GMC 1976 ZEO 6083 Maintenance Manual page 756

24F- 2 LP GAS SYSTEM
Figure 1-L .P . Gas System
TROUBLE DIAGNOSIS
Problem
Possible Cause Correction
Gas appliances won't Appliance faulty
Refer to "TROUBLE
operate.
DIAGNOSIS" in the
particular section for correction .
Insufficient gas supply Vapor POL valve not open Open valve completely . Refer to
completely. Regulator out
"ON VEHICLE ADJUSTMENTS"
of adjustment
for regulator pressure
specifications .
Leak in LP gas system .
Make up a soap solution . Apply to
all fittings . If bubbles occur a
leak is present. Inspect fitting for
damage or cracks . Replace fitting
if necessary. Use only A .G.A .
(American Gas Approved) fittings.
Otherwise tighten fitting.