I am writing this thread for the purpose of documenting a problem I recently had and wanted to share the cause so that anyone searching may find this information useful.
As many already know, I converted my 1994 Suburban over to TPI (Click here for Details)
. When doing this, I installed a 1991 GTA high pressure in-tank fuel pump in place of the stock TBI low pressure pump. Apparantely, I inadvertently re-installed the short lenght of low pressure hose. In less than one year and approximately 15k miles, it split the side and therefore, I lost nearly all fuel pressure at the rails.
I knew it was either a pump or in-tank hose problem when I manually crimped the return line and could only get about 10 psi of pressure. A normal TPI pressure is 40+ psi.
I went ahead and installed a new AC Delco pump, strainer and the section of hose that came with the pump. Click here
for the link and below are a few pictures. Ed