[Dive:
had that happened to me I would've gone back and punched the maintenance guy(s).
These are supposed to be sealed with every precaution that you would use to hook up Nat'l gas in your home and then some. IF lighting a cig caught it on fire , then there was surely a leak and finding those are just as easy.
We used to add propane to single barrel carb'd trucks down home all the time and using soapy water was one of the easiest ways to find leaks.
The doubled flared connections took a special flaring tool but was pretty easy to use.
Would be interesting to find what problems they're having. Once installed other than routine maintenance these just run. A little bit of a hit on acceleration, but oil at least on Propane was always clean even past 6000 miles.
We used de-bounced solenoids to turn one off and the other on along with using electric gasoline fuels pumps rather than the mechanical ones.
Cheers;
Bruce S
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the one that caught fire was in north GA. you would have thought that the officer would have smelled the leak for some time. they are investigating it still. the old ones we had in our fleet were first gen. the newer ones use a different fuel rail plus the gas rail so to make a duel fuel system. the car starts with gas and as soon as the CNG system warms ( about 1-2 mins.) it converts to CNG. this made for a more reliable system plus added economy of fuel. less residual oil from the CNG. All our units get serviced every 3000. oil can still look clean but the oil may still have broken down . with petrol cars exceeding speeds and rough driving . we can't take the chance. got to keep them running 24-7.
john