My forklift has been acting up lately but I thought it was just due to the dropping temps. Finally pulled my head out of my but and realized there were bigger issues so I pulled it into my heated shop. After letting it warm up I fired it up and let it run at a slightly elevated idle. Within 5 minutes I could smell smoke so I went to check on it and I could hear and smell it was way too hot and the evaporator was covered in frost.

Before I noticed the overheating issues, the forklift would start and run fine for a little while and then it would die (acted like it wasn't getting enough fuel). It would also really smell like propane after it died. Let it sit for a while and then it would start again.

Pictures showing smoke and evaporator
https://imgur.com/a/nfxGfbR