Champion Ultralight Portable Generator

UPDATE 11/23/21-(scroll down for original review) For the first 30 hours with the 2nd generator I thought I was good. Had minmal oil in airbox and no smoking. After 30 hours are when my problems started. Was running it all night on eco mode to run a fan in a cabin and woke up the next day to it running really rough. Spark plug was fouled and covered with black residue. Cleaned it and ran it the second night, started out fine but then spark plug fouled and could not keep running. I am now at 48 hours and the generator will not handle a load without putting tons of smoke. I notice this smoking problem is especially bad after running on eco then switching to normal. I believe excessive oil is getting sucked into carburator through the crankcase ventilation system. Did some tests after this trip and the smoke did seem to clear up after running it on full power for 30min. but im disappointed it won't run in eco without fouling the plug. I bought this originally for the quiet eco mode but if I can't even run on eco this is almost worthless. Maybe there's some good ones out there but I've gotten 2 duds in a row. Will never buy champion again! I stand by my original review. I know it's tempting because of the now 3 yr. warranty but if you get a dud dealing with the hassle of trying to get a new one is not worth it. Customer service is a joke. UPDATE 4/22/21-about 6 weeks ago I finally got a replacement unit. I called the service number and after nearly 2 hours on hold I talked with someone who tried to convince me that the smoking issue and oil in airbox was normal. After arguing for about 15 minutes I was finally told to take the unit to a repair service center in my area. It took a week for the repair shop to tell me that nothing was wrong and it's not leaking oil or burning oil. Well i got it back and it was still leaking oil into airbox and burning oil. I took it back again and they finally agreed to talk with champion about sending me a replacement. It is very sad that the customer has to go through this process just to get a replacement unit. Terrible customer service. If your unit has problems be prapered to put up a fight with customer service and take it to a repair center. Consider buying something else. All of this said, the new unit doesnt seem to smoke (yet) but still getting some oil into airbox. I can live with some drops of oil in airbox as long as its not burning oil. Will not buy a champion product again. (Original review) Do not buy! Apparently there is a major defect with the current batch of model # 100692 generators! I ordered on Dec 31st 2020 and did not start it up until a few days ago. I ran it for 2.5 hours with less than 50% load and noticed smoke coming from it whenever it reved up or when under load. I stopped it and opened it up and the inside of the airbox was coated with oil. I cleaned it up and ran it again for another 2.5 hours with less than 50% load per instructions hoping this issue would clear up after the 5 hour break in period was complete. The problem got worse. I have emailed customer support but it's been a few days and I have not heard back. I would highly advise NOT getting this generator until Champion works out their current quality control issues. other people have started to report very similar issues in the last few weeks. I am extremely dissapointed and frustrated because this thing had good reviews. I researched generators to death and thought this was the best deal out there. I got the impression Champion was better quality than other brands with similar generator styles but apparently not. Should have probably gone with the cheaper WEN 2000w model. I repeat, DO NOT BUY!