fuel pump fuse blows

[Tim]

I just got this car for my brother so I don't know much about the car yet. (I put mine up for restoration)

Has anyone had this problem before?

This is what I did.
1. Car won't start
2. Check fuel pressure (None)
3. Check fuse (it's blown)
4. Replace with 20 amp like it's supposed to have (it had a 10amp in it)
5. Start engine (idles for aboput 2 min and dies)
6 Check fuse (blown)
7 Put in another fuse
8 Turn key to on to let pump turn on
9. Will not blow fuse if not started (Let it sit like that and took in and out fuse to get the pump to recycle and it never blows the fuse)

Fuse blows ONLY after you start the car. It is random how long the car will run with out blowing it.

Could it be:
1. the fuel pump shorting out
2. or a short somewhere in the wiring

The relay is new.

[idbeast]

bad pump, heating up and having too much resistance, blowingf the fuse.