residual fuel pressure diagnosis...?

[Lee]

Hi...

I've been having a hot start problem...it acts like vapor lock.
I checked the pressures today. System pressure and Cold pressure are within spec. However, residual pressure wasn't.

After 10 minutes, it was at 1.4 bars
20 minutes, 1.1 bars
30 minutes, .3 bars.

According to Bentley, at 30 minutes it should have been at 1.1.

My question is this: from this pressure test, can I determine if it is the fuel check vavle or the accumulator, or should I start with the valve, and work my way back?

Any help is greatly appreciated.

Thanks.