Propane Connection Leak Test (Soapy Water)
Why it matters
Propane connections corrode in rain, wind, and temperature cycling; micro-leaks from corroded fittings are silent and invisible. A small leak can cause significant propane loss, but more critically, can create explosive atmospheres or carbon monoxide risk. Soapy-water testing catches leaks before they escalate.
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How to do it
- 1
Turn on or activate the propane supply to the line (open valve at tank or main shutoff).
- 2
Mix dish soap with water in a spray bottle (1 part soap to 4 parts water).
- 3
Starting at the tank, spray all visible fittings, couplings, and teflon-wrapped connections along the supply line.
- 4
Watch for bubbles; any bubbles indicate escaping propane, confirming a leak.
- 5
Small, slow bubbles at teflon-wrapped joints are often acceptable; larger or steady streams indicate significant leaks.
- 6
Mark leaking connections with bright tape; contact a licensed propane technician or your supplier for leak repair.