I've been reading all the posts here about Volvo fuel cell problems and I believe I know the answer to my problem but wanted to run it by the community for a little feedback.
I have been having intermittent starting issues where the engine will crank fine but not fire. If you wait a few hours and try again the engine fires right up and runs great. The problem has been occurring more and more lately so I havent ventured too far from home port. Changed the fuel filter with no improvement. I changed the start, fuel and ignition relays and hoped for the best but while running it on the water ears today the problem came back and stayed.
I didn't have my fuel pressure set up as I was at the marina but I did note the following things: (1) when I depress the schrader valve on the fuel rail the fuel just barely trickles out, I was under the impression the rail was pressurized to about 40 psi so I expected it to spray out. (2) I removed the fuel line going into the fuel cell from the tank and the line had no fuel in it. (3) I blew through the line to verify operation of the check valve and it works. (4) I was able to suck fuel up through the line very easily so there is no restriction. (5) With the line off I had a helper turn the power on so the pump could prime and held my finger over the inlet fitting and felt barely enough suction to pull on my finger.(6) The pump seems to make a higher pitched sound than I remember when it is priming right after the key is truned to the start position.(7) I pulled the pick up tube out of the tank and looked for cracks that might cause it to suck air and not fuel as the tank is currently at half full.
Everything seems to be pointing toward the fuel cell but before I lay down that kind of cash I wanted to see if there could be something I am missing.
Thanks in advance for the support of this forum.