Quote:
Originally Posted by Katech_Mike
The primary pump is factory controlled. So unless the pump is failing I'm not sure what else would cause the low pressure on a hot restart only. The pumps are DW400's which have proved to be very reliable.
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Thanks for confirming. I doubt the pump is failing. It puts out the pressure requested everywhere else except hot start and then only for a few seconds. The customer ran their own fuel line so I'm going to ask if they eliminated the check valve. That could maybe explain it. Nothing else makes sense. The tune is good and the pumps are good. I was thinking something physical with fuel lines as the issue at this point.