I'm wanting to use a marine tank I have as an aux tank. Does the gen create enough vacuum to suck the fuel out of the marine tank sense marine tanks pull fuel from the bottom. I've read the tank has to be elevated over the gen to let gravity do its thing, therefore I'm unsure if the "pulling of the gas from the bottom of the marine tank" would work.I remember seeing pics and info from someone who modified a fuel cap on the gen to connect to the fuel tank. If someone could link me to that I would be appreciative.Thanks!

Hi,If the genny doesn't have a fuel pump then it isn't going to suck much fuel.

if no pump ?you,d have to keep the portable tank higher than the tank on the gen set.

I was looking at doing that for mine. I was going to weld up a plate with legs indexed for the stacking cups on the top of the genny that would then have a hold down for the tank so it couldn't fall off the. Order a new cap from champion that would have the hose adapter securely fitted to the vent hole so a vapor lock was created. To keep the siphon running that you would help to get started with a few pumps of the bulb. There should be enough suction to keep it. I've run the genny with the vent closed and when it choked out due to vacuum when the vent is opened there is a very encouraging sucking sound. In my plan I was going to make a y hose to feed another of the same with 2 stacked and the tank on top I thin it might have needed to be staked out on uneven ground but the siphon effec would be even greater.

all I can tell you is I tried it on a Honda and many have said it works but I never could get the gas to flow, yes I know this is for your gen and not my gen but I wish I knew the secret to get the gas to flow. I finally broke down and put a priming bulb in and just gave it a pump or two to keep the gen filled up so it would keep running.

i don't have the web linkbut i think 'supergen products'has an extended run system availablei'm guessing that if you modifed the gas capand started with a full on board tank, an elevated gravity feed mightmove fuel from the elevated tank to the onboard tanka primer bulb, and filling the line before attaching to the genset, would decrease air and internal pressure

Help me: External marine tank on Champion 2000 watt gen.

MX-RV
Explorer
Dec 17, 2013
I was looking at doing that for mine. I was going to weld up a plate with legs indexed for the stacking cups on the top of the genny that would then have a hold down for the tank so it couldn't fall off the. Order a new cap from champion that would have the hose adapter securely fitted to the vent hole so a vapor lock was created. To keep the siphon running that you would help to get started with a few pumps of the bulb. There should be enough suction to keep it. I've run the genny with the vent closed and when it choked out due to vacuum when the vent is opened there is a very encouraging sucking sound. In my plan I was going to make a y hose to feed another of the same with 2 stacked and the tank on top I thin it might have needed to be staked out on uneven ground but the siphon effec would be even greater.
midnightsadie
Explorer II
Dec 17, 2013
if no pump ?you,d have to keep the portable tank higher than the tank on the gen set.
pianotuna
Nomad III
Dec 17, 2013
Hi,

If the genny doesn't have a fuel pump then it isn't going to suck much fuel.

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Help me: External marine tank on Champion 2000 watt gen.

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