All symptoms
Diagnosis
WILD / SURGING POUR
Stream sputters, alternates foam and beer.
3
LIKELY CAUSES — RANKED MOST COMMON FIRST
- 1
WARM SPOT IN THE LINE
Any uninsulated section above 40°F causes CO₂ break-out mid-line.
Fix- Inspect trunk insulation end-to-end.
- Check that glycol return is within 2°F of supply.
- 2
KINKED OR TWISTED LINE
Restriction collapses, creating turbulence.
Fix- Straighten lines at the keg and tower; replace any pinched sections.
- 3
FAULTY FOB OR SHANK WASHER
Air intrusion or partially closed FOB sensor causes pulsing.
Fix- Reset the FOB after every keg change; inspect float and seal.
STILL NOT FIXED?
Capture temp at the faucet, applied PSI at the regulator, and a photo of the pour. Then check the spec reference or run a full line cleaning.