36 substantially opposite the space from the center of the opening 28 these walls and baffle means 19 funnel the returning air flow and particulate to and against the bulkhead 14 for farther travel into the eye of the impeller as shown by reference to fig3 and 4 when the multi directional impeller 10 is rotated in a counter clockwise direction the air flow created by the high speed rotation of the impeller 10 draws or sucks up air from in front of the bulkhead 14 through the central opening 13 in the bottom plate 13a into the eye 42 of the impeller 10 from where it is accelerated and discharged radially outwardly against the exposed end of a mounted spark plug the discharge of air and particulate in the counter clockwise direction creates a violent circulation of air and particulate by tangential discharge of the air and the particulate through the multidirectional impeller 10 as shown in fig1 and 5 the impeller 10 is comprised of a plurality of impeller vanes 11 attached to the bottom plate 13a and extending upwardly to the top of the impeller 10 as previously discussed the impeller 10 includes a plurality of low profile vanes 21 fig5 starting at the eye 42 of the impeller and extending outwardly toward the vanes 11 when the impeller 10 is rotating the low profile vanes 21 accelerate the particulate from the point where it enters the eye 42 of the impeller 10 to a surface velocity that is compatible to enter the discharge vanes 11 thereby reducing the initial shock of the particulate entering the vanes 11 this minimizes wear on the internal portion of vanes 11 thereby increasing the efficiency and prolonging the life of the impeller 10.