I had some spare time today, so l did a litle research and testing on the system.
I added a new lighting port-this way l can fill the hopper in the evening and light it fast and easy in the morning, plus its a bit easyer for my wife to light it. Less soot on the fingers.
I tryed to bypass a portion of woodgas to the air side of the automixer, so this way l compensate with small airleaks in the system and weak gas after longer idles.
The new restriction is holding up well.
I allso put off the gasifier air intake non return flap. I suspected it not working well for me at long idles when wacuum is wery small.
So l warmed up the gasifier and set the engine rpm to 3500rpm in neutral. Disconnected the injector fuel line to be sure and started to play with the new gas bypass valve. I found the automixer does set it self a bit lean, the bypass did a great job of correcting that! My refference was O2 sensor.
Then l let it idle. At first a puff of steam was rolling out the gasifier intake for a few seconds, all this steem wuld suffocate my engine at idle before when it hadnt had a chance to vent out. Then it idled well for a loong time. So this is good too.
Thain l drove to work. It was a pleasant ride, perhaps best so far. I allso stoped to buy some petrol, the car idled for about 5 minutes on wood and guess what?? I drove away on woodgas without much hasitation!
Slowly working on. Next step is hideing the hopper steam at cooldowns…