i put new b valve and b coil in a freinds and it took care of his pump. it was doing same thing . anytime you start pulling out valves you should rinse in a little parts cleaner. blow off with air. and check to make sure they are moveing freely and not sticking.. a valve will not move as much as b and c then putt new o rings on if you have them.. a worn o ring can cause the problem .also put little oil on them and install slowly allowing o rings to seat and not tear on way in .. on my last post to you i said replaced b coil. i also ment the valve to ..was c valve sticking or bad seals or bad coil or connection sence you got it going right and left ...pm me i can help you trouble shoot it
Last edited by racer47; 01-26-2013 at 09:43 PM..