I have a brand new Weber 670S and put it together....the ignition will fire and I get a 6 inch flame, but the burners don't light....and the flame goes out when I release the knob...
Since the main burners and the rear infrared burner (if so equipped) comes already installed, I don't think your assembling it is the problem. It's probably the grill's gas regulator that is giving you the problem. That's assuming you are following the manual's instructions on how to light the burners, the first time. For now, Ill assume you did. If you open the gas tank valve to fast, it shoots high pressure to the regulator & locks it up.So, to solve the problem, follow the directions below:1. Turn the gas tank valve OFF and disconnect the hose from the tank.
2. Wait 5 minutes and reconnect the hose to the tank.
3. Open the tank valve VERY, VERY SLOWLY (Slow motion, slow).
4. Once the tank valve is fully open, light the burner farthest from the tank first and set the burner
control knob on HIGH. Does the flame height look correct for being set on HIGH? If so, light
the remaining burners the same way. Do all the burner flames look correct? If so, you solved
the problem. Remember, to always open the tank valve Very, Very Slowly.
If that didn't solve the problem, you will need to replace the grill's
Hose/Regulator Assembly (It's 's not under warranty). It runs about $30.00 at any home center or
hardware store that sells grills & accessories. If you replace it,
turn the tank valve ON Very, Very Slowly.
Hope this helped you to troubleshoot and solve the problem. Happy Grilling!! And thanks for choosing FixYa. Read More At : Summit S-670 Gas Grill...