Delivery valve question

[Dubyagee]

OK, I corrected the runaway Rpm's. The idle control actuator was sticking.

I lost pressure on the number four injector. I removed the delivery riser for number four, checked and cleaned the parts, replaced the crush washer, o-ring and stage torqued it to specs. It was good for a few and dropped out again. Any ideas on why it is doing this?


Thanks,
WG