yrusoslo wrote:
A true jake brake is electrical components, a toggle switch on the dash,a switch at the foot throttle. When the switch is on and the foot pedal is disengaged the electric solenoids in the rocker box hold the exhaust valves open, so the compression & heat isn't there to fire the fuel. Thus this is the noise you hear out the exhaust pipe. I never hear of flames coming out of the exhaust. Only back in the day when old timers would mix a ratio of gas to diesel in the winter, to prevent gel up.
I'm not sure I understand that at all. If the compression and heat isn't there to fire the fuel, isn't that simply called coasting? Your description sound like it would result in zero slowing power. Perhaps the exhaust valve is closed on the downstroke to create a vacuum? Where is the backwards braking power introduced at the engine?