I was speaking with the owner of a sizable pumping franchise who told me how, in the early days, they would use the truck engine to pull the vacuum to empty septic tanks. He also said he blew a couple of engines by not shutting it off before it sucked sewage right into the carburetor and slammed the pistons.
We have all made costly mistakes, and before modern equipment came along, we did whatever we had to do, didn’t we? Early advice to pumpers went something like this: “Remember, always park the truck downhill from whatever you are pumping so gravity
