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Exploring Fuel Transfer Bugs in KSP
KSP: Why Your Fuel Transfers Keep Failing (Fix This Now) is staging issues in the Vehicle Assembly Building. Patches and new parts change how pumps handle flow. Research shows resource rules can break after updates.
Root causes and quick theory. KSP: Why Your Fuel Transfers Keep Failing (Fix This Now) happens when docking ports mismatch or tanks stack wrongly. Studies indicate pumps need correct height and shared action groups to move propellant.
Check flow direction and part alignment.
Troubleshooting steps.
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Separate and redo the connection.
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Symmetry setting must match on both sides.
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Use action group tanks for engine cutoff.
Simple takeaway. Matching symmetry and height stops most transfer failures.
Q&A
Q: Does this issue only happen with large ships?
A: Any craft with docking ports can fail if symmetry or part height differs.
Q: Will switching to stock settings fix it?
A: Stock rules often behave more consistently than modified resources.
