I have 2 fuel tanks
lines running to a "T" then into the Racor
. There is a shut off on each line. Can I run with both valves open and drawing off both tanks
? Same with return lines, can I run with both open?
Second question: My older westerbeke
gen set all of a sudden became hard starting. My guess is it's the glow plugs, because once started, it runs great. Plenty of cranking speed. It will start when I combine it with the main engine
. What is the best way to test if it is glow plugs?