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Message: <blockquote data-quote="rjitreeman0909" data-source="post: 103058" data-attributes="member: 15919"><p>Can you install a pressure gauge on the feed line right at the injector pump? I would suggest an old school fuel pressure/vacuum gage. If only gravity feed, pressure will be quite low. Only about .3 psi for each foot of height from bottom of tank to injector pump feed. If it has a lift pump, pressures will also be low. but expect a couple of psi. Once you have cold psi, watch what it does as time goes by. Expect a slow drop over the 30 minutes. In tank pickup screen/filter would be first guess. Drain, check or replace screen, flush tank. Second possibility is in line filter. Replace it. Third could be lift pump or a filter on the inlet side of that pump. Good luck. Let us know what you find.</p></blockquote><p></p>