How it works
Find out why a seemingly connected rail network delivers less than it should. Each stage in the walkthrough below has a distinct practical objective; complete the current supply or control loop before expanding it.
Practical advice
Compare items leaving the receiving station with factory consumption over a time window. Slow supply can originate upstream in mines, loaders or rail transport.
Mistakes to avoid
Never assume an unrelated blueprint or another version of Factorio has identical recipes, technology unlocks or machine ratios. Use the checkpoints in this guide to diagnose your own save.
Train station throughput troubleshooting: complete walkthrough
Check the actual demand
Compare items leaving the receiving station with factory consumption over a time window. Slow supply can originate upstream in mines, loaders or rail transport.
Inspect station loading
Verify both sides of cargo wagons, inserter throughput, buffer chests and whether loaded trains depart using the intended wait condition.
Inspect track contention
Observe junctions under multiple trains. Long signal blocks and insufficient approach/exit space can stop unrelated routes.
Compare train limits
Check available unloading bays and station limits. Train orders are not a substitute for a station that has no safe waiting room.
Fix one limit at a time
Increase loader capacity, add another wagon or revise track layout only after identifying the actual constraint, then test with steady factory demand.