In regards to your question, it is advisable to check the fuel pressure at idle and at maximum no load rpm and the pressure should be 20 psi and 60 to 70 psi at the secondary. You might have a restriction at the port tank and to verify the problem run the return line to tank into a 5 gallon pail and run the engine at 1200 rpm and check the return flow out of the cylinder head and it should be .9 of a gallon in one minute of operation. Having done this many times, also check to see if you have the right restriction fitting on the return side of the fuel system and it should be an R80 restriction fitting as the number is stamped on the brass fitting. In Detroit Diesel land they like the fuel pressure to feed the injectors and I have not worried about restriction but as you have the gauges, they are telling you something. If you need further advice from me the Detroit Diesel Tech. please e-mail at [email protected]. Hope this helps
Roger On Aug 9, 2:55 pm, BC <[email protected]> wrote: > I have a 42 ft. Uniflite with DD 671 engines. The primary fuel filter > have vacuum gauges on them. The Stbd side normally runs between 2 to 3 > in vac., the Port side runs between 7 to 8 in. vac. Both filters are > new and each tank is more than 3/4 full. I suspect that there is a > partial blockage in the Port side supply line. Has anybody else had > this problem and what did you do to fix it. > Thanks, > BC --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/unifliteworld?hl=en -~----------~----~----~----~------~----~------~--~---
