
Stormworks: Build and Rescue is a Steam game that allows players to design and create their own vehicles and machines. One aspect of this is the ability to build custom fuel tanks to power these creations. This can be achieved by placing a fluid spawner inside an enclosed volume and adding a pump to transfer the fuel from the tank to the engine. However, this process can be challenging, and players have reported issues with engines dying when fuel tanks are less than half full, as well as difficulties with equalizing pressure and maintaining fuel economy. To address these challenges, players have suggested adding air filters, vents, and hatches to the fuel tanks.
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What You'll Learn

Add a fluid spawner inside an enclosed volume
To build a custom fuel tank in Stormworks, one of the steps involves adding a fluid spawner inside an enclosed volume. This enclosed area should be sealed completely, with the fluid spawner placed inside. The type of fluid, such as diesel, should be selected. Additionally, a fluid counter can be included to monitor the amount of fuel in the tank.
It is important to consider the placement of the fluid spawner within the enclosed volume. The spawner should be positioned in a way that allows for efficient fuel extraction. For example, you may want to place the spawner at the bottom of the tank, with angled blocks guiding the fluid towards it, similar to how a sink plughole works. This design ensures that the fuel flows towards the spawner and can be completely used, preventing issues with fuel sloshing around and the engine cutting out.
Furthermore, when creating a custom fuel tank with a fluid spawner, it is essential to incorporate a pump to transfer the fuel from the tank to the engine. A recommended setup is to connect a fluid port to a liquid release valve, which is then connected to a pump that leads directly to the engine. This configuration ensures effective fuel delivery.
Another crucial aspect to consider when adding a fluid spawner inside an enclosed volume is pressure management. Negative pressure can build up as fuel is sucked out, impacting the engine's performance and fuel efficiency. To address this, a gas relief valve connected to open air can be included in the design. This valve helps relieve the negative pressure and ensures that the engine can utilize the fuel more effectively.
Additionally, when constructing a custom fuel tank with a fluid spawner, it is worth noting that the presence of air in the tank is not a significant concern. Engines and modular fuel manifolds in Stormworks have been designed to handle negative pressure and can still pull fuel from an airless tank. Therefore, there is typically no need for a fuel pump or a liquid relief valve between the tank and the engine. However, a separate gas relief valve leading to the atmosphere can be incorporated to prevent potential refuelling issues. Overall, careful consideration of these design elements will contribute to a functional and efficient custom fuel tank in Stormworks.
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Include a pump to move fuel from the tank to the engine
To build a custom fuel tank in Stormworks, you will need to include a pump to move fuel from the tank to the engine. Here are some detailed instructions on how to do this:
Firstly, create a sealed tank out of blocks or components. This tank should be designed in such a way that the liquid inside flows towards the fuel pump. A recommended design is to have the fuel pump at the bottom, with angled blocks making the liquid flow into it. This way, you can avoid the issue of the fuel sloshing around and away from the pump once it reaches a certain level, which can cause the engine to cut out.
Next, place a fluid spawner inside the tank and use the select tool to adjust the fuel type and fill level. You can use the fluid spawner to fill the tank with fuel when your vehicle spawns. Then, connect a fluid port or similar mechanism to pull out the fluids. You can then connect this fluid port to the pump and the engine.
It is important to note that pipes in Stormworks do not store any fluid; they simply serve as connections. Therefore, you may want to consider adding a fluid counter or meter to check the amount of fuel in the tank. Additionally, make sure to include a gas relief valve connected to open air to avoid negative pressure buildup as the fuel is sucked out, which can reduce the usable amount of fuel.
If you want to increase the fluid flow rate, you can add more pumps to your tank. However, keep in mind that the efficiency of each additional pump will be less than the previous one. For maximum flow, it is recommended to use multiple tanks with dedicated pumps.
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Add a gas relief valve to avoid refueling issues
To avoid refueling issues, it is important to add a gas relief valve to your custom fuel tank in Stormworks. The gas relief valve should have one fluid input inside the tank and one fluid output exposed to the outside, such as the side of a ship. This setup ensures that negative pressure does not build up as fuel is sucked out, allowing you to utilize all the fuel in your tank effectively.
However, it is crucial to avoid using a one-way valve with the gas relief valve, as this can decrease the flow rate and create challenges in pressurizing the tank. Instead, consider employing pumps to pressurize and depressurize the air inside the tank, depending on whether you intend to operate the engine or refill/drain the tank.
Additionally, the shape and design of your custom fuel tank play a vital role in ensuring optimal fuel usage. It is recommended to position the fuel pump at the bottom of the tank, with angled blocks guiding the liquid flow towards the pump. This design prevents the fuel from sloshing away from the pump as the tank empties, avoiding engine cut-out issues.
Furthermore, when constructing your custom fuel tank, consider using basic blocks such as cubes and wedges to create a sealed container. Wedges, in particular, can increase fluid capacity while saving space. By placing wedges with the flat part on the outside and the sharp corner on the inside, you can maximize fuel volume efficiently.
In summary, adding a gas relief valve to your custom fuel tank in Stormworks is crucial to prevent refueling issues. However, it is essential to design the tank thoughtfully and consider the placement of the fuel pump and the use of basic blocks to ensure a smooth and efficient fueling system.
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Avoid one-way valves, which drop flow rate and prevent tank pressurisation
When building a custom fuel tank in Stormworks, it is important to consider the placement of valves and pumps to ensure optimal fuel flow and engine performance. One component to avoid is the one-way valve, which can cause significant issues.
Firstly, one-way valves can lead to a drop in flow rate. This is because they restrict the flow of fuel and prevent it from being fully extracted from the tank. As a result, you may experience decreased fuel efficiency and longer wait times for refuelling or draining larger tanks.
Secondly, one-way valves hinder tank pressurisation. Pressurisation is crucial for optimal fuel extraction. Without it, a vacuum can form inside the tank, making it challenging to utilise all the fuel. This issue can be mitigated by using pumps to pressurise and depressurise the air inside the tank, depending on whether you intend to operate the engine or refill/drain the tank.
It is worth noting that while adding a gas relief valve without pumps can help with pressurisation, it may also result in a poor flow rate. Therefore, it is recommended to have pumps in place to manage the pressure effectively.
By avoiding one-way valves and carefully considering the placement of pumps and relief valves, you can maximise the efficiency of your custom fuel tank in Stormworks and prevent issues with fuel flow and engine performance.
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Use pumps to pressurise and depressurise the air inside the tank
Pumps can be used to pressurise and depressurise the air inside a fuel tank in Stormworks: Build and Rescue. This is especially useful if you want to operate your engine or fill/drain the tank for refuelling or fuel trading.
To pressurise the tank, you can increase the fuel pressure in the line running to the engine by using a pump. This can be done by experimenting with pressure sensors and pumps. However, it's important to note that simply raising the tanks may not increase the maximum rpm.
To depressurise the tank, you can let out any gas trapped inside an outlet using a gas relief valve and a one-way valve (or pump) to prevent outside gas from going in. Depressurising the tank is ideal for filling it up, as it allows for a faster flow rate.
Using pumps to pressurise and depressurise the tank is preferable to using a gas relief valve, as the latter can result in a significant decrease in flow rate, causing long wait times for medium to large tanks to fill up or drain.
Additionally, when using pumps, it's important to consider the number of pumps connected to the tank. While adding more pumps will increase the fluid flow, each additional pump becomes less efficient than the one before. Therefore, it is recommended to use multiple tanks with dedicated pumps to maximise flow.
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Frequently asked questions
Put a fluid spawner inside an enclosed volume. Add a fluid counter to check the fuel amount, and a pump to get the fuel from the tank to the engine.
Fluid port to liquid release valve, to pump to engine.
Add a gas relief valve connected to open air to avoid negative pressure buildup. Design the tank so the liquid flows toward the fuel pump.
Engines dying when the fuel gets below half a tank, or issues with the gas relief valve causing a drop in flow rate.
Try adding an air filter and venting the tank. Ensure you have a one-way valve with the gas relief valve to prevent the tank from sucking in air.











































