Fuel priming problem?

[68EFIvert]

I have a classic Mustang with fuel injection. I am using a Fox Body Mustang style fuel injection setup. My fule pump is an Aeromotive A1000. When the car sits for a week or so I am having a really hard time starting it. It seems like the fuel system is not geting primed very quickly. I have never had this problem before. I can hear the fule pump turn of for a second whent he key is turned on. Once the car starts it runs just fine. Any ideas of what could be causing this problem? fuel pump seals starting to go bad?

[sccacuda]

The regulator should be the check valve (Ford guys check me on this). It is simply bleeding the rail down. Cycle the key a few times and let the system prime and then try to start it to verify.

[68EFIvert]

That makes sense. I will check it out to see if it is holding the pressure. I had my wife turn the key on a few times the first time it did it and I could see that it was pressurizing but it would fall off as soon as the pump stopped. Thanks!

[68EFIvert]

It looks like my problem was not having a check valve at the end of my Aeromotive A1000 pump. They don't have a built in valve and when the pumps get a little use from use they tend to operate a little smoother. When the pump is not on then the pressure from the the fuel rails is enough for it to make the pump move in reverse thus depressurizing the fuel rail. At least that is what the Aeromotive help line said to me.

[sccacuda]

Still think I would just cycle the key a few times after it sits for a long period and call it fixed.

[68EFIvert]

That didn't work. I cycled it like 15 times and still didn't fire up. If I crank it it comes alive earlier. Adding a check valve is only about $50 and it if takes care of this annoyance it is well worth it to me. Thanks for the help though and nudging me in the right direction.

[68EFIvert]

I put the check valve in and the car starts better than it ever has. I am happy the fix was so inexpensive. It rarely works out that way for me.