Still having issues with this one. I replaced the electric fuel pump after the debris took it out. Replaced the fuel filters, 100 micron pre pump, 10 micron post pump. And a new sock filter on the new pump. It all ran perfect, took it to the service station for the state safety inspection. Passed the inspection. On the way home it started starving for fuel, AFR spiked to 30+.
I replaced the electric pump again, and the mechanical pump. (I did not replace the mechanical pump after the tank was cleaned out and there was trash in it that made it to the 2nd pump’s sock.)
Now with the 3rd electric and a new mechanical, I am still having issues. Runs great for 2 +/- miles, then starves for fuel.
I installed 2 fuel pressure gauges, one after the electric pump 0-100 PSI and one after the pressure regulator 0-15 PSI.
Upon startup, I get 62 PSI after the pump. When it acts up, I get 10 PSI after the pump. After the regulator, I get 0 PSI (good reading showing no restrictions in the return line.)
So, now I need to find my cause for low fuel pressure. Bad mechanical pump? Bad electric pump? Also, for some reason, the surge tank is running really hot. I don’t remember it ever running that hot. I have been buying my replacement pumps from
https://walbrofuelpumps.com/, so I assume they are quality pumps.
I am thinking a bad electric pump, again.