The truck is hopefully an exhaust leak that I will work on this weekend that might be the root of the problems, I will see when I fix it.
The feature is largely together now, the pump can go in later and I will likely use it to pump the dirty water out of the feature as it will get dirt in it when the river rock goes in. That will be the harder part, trying to clean the river rock as best I can before shoveling it all back in.