Gas Tank Question

bigdog · 04-09-2009, 12:16 AM

Some background:
My engine is a Mercruiser 4.3LX, with an electric fuel pump mounted between my fuel tank and feeds directly into my fuel filter. Gas comes through a metal tube into the fuel pump from the tank.

CL 240:
Excuse my lack of knowledge, but when you say 'pickup tube' in my tank? Is the pickup screen inside the pickup tube?
Would this actually located 'in the tank' or external?

kshace:
You mentioned and 'anti-siphon valve' located where the fuel line connects to the tank. If this something visible which a hose line is attached to? Still confused on how I check if I have this anti-siphon valve as part of my fuel system?

Last.... I have tried unsuccessfully to siphon gas out of my tank and replace with fresh. Bought a 10' length of 1/4 plastic tubing and a hand siphon. I can get about 6-8' of tubing into tank, but seem to be hitting an obstruction, but may be hitting bottom of tank? Anyway, cannot get tubing primed and filled with gas, and let gravity do the work. Have looked around for one of those drill attachment pumps, but cannot locate anywhere?

Anyone have a good method to drain gas from tank? I'm open to any suggestions. BTW, tank holds 35 gal.

Thanks!

04-09-2009, 12:16 AM	#7
bigdog Senior Member Join Date: Apr 2006 Location: Central MA-Gilford Posts: 1,451 Thanks: 345 Thanked 123 Times in 97 Posts	Gas tank question Some background: My engine is a Mercruiser 4.3LX, with an electric fuel pump mounted between my fuel tank and feeds directly into my fuel filter. Gas comes through a metal tube into the fuel pump from the tank. CL 240: Excuse my lack of knowledge, but when you say 'pickup tube' in my tank? Is the pickup screen inside the pickup tube? Would this actually located 'in the tank' or external? kshace: You mentioned and 'anti-siphon valve' located where the fuel line connects to the tank. If this something visible which a hose line is attached to? Still confused on how I check if I have this anti-siphon valve as part of my fuel system? Last.... I have tried unsuccessfully to siphon gas out of my tank and replace with fresh. Bought a 10' length of 1/4 plastic tubing and a hand siphon. I can get about 6-8' of tubing into tank, but seem to be hitting an obstruction, but may be hitting bottom of tank? Anyway, cannot get tubing primed and filled with gas, and let gravity do the work. Have looked around for one of those drill attachment pumps, but cannot locate anywhere? Anyone have a good method to drain gas from tank? I'm open to any suggestions. BTW, tank holds 35 gal. Thanks!