Wanna know how I found that out?
Had a1959 Pontiac Bonneville (in 1967) that was overheating on me, and driving me nuts since all the usual fixs didn't help. I was a young squirt just out of college at the time and living in a rented room (read: no garage or tools to speak of). And I was working in Philly, in the heat of summer, and got stuck in traffic now and then on the Sure-Kill Expressway. Yuck!
One memorable night, while reving the motor from under the hood, I just happened to see that *^~~# lower hose clamp shut from vacuum. Eureka! Problem solved, and I've never forgotten it.
Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell