Now, why didn't I know about that CO2 trick? I ran a Diesel shop/road service for a lot of years, but this is the first time I've heard that one. Just goes to show, even an old head can learn, if he's willing to listen!
Drivers who tried to change their own fuel filters used to keep my electric priming pump busy pretty regularly. One guy had spent 4 hours tinkering with a fuel system before he called me, and I had him running in 15 minutes!
If you have to use the emergency air flap, do it before the engine gets up a good head of speed. I've seen the flap pull partway through the housing, and allow enough air past it to keep the engine running at moderate speed. There is a big engine rebuilder in San Francisco, where they used to dyno-test all their engines before shipping them out. The young technician running the dyno got panicky when an engine stuck an injector rack and ran away, and this one didn't have the air shutdown housing installed. He grabbed a big handful of rags amd threw them into the blower. The rags wedged the blower rotors apart and blew pieces of the blower housing all over the engine test room like shrapnel! Yes, the engine stopped, but it was scrap metal by then!
Jerry
