Step; Figure - Weber Genesis 5000 LP Owner's Manual

Side Burner Troubleshooting
WARNING: Before attempting any troubleshooting
steps, all gas controls and supply valves should be
in the OFF position.
Problem
Side burner does not light.
Flame is low in HIGH position.
Flame is very yellow in conjunction with
the smell of gas,
OR
Burner makes popping noise in conjunction
with the smell of gas.
Push button ignition does not work.
Side Burner Maintenance
WARNING: All gas controls and supply valves
should be in the OFF position.
Check igniter: Remove side burner cover. To remove
side burner cover, remove control knob and screws that
hold cover to bottom. Figure 19. Make sure wire is
connected between igniter and electrode. Check that
igniter lock nut is tight. Figure 20.
Note - If the igniter works loose, carefully tighten the
igniter lock nut with an adjustable wrench or pliers.
Adjust igniter electrode. Gap should be 1/8 to 3/16 inch
from tip of electrode to burner. Figure 21. Spark should
be a white/blue color, not yellow.

Figure 19

Check
Is gas supply off? Is the Front
burner on?
Is fuel hose bent or kinked?
Inspect the Weber Spider Stopper
Guard for possible obstructions.
(Blockage of holes.)
Does burner light with a match?
Igniter
38
Cure
Turn supply on. Light front
burner.
Straighten hose.
Clean Weber Spider Stopper
Guard. (See Section "Annual
Maintenance.")
If match lights burner, check
igniter (see below).
Venturi/Burner
Electrode
Igniter wire
Figure 20
1/8 to 3/16 inch gap
Figure 21