Definition of quantal. 1  1 [Latin quanti how many, plural of quantus] : of, relating to, or having only two experimental alternatives (such as dead or alive, all or none) 2  2 [quantum] : of or relating to a quantum.
3. Engine movement. Another symptom of bad or failing engine mounts is an engine that moves in the engine bay. If the engine mounts are in good condition, they should be able to secure the engine firmly in the engine bay.
FAILURE ANALYSIS REPORT ENGINE FAILURE CAUSES RAW GAS Intake scored Heavy exhaust score Caused by running the engine on raw fuel Heavy dry piston score (Wraps around much of piston) Score often wraps around piston even to intake side Crankcase often dries out when opened up _____ OVER HEATING _____ Intake side heat discoloration Exhaust discolored & scored Can be caused by blocked engine cooling air intake Other causes include heavy engine load