---- Michael Snow <slowmachine82@GMAIL.COM> wrote:
> I want a Vitrifrigo/Truckfridge badly, but am leaving Saturday for
> Niagara Falls with or without a working fridge.
>
> Sitting on a milk crate, connected to my barbecue tank and regulator,
> the fridge runs fine on propane. The flame appears blue through the
> sight hole.  At the right viewing angle I can see what I think is the
> tip of the thermocouple glowing red.
>
> When installed in my '82 Westy, the flame is partly yellow and goes out
> 5-10 seconds after igniting.  Guessing that I might have a regulator
> problem, I swapped the old Marshall 290 for a new one.  I verified 11"
> water column using a home-built manometer.  Condensation drain is closed.
>
> I have cleaned a bit of accumulated dust from the combustion chamber and
> blown compressed air through the fridge intake/exhaust tubing.
>
> Does yellow flame indicate inadequate air supply?  What am I overlooking?

Yellow flame can indicate inadequate air supply, or inadequate exhaust (a partially blocked exhaust that prevents venting would also prevent air flow, and so cause poor combustion just as a blocked air intake would).

So, maybe check that?

mcneely