Switched from the green propane canisters to the proper hose for the Webber to use on a 5lbs propane tank. No extra changes were done. I light it, it works but the flame is blue and very low, just stays close to the burner. After a few minutes, it gets normal.I've done this a few times, tried cleaning the burner, it's clean and still does the same. No problem with the green canisters. What am I doing wrong?

The safety "flow" check valve in the propane tank has tripped.Open the valve on the propane tank very slowly. This usually prevents the safety valve from tripping.When mine does this I turn off the grill close the propane tank then reopen it slowly and relight the grill usually works every time.If that doesn't work turn off grill close propane tank valve disconnet hose from tank. Turn on grill but do not light let the propane bleed off. Close grill valve reconnect hose, open tank valve slowly, open grill valve and light. Should work.Steve

Thank you so muchI will try this tomorrow :)))

I just open the valve on mine when I get to the campground and close it a couple of minutes before the last meal is done. As long as you open it a half hour or so before cooking there should be no problem. There's usually enough propane in the hose after closing the valve to burn for a bit.

Actually, the excessive flow device is located in the Acme fitting/Hose assembly and not the tank.

I wonder if it's because the hose dia. is too small? We've had that problem with our Coleman Roadtrip grill which we run directly off the low pressure line under our TT (removed regulator at the grill) when we had a 20' 1/4" hose. I changed out the hose for a 3/8" hose of the same length and it works better.I used to notice that when I first started the grill with 2 burners running at full heat, the flame was blue and strong. Then the flames gradually slowed and turned yellow on the tips. I'm no expert on propane but I'm guessing that the 1/4" hose was charged to the full low pressure level at first, then couldn't keep delivering that pressure at max. flow to the grill.

Webber Q 100 | Good Sam Community

SoundGuy
Explorer
Jun 07, 2015
While the OP's issue seems to have been resolved other Q100 / Q120 owners should be aware that for a time the regulator used on this Q series of Weber grills failed at an alarming rate, displaying the same symptoms the OP described. I replaced the regulator on my own Q100 twice under warranty, again on my current Q120 also under warranty, even recently replaced the regulator on my Q220 twice now even though it's a different model regulator. I suspect these regulators were all manufactured in the same Chinese factory and all (for a time) suffered the same failure rate.

Any Weber owner should also note that the tank > grill adapter hose sold by Weber has a noticeably larger opening on the 1"-20 threaded fitting that screws into the grill's regulator than do third party hoses that otherwise "look" the same ... so if gas flow is an issue with your Weber that too could also be a reason.
phays
Explorer
Jun 07, 2015
Try this
connect larger tank to weber q

I made this change and no longer have a problem using a larger tank. I also purchased an adapter that fits the connector that goes to the tank that converts it to the small one pound bottles so I can use the smaller bottles in an emergency or when I don't want to pack a larger bottle along.
Chinolbz
Explorer
Jun 08, 2015
I believe those of you trying to use the grill off of your trailer are using a LOW pressure line that is not compatible with any grill with a built-in regulator. It must be hooked into a HIGH-pressure line before the tanks regulator to work correctly. There are ways to convert grills to work on LOW-pressure. Search the sire for how to do. Good Luck! Chino.

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