:sly:I NOTICED FOR A WHILE THAT MY 93 K1500 4.3L IS LEAKING VERY LITTLE COOLANT FROM THE FRONT PART OF THE INTAKE MANIFOLD. HAS BEEN THAT WAY FOR A WHILE NOW, NOT LEAKING ENOUGH TO MAKE ME RIP APART THE MANIFOLD. HOWEVER JUST RECENLY THE TRUCK STARTED TO RUN LIKE CRAP. SPITTIN LIKE CRAZY WHEN A LOAD IS ON THE MOTOR IF U STAY IN NETURAL AND GIVE IT GAS IT IS FINE WHEN I GO TO TAKE OFF IN 1ST GEAR OR ALL THE GEARS AT THIS POINT, IT BECOMES VERY HESITENT. I REPLACED JUST ABOUT EVERYTHING UNDER THE HOOD SENSOR WISE EVEN FUEL PUMP AND FILTER. I AM STUCK AT THIS POINT. I WAS WONDERING IF MAYBE THE LITTLE LEAK IN THE MAIFOLD HAS ANYTHING TO DO WITH MY PROBLEM CAUSING THE MAP SENSOR TO FAIL. I SWAP THE MAP SENOR OUT STILL NO PROGRESS. OR MAYBE JUST THE ECM GOING BAD???? IT'S FUNNY WHEN IT 'S DEAD COLD IT RUNS WELL. I CLEANED THE EGR VALVE, SHOULD I REPLACE IT? WHAT DO YOU THINK???:crying:

Replace the intake gaskets. ran across the same problem with my 91. repaced gaskets after pulling intake of gasket were worse than i thought.