Reindeer
11-12-2005, 07:04 PM
Well, we got it altogether and have run the turbine 3 or 4 times; but it seems like sucessful startups are almost by accident, with long dry spells between sucessfull tries. When the turbine does run it is a thing of beauty. It responds well to the throttle; except if the throttle is advanced, or retarded, too rapidly the engine flames out. But there seems to be no basic problems once the turbine has started.
But getting the turbine to restart, after cool-down and a system reset, is a real chore; it seems as if it restarts almost by accident after many, many tries. Obvioulsy some parameter needs to be adjusted. At first we thought there was a problem in the LPG gas plumbing system, but we've gone through it and are now convinced that ii is now functioning properly. Also, the glow plug checks out ok.
We've checked the needle valve setting on the gas solenoid valve. Bergen instructions state the valve should be set at 4 turns open; Wren instructions state 1-1/4 turn. We've tried both settings, and every setting in between.
During the startup cycle, which we initiate by quickly pushing the throttle stick fully high, then fully low, and pushing the trim lever to fully high, the ECU does a glow plug check and the electric starter spins the turbine wheel to a maximum of about 7900 rpm for a very brief period. It goes through this starting cycle about 3 times before timing-out. Doing an immediate reset and retry, actually many, many times, proves to be unsucessful. Although 3 or 4 times it has actually started, almost as if by accident.
There must be some parameter that needs to be tweeked, but we are unsure what to do next. Any help and suggestions will be greatly appreciated!!! :arggg:
But getting the turbine to restart, after cool-down and a system reset, is a real chore; it seems as if it restarts almost by accident after many, many tries. Obvioulsy some parameter needs to be adjusted. At first we thought there was a problem in the LPG gas plumbing system, but we've gone through it and are now convinced that ii is now functioning properly. Also, the glow plug checks out ok.
We've checked the needle valve setting on the gas solenoid valve. Bergen instructions state the valve should be set at 4 turns open; Wren instructions state 1-1/4 turn. We've tried both settings, and every setting in between.
During the startup cycle, which we initiate by quickly pushing the throttle stick fully high, then fully low, and pushing the trim lever to fully high, the ECU does a glow plug check and the electric starter spins the turbine wheel to a maximum of about 7900 rpm for a very brief period. It goes through this starting cycle about 3 times before timing-out. Doing an immediate reset and retry, actually many, many times, proves to be unsucessful. Although 3 or 4 times it has actually started, almost as if by accident.
There must be some parameter that needs to be tweeked, but we are unsure what to do next. Any help and suggestions will be greatly appreciated!!! :arggg: