So I finally got time to replace my fuel pump, that went south during the Round Up. Well, at least I thought it was the fuel pump. Simple enough swap and replace, no issues there. But the new pump also not pumping.
After confirming all the obvious... fuel lines correct... Yes, Fuel in tank... Yes, fuel getting to pump... Yes. I even filled the carb side of the fuel pump, thinking a prime would help get things started, but the installed new pump not pumping. So... went over and grabbed my old pump, gave the arm and couple of pushes and sure enough its sucking and pushing no problem.
Pulled the pump off and immediately notice the push rod was inset well into the plastic flange. Wish I would have thought about that a while back. I take a wrench and start turning the engine, making several full rotations and push rod never moves? Pulled the push rod out and the lower tip is worn flat and wide. I put the calipers on it and 92mm???? (alternator style pump rod should be 100mm).
I dig out my generator pump push rod (108mm confirmed), drop it into the hole, but it doesn't feel like its sitting down right, turn the engine and no movement?
So, I'm thinking something must be wrong with the cam that drives the rod? Tried to inspect it with a mirror and flash light, but can't see pshaw.
Has anyone experienced anything his and can offer any suggestions?
I know I can just replace the mech with a electric, but I would really like to understand what is wrong here, instead of just ignoring it.
Any help, comment or suggestions, would be greatly appreciated.