Login Register

Siphoning Fuel From Tank

A mid-size luxury crossover SUV, the Volvo XC90 made its debut in 2002 at the Detroit Motor Show. Recognized for its safety, practicality, and comfort, the XC90 is a popular vehicle around the world. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America). P2 platform.
Post Reply
wanderdüne
Posts: 223
Joined: 18 May 2017
Year and Model: 2004, 2006 XC90 2.5T
Location: kitchen
Has thanked: 6 times
Been thanked: 45 times

Siphoning Fuel From Tank

Post by wanderdüne »

I am writing this to share my experience in removing my old "covid" fuel from my backup XC90, 2004 2.5T which has been sitting a lot; also with an eye to using this method to get gas to run my generator in an emergency if I run out of propane. This is not a DIY, and I am not promoting this method, but just sharing my experience and method for removing fuel from the XC90.

I had tried the standard method of siphoning with no luck and also looked into the "GasTapper" method, using a stiffer 1/2" OD hose with a small flexible hose threaded through it. Unfortunately, this method also does not work on the XC90.

What worked for me was to purchase a Schrader Valve Extender Hose like for a dually tire to fit onto the Schrader Valve on the fuel rail, I think also there is a Schrader Valve by the fuel filter, but I did not try that location.
Anyway, I removed the valving from the male end of the extension and fitted a piece of fuel hose to the threaded end there with some RTV on the threads and a worm clamp to hold it.

Next, after bleeding the residual pressure from the Schrader Valve on the rail, I threaded the female end of the extender onto the rail Schrader valve.

Next, I used a fuel line clamp on the fuel hose drain line and clamped it closed in order to build starting pressure when the pump primes in Pos.2. Then checked for leaks.

Next, I started the XC90, then released the clamp from the fuel line drain and it began pumping fuel into my gas can. It flows at a decent rate at idle and doesn't seem to affect idle speed or engine smoothness, it ran as normal.

This method seems to work well, but I haven't ran it by VIDA yet, wondering if it will set a code for pressure. I'll look into that soon. There were a lot of options for the Schrader Valve Extender, keeping in mind that the angled, all metal ones could have an interference issue on my other XC, I opted for a rubber hose one, here: https://www.amazon.com/Bluecell-Flexibl ... 188&sr=8-3

Does anyone see a problem with this method in regards to overtaxing or over-running the fuel pump for an occasional 5 gallon-ish drain?

Thanks

User avatar
abscate
MVS Moderator
Posts: 35294
Joined: 17 February 2013
Year and Model: 99: V70s S70s,05 V70
Location: Port Jefferson Long Island NY
Has thanked: 1504 times
Been thanked: 3817 times

Post by abscate »

It’s a substantial technical lift from the method an ice pick through the bottom of the gas tank and a chewing gum repair.

Additional benefits

Your ice doesn’t taste like gasoline
You get to keep your chewing gum
You can collect a given amount of gas, not just the whole tank.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread

Post Reply
  • Similar Topics
    Replies
    Views
    Last post