i have 1994 honda civic ex sometimes when i try to start the car it startsbut some times it doesnt. but some time if i pump the clutch it will start and alsoif iturn the ignition and keep the key turned it will have like a late start i have changed the starter and everything and it still wont start some times and the starter is good what could be the problem

 

I had a similar problem and thought it was my starter. There's two beefy electrical connections near the battery: one round and one rectangular. My problem was that there was way too much white grease (possibly dielectric) inside the rectangular connection. I'm not sure if it was a mechanic who did this or the last owner, but the starting was erratic and exactly like you describe. Be sure to d/c the battery before you start trying to clean these connections

EDIT: bah, I'm an idiot. I drive an '86 CRX Si, so your connections probably look different or are in different places. Still, the problem could be the same. Check your electrical connections between the ECU and your wiring harness (by check I mean physically disconnect them and check the insides for gunk)

 

Listen for the humming sound of the fuel pump activating behind you when the ignition key is turned to ON without cranking the engine. If you fail sometimes to hear this sound, then your fuel pump or the main relay is faulty. Also, when was the fuel filter last replaced?

 

i dont know i just bought the car about 5 months ago and i hear the fuel pump sometimes coming on

 

Are you saying that sometimes you can't hear the fuel pump activating? If so, you are having intermittent problems with the main relay or fuel pump.