Dont forget vacuum leaks. Modern vehicles have more holes than a golf course.
“Wax on, wax off!” Or so said Mr Miyagi 🇯🇵Mrs Grumpy inspected my handiwork in having washed her car yesterday and, most predictably, informed me that I had "missed a bit."
In reply I invited her to go and tell someone who cares more than I, because I'm still engrossed in reading 'The Three Bears.' Obviously. View attachment 294389
Those "smog" pumps were a wheeze worthy of Smokey Yunick if I understood them properly. In order to reduce the concentration of emissions from the exhaust an air pump was fitted which pumped fresh air into the exhaust gases to dilute them. Brilliant! The actual amount of pollution increases because of the extra work done, but the concentration - which is what was measured - reduces. There was some sort of psuedo carp about how it worked but that was just a smoke screen.so heavily smog tuned the under hood had more hoses and pumps than Jacques Cousteau and the mighty Calypso.