Engine and Generator Fuel Supply

[avazquez]

1. Should generator and engine be connected via separate lines to the same fuel tank?

2. Can they share the same line by splitting it at certain point.

3. Should the filter be shared or separate?

4. Any check-valves required? If so what type?

5. Valves?

[motion30]

If you have the ports in the tank, separate with its own filter is safer simple

[Unicorn Dreams]

Don't have a big generator on my boat, but, I would split the fuel line before the filters. then put the generator on their own filters..

[DeepFrz]

I second motion30 and add that if you don't have separate pickup tubes, install them. If your engine pickup is larger or you can install a larger than needed pickup then you can split off before the filter and run a line to the separate filter. But if you have 1/4" pickup line, that is inadequate for both engines.

[Lexam]

I have no clue but this answered a question for me. I was wondering if you would have a separate tank for the generator. Now I know, thanks!

[Dennis.G]

I have a single tank, but everything from there to the engine and to the generator are separate (including separate fuel filters and lift pumps).

If you share a fuel line you have chance of the branch in use drawing the other branch to negative pressure, which could cause air to get into that branch somewhere.

Don't know if there are other reasons for it, but that's how I am set up.

[Hudson Force]

I have two tanks that are selected to supply two parallel Racors, of which one is used and one is standing by, and the fuel after the Racors supplies both the generator and the propulsion engine with their own fuel filters.