throttle Position Sensor - Faulty or Incorrectly Connected Throttle Position Sensor.
2 Inspect Mass Air Flow Sensor - Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit.
3 Inspect Choke - Stuck or Improperly Functioning Choke.
4 Inspect Air Cleaner Tempature Sensor - Damaged or Faulty Air Cleaner Tempature Sensor.
5 Inspect Fuel Filter - Clogged or Dirty Fuel Filter.
6 Inspect PCV Valve - Plugged or Damaged PCV Valve.
7 Inspect Carburetor - Worn, Faulty or Damaged Carburetor.
8 Inspect Fuel Injector - Dirty or Worn Fuel Injectors.
9 Inspect Hose (PCV) - Clogged or Collapsed PCV Hoses.
10 Inspect Fuel Pump - Faulty Fuel Pump.
11 Inspect Fuel Pump - Low Fuel Pressure.

Here's a YouTube video describing hoe to replace a fuel filter on a 2000 Honda Civic (the closest I could find for your 1998).

Hi
That means a hesitation in acceleration. There are lots of possibilities these happens when the car hesitate to move quickly.
Have a full tune up of your engine, just to clear up the possibility, air cleaner, fuel filter, sparkplugs, ignition timing, high tension wire( spark plug cable ), and cleaning up the airflometer.
Have your favorite mechanic do check on those first.
That hesitation have two major part that always breaks down, the fuel filter is already blocked and the ignition timing ( distributor igniting points corrosion and vacuum advance failure due to vacuum leaks ).
Hope that helps you.
Thanks for using FixYa!

check fuel filter. it is starving for fuel. unless the fuel pump is bad. check filter first, then go from there. symtoms of a bad coolant sensor--poor cold idle, stalling, rich mixture retarded timing, slow idle speed, cold hesitation or stumble, poor fuel milage.

check the state of your coolant temp sensor,fuel filter check spark plugs also

The knock is caused by either timing issue or a lean cylinder condition, have you checked the fuel pressure?? has the fuel filter been changed?? A bad knock sensor will not set a light unless it is open or disconnected.

It could be the fuel filter. Check fuel pressure and volume.

change the transmission fluid, replace the oil and oil filter check spark plug cables, check starter coilpak, and make sure there is coolant