I am relatively new to my machine, a honda 690 w/8gpm pump and have bad gasonline odor in the garage. Does this engine pressurize the fuel tank or suction from the tank to provide fuel to engine. I seem to think it pressurizes the tank and leads to odor when not running due to the pressure. Anyone have issues with fumes? Maybe a vent somewhere, it just seems like strong fumes.
There’s only one hose in right? Can’t pressurize and pull at the same time right? Curious to hear other answers. I have no idea. I just know mine start. Lol.
It doesn’t pressurize. It sucks using a vacuum pump running off crankcase pressure. What kind of tank do you have? The smell is likely coming from the tank. Unless you have a stuck float valve in the carb and the thermal expansion in the gas tank is allowing the bowl to overflow.
No, there is two hoses.
It’s a 6 gallon “marine” tank I think, and has two hoses with quick connects. One hose has a filter. That’s why I think it sends pressure down one line and fuel out the other, rather than suction through just one line.
Mine only has one. What’s the second one for?
Can you send a picture?
This is a picture from last year, dont’ have anything recent. If you look closely on the left, you can see the two fuel lines off the engine on the left side. so, two lines go to the tank. Zoom in on the pic and you can see what I talking about.
I can honestly say I have no clue! But I am sure that the motor sucks fuel and doesn’t pressurize the tank. That would be a big first for me. My guess is it’s an overflow return that the maker plumbed in and not the motor manufacturer. I could be wrong though…
I have that same machine and mine has two fuel lines as well. Not sure what they both do, but it does have two. I assumed it was a Honda thing, but maybe its not.
It’s not california compliant, so I doubt it is a vapor recovery line, but, who knows? Maybe it is. But is sure is not recovering the vapours for me, LOL
Tank a lighter and move it around the lines till you hear a big boom… that should help you find the smell!
I’ll bring it over to your garage and we can run the lighter test together.
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Just don’t tell my full time employer… bring it on over!
Can you follow that 2nd line under the engine? Where does it go? I’m stumped.
Pause at 28 secs this video. He has the same machine as mine, you can see the two lines to the fuel tank. Maybe it is only certain dealers that use this setup. Must be vapor recovery of some sort.
Second hose is epa compliant crap. Don’t need it
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I find with mine (sounds like you have the same tank…unvented) that when it’s full and the lid is on tight the heat and liquid expansion forces gas out around the cap next to the fill cap. I found that if I leave it little bit below the “full” line I don’t have as much trouble with it. Would you mind posting a picture of your tank?
Heat WILL make the pressure in the tank increase, and that pressure WILL go somewhere. I guess the cap is the weakest point.
FYI, if you’d like some interesting videos search “BLEVE”…You’ll never look at an LP storage facility the same way again.
Look at the video above @ 28 seconds and that’s the tank I have.
Can’t take a photo till this weekend.
Yes, when the garage is warm, the fumes are really bad since I started parking the trailer in the garage. Brand new machine with only about 5 hours on it. I’m an every-other-weekend warrior.
