Forgot to say. As my other posting, they often whistle if on the way out. Mine did. Another I've seen didn't. One way to test is to shut down your gas supply, burn off what you have left and see if that cures it. There's anotehr test but you'll need a proper Kpa level manometer for this.
I am a mere amateur on CNG / LPG systems generally, but because I've played about with mine and 4-5 others lots, I reckon I have my head round these Necam types.
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Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl**dy blah."]
Last edited by CNGBiFuel; Jun 27th, 2016 at 08:27.
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