The Webastos got off to a great start, then failed in different ways after only a couple weeks. Was it due to the stock air filters, or the WMO? That fuel concentration was pretty minimal to start with. The air filter supplied with the units is actually no filter at all, so I added some foam media to at least keep the bugs out. Considering we’re in the middle of winter, I probably should have just left them alone.
Only the #1 unit was sooted up, so my preferred theory is intake restriction. The other one looked fairly good for the 20-some hours of runtime it had on it. Still not sure what’s wrong with it. The injector sleeve gasket was missing, so maybe that let it run lean. Ironically, they were beginning to get hard to start just a couple days before the good air filters showed up.
Unit #1 is running on max for a couple hours this morning, after cleaning and re-installation. Extended (I)nitial (O)perational (T)est and (E)valuation periods usually spelled doom for the new systems I worked in the Air Force. Fortunately I have the flexibility to manage this one however I see fit, and it’s kinda fun to tinker with.
