Start by symptom
What's wrong with the beer?
Pick the closest symptom. We'll narrow it down from here. Keep in mind that at least 90% of draught systems issues are caused by temperature-related issues.
Too foamy
Mostly head, never settles
Flat / under-carbonated
Lifeless, no head
No pour or trickle
Faucet open, nothing comes out
Off-flavor or sour
Buttery, vinegar, cardboard, musty
Wild / surging pour
Sputtering stream
Cloudy / hazy
Should be clear
Leaking somewhere
Beer or gas escaping
Temperature problem
Beer warm, cooler warm, glycol off
The System
Where is the problem?
Tap any component to see common issues and jump straight to the fix.
Hotspot 5
Walk-in cooler
Most draught problems trace back to temperature. Check this before chasing pressure.
What to check