Climbers who discovered the body of Mallory on Mount Everest have sent a tissue sample for testing to prove conclusively the remains were those of the British explorer lost in 1924, an expedition official said on Tuesday.
ENGINE RUN-ON, DIESELING -- RO-101. DIESELING, that nasty tendency of an engine to continue to run on, coughing and sputtering, after the ignition is turned off and there is no more spark. Run-on by dieseling is caused by fuel in engine igniting without spark. Possible explanations: a.) Running winter fuel in warm weather.
During the intake stroke, the piston moves downward, drawing a fresh charge of vaporized fuel/air mixture. The illustrated engine features a poppet intake valve which is drawn open by the vacuum produced by the intake stroke. Some early engines worked this way; however, most modern engines incorporate an extra cam/lifter arrangement as seen on the exhaust valve.