Jake brakes are not about stopping but about being able to go down long grades as we have in the west . You can decend without them but at a much slower pace . They help reduce brake wear too. Jerry
Speaking of jake brakes. Just when are jakes activated ? <release of gas pedel,brake switch,the toggle switch?i have a toggle on/off and at idle i turn them on and they activate meaning they make the valveS work! and then the engine soon after (5 seconds)stall is this normall?? maybe bad rings??