Fuel Lines

[genesis08]

Hi guys,

Does anyone know what the fuel line layout[diagram would be helpful]from the tanks[saddlebags]to the fuel pump via filters is.I removed all lines last year and am a bit confused how to put them back?Regards Brian...........

[tsubaki]

Run lines from each tank to a 3 position valve, then to the water seperator, then to the fuel pump.
http://www.wellcraftv20.com/communit...=fuel+delivery

[macojoe]

Thats how I had mine hooked up, except I had a full transom and there was a rear hatch for me to put the switch.

[genesis08]

Thanks Guys,Thats what I thoughtbbut looking at the sierra fuel seperator on the web which I ordered I am trying to figure what the four barb ports are for and where does each one go?

[tsubaki]

Looking at the seperator bracket you can see that two of the ports will access the outer edge of the filter while the other two ports will access the center portion of the filter.
(Before adding the 3 way valve. I had mine connected like this.)
The two that went to the center, was connected to each tank.
One of the two that would draw from the outer part of the filter was hooked to the outboard motor (via bubble) and the other port was plugged.
After adding the shutoff valve I just had an inlet (flows into the center of the filter) and an outlet (draws from the outer edge of the filter) and the other two were plugged.
Check and see if there are any instructions about this being correct or not, I normally don't read them.

[tsubaki]

There are always primeing issues when replacing a filter.
When adding the new one, fill the filter with fuel then screw in place and then try to remove all the air that will be trapped.
This is easily done with an outboard using a primer bubble. An inboard may require some additional thought.
One suggestion might be use the remaining port as a priming outlet by having a bubble and hose connected to it with the end of the hose plugged when unused. When priming is required simply remove the cap and pump the bubble till fuel flows out. I'm sure this is not the normal way it's done with inboards but it will prevent tampering with the line going to the fuel pump.
Some of the guys with inboards would be better at suggesting the priming aspects than me.

[spareparts]

you shouldn't have to worry about priming the fuel system, the mechanical pump on your engine will draw the fuel on its own. It is recomended, but not neccesary to fill the filter when replacing it. If you are using an electric fuel pump(especially with a return side like the late model efi engines) it can be a pain to replace the filter as the system willl need to be bled of air, but with your old style mechanical pump, you shouldn't have any problems.

[spareparts]

the multiple inlets and outlets on the fuel filter are there to allow you mounting and plumbing options(which direction the lines go), the "arrow in" is from the fuel valve, the "arrow out" is to the engine, just plug the holes you don't use( it usually comes with two 1/4 npt pipe plugs), you will have to get two hose nipples for the fuel line, and use liquid teflon on the fittings instead of teflon tape( you can use tape, but you have to be carefull not to have excess that will get into the lines).

BTW, don't install a primer bulb in line, its not desigend to meet regs for installation in and engine compartment, I've used them on portable test fuel tanks, it won't cause any harm, it just isn't recomended, and you shouldn't need it if the rest of your fuel system is up to snuff

[genesis08]

Thanks Guys,appreciate the help.Waiting for stuff to arrive from stateside next week.Will let ye know how I got on.Cheers Brian