Forum Discussion
Joe417
Sep 26, 2014Explorer
I measured and fixed a gas issue with my system this past weekend. Generator was taking several tries to crank. Frig wasn't cooling good when on LP (maintaining only 45 degrees). Everything was working good on 12V and 120 AC. Several on RV.net said was low LP pressure. My regulator was at about 8" WC. Replaced it and "new" regulator was at 14" WC. Took it back and second new regulator was set at 12" WC with no flow and dropped to 11.5" WC with all three stove eyes on high. This was dead on what most say it should be.
It is very cheap to make a U tube manometer. I bought about 10 feet of clear tubing at Lowe's. Mounted it on a piece of plywood with a few screws on either side of the tube with free leg about 3 feet long. Couple of drops of food coloring in some water. Fill the tube until you have about 12" of water up each leg of the U tube.
Mark the level of the water in the 3' leg at rest and every half inch above that for about 8 to 10 inches. The actual measurement is the difference of the water levels in the two legs of the U tubes but you get the same info by measuring one leg and doubling it. (a good measurement will be about 5 1/2" measured or x2 is 11" of water column.) (It doesn't have to be exact, just close.)
Connect the longer leg of the tube to the output you want to measure. You'll have to come up with what ever adapter is needed to fit each output.
Since you are having issues with all appliances, I would start at the regulator work my way away from the bottles to find the blockage. If you have a low point in the lines, I've heard some have found oil accumulating and blocking the flow.
Be careful, it is gas.
It is very cheap to make a U tube manometer. I bought about 10 feet of clear tubing at Lowe's. Mounted it on a piece of plywood with a few screws on either side of the tube with free leg about 3 feet long. Couple of drops of food coloring in some water. Fill the tube until you have about 12" of water up each leg of the U tube.
Mark the level of the water in the 3' leg at rest and every half inch above that for about 8 to 10 inches. The actual measurement is the difference of the water levels in the two legs of the U tubes but you get the same info by measuring one leg and doubling it. (a good measurement will be about 5 1/2" measured or x2 is 11" of water column.) (It doesn't have to be exact, just close.)
Connect the longer leg of the tube to the output you want to measure. You'll have to come up with what ever adapter is needed to fit each output.
Since you are having issues with all appliances, I would start at the regulator work my way away from the bottles to find the blockage. If you have a low point in the lines, I've heard some have found oil accumulating and blocking the flow.
Be careful, it is gas.
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