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Tech was out today to perform the scheduled maintenance. Pressure under load checked out fine. They replaced the plugs (as part of maintenance) and the popping was still observed. The more load, the worse the backfire. In consultation with someone at his company or Generac, he is stating the...

Um, no.....

I will start with the propane company and then the generator company. Thank you all for your help!

Hereford

I can only say when it pops, the lights flicker. It doesn't seem to be load dependent, but I could be wrong. I did buy a gauge for trouble shooting the bad upper regulator, but I'm not really comfortable f-ing with propane or AC power.

mm08822, you're in NJ, I'm in Berks Co PA, walking distance to Lehigh Co.....I should pay you to stop by :)

No, the red one at the tank was installed in 2018 when the generator was installed. The upper green regulator was replaced 2023, when the original wouldn't control the pressure....went high, not allowing the gas solenoid to open at start up

Could it have anything to do with humidity? Load shouldn't be an issue, since it's 38 KW.

Who would I want to come look at this? The generator maintenance company? A propane company? It back fired a few times while I'm working on this drainage. Either way I'm out coin, as the warranty ran out in 2023.

Further down the slope.

Yard is very sloped. The hill leading down to the tank doesn't help. Level shown in picture is level.

It's been running fine since bailing and digging the trench. Still working on making sure I have the correct pitch...

Not since the regulator was replaced.

I'm only installing the drain for the riser.

Got the trench mostly dug. Need to go get PVC, fittings, and some pea gravel. Glad my property is sloped.

5-10 minutes after bailing the water out, it seems to have stopped popping.

Is it safe to throw an electric sump pump in the riser?

The regulator is up above the water level by a few inches and I don't see any bubbles. I just baled it out again (I did shut the unit down from about 1030pm-0430am. The problem I had with that was the septic pump was off and I guess the bottom tank, by the sand mound was over full, so leaving...

This is exactly what the issue is. After pumping out the shroud, the issue stopped. A half hour later, it started doing it again....the water level in the shroud was over the valve assembly again. I pumped it down again & it stopped.

New issue..... After heavy downpours today, the generator would pop, like back firing, resulting in the lights flickering, etc. I 'think' I traced the issue to the propane tank shroud filling with covering the fill assembly at the tank (see photo). Since I pumped the water out, below the...