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originally posted by: esteay812
I got this pressure washer from my sister after the pump failed. The engine is still fine, but I had nothing to use it for, so I decided to build this vapor-only intake system for it. I had most of the parts for it and the other pieces of PVC and extra items cost less than $20.
This is the 2nd one I have built, but this one is put together much faster. The first one is a little beefier and more fine tuned, but it's underneath a shroud and is a pita to take apart. The first engine can run for a couple weeks with the same amount of fuel I'd burn in a day using the stock set-up.
I've heard of people doing this to cars, but I don't know much about that.
I know ATS usually enjoys stuff like this and I hope you like the video. Let me know if you have any questions and I'll do my best to answer them.
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Just FYI be careful of flashback/misfire on larger projects, My younger brother fitted a home made inlet throttle body on an old 70s ford inline engine and got 2nd deg burns to hands and face. He didn't have an arrestor to prevent flames making it's way to his vapour box and it got blown apart. It's a different ball game with larger engines with changing RPMs. Take care ATS friends,edit on 25-2-2017 by Robbo2006 because: (no reason given)
originally posted by: seasonal
a reply to: esteay812
Is the point of the video to show a 5 HP engine run for weeks on that 2" of gas in the wind shield washer bottle?
originally posted by: esteay812
a reply to: Miccey
The tube in the top of the milk jug only goes in about 2".
There is another tube that enters from a hole cut beneath the top of the jug. That tube has tiny holes cut in it and is submerged below the gas.
When the engine is started, the compression causes air/gas vapor to be sucked in through the top hose, pulling air from the second hose. The air coming through the 2nd hose bubbles underneath the gasoline, creating more fumes into the mix. The engine is running on the fumes/air mix.
The use of fuel this way is more efficient than the standard way of introducing fuel to the engine.
originally posted by: ThickAsABrick
I've looked at such systems online but have never experimented. Most critics claim that by having a smaller amount of fuel, you also have less of the detergents and such that help maintain the valve train and rings and that engine failure would be likely. Of courselves they hadn't experimented either.
So what I'm curious about is how your older unit is doing and how low has it been running in that configuration?