Re: 1991 Blue Bird TC2000
I came into this piece of the thread late, but are you SURE you have unimpeded lines to the tank? If it is dumping out the exhaust, it could be that it has pressurized the line to the max (120 psi or whatever) and then all the rest is SUPPOSED to go out the dump side. If you take the line loose going INTO the tank, will air go through? If not, and you take the line off in the engine compartment, can you use a shop compressor to blow backwards through it?
I'm sure you have thought about it - I'm just pointing out the obvious. We all KNOW that there is no way you could get a clog in the middle of a line with no valves, etc, right? (Been there.... done that.... wasted days and lots of good swear words).
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