89 crx starting problem
 

So I have a 89 crx Still has stock D15b2. Having a problem starting when it's at normal operating temp.
I can start the car everytime when it's at a cold start. But if I let it stay for like a day it will fire right up no issue. But when it's gets warmed up I will shut it off and try to start it and it will just crank and crank til the battery dies haha. Sometimes occasionally I can get it to start again after like 5 try's..... Other than that I have to let it set for a few hours too cool all the way down and then it starts.. Any info would help!! Thanks!

main relay

That's Wat I was thinking. I was thinking fuel pump. But my car never sputters or dies on me. So I ruled that out. Cuz if I get the car started it will stay running all I want.