I have a '84 4cyl. Stringer OMC. I had the impeller replaced by a marine mechanic and have had it out a couple of times on the lake (with no problems), but now I am experiencing the following problems:<br /><br />1) When I shift into forward the engine stalls <br /> under low throttle. The engine will <br /> pickup under heavy throttle through. <br /><br />2) When returning to neutral, the shift cable is <br /> returning with more difficulty. <br /><br />3) Upon returning to neutral, the shift cable <br /> does not return the engine rpm's back to <br /> idle range. I can do it manually by <br /> adjusting the cable on the side of the engine.<br /><br />Any thoughts on the problem is greatly appreciated. Thanks!