1994 MAZDA MPV Engine And Engine Cooling Problems

LIFTERS & ROCKER ARMS REPLACED 3 TIMES - CARBON BUILD UP WAS NEVER FIXED CAUSES ENGINE TO NEED REPLACEMENT. *AK

THIS PROBLEM WITH THE LIFTERS HAS BEEN REPORTED TWO SEPARATE TIMES. BOTH TIMES WE WERE GIVEN A MAJOR RUN AROUND IN ORDER TO GET THIS ISSUE TAKEN CARE OF. ON THE FIRST VISIT WERE TOLD THAT KNOCKING WAS NORMAL FOR A ENGINE TO DO. WHICH I STRONGLE DISAGREED WITH. AFTER GOING INTO THE ENGINE IT WAS FOUND THERE THERE WAS SOME COLLAPSED LIFTERS. SOON AFTER THE REPAIR THE PROBLEM RESURFACED, THIS TIME SPACERS WERE INSTALLED. I WAS TOLD THAT NOT ENOUGH OIL WAS REACHING THE LIFTERS. AFTER THIS THE KNOCKING WAS GONE FOR A LONG PERIOD OF TIME AND I THOUGH THE PROBLEM WAS TAKEN CARE OF. UNTILL WE MOVED TO GEORGIA IN JULY OF 98 THE PROBLEM HAS BEEN WITH US UNTILL PRESENT. I CAN SAFTLY SAY THAT I TAKE VERY GOOD CARE OF THE VAN THE OIL IS CHANGED ON A 2000 MILE CYCLE SO I WOULD THINK THAT THE OIL SHOULD BE ABLE TO REACH THE LIFTERS FINE. EVEN THOUGH I WAS TOLD BY THE MAZDA DEALER THAT THE KNOCKING NOISE WOULD NOT CAUSE DAMAGE TO THE ENGINE, I HAVE TO DISAGREE. THE CAM SHAFT HAS TO HAVE SOME KIND OF WEAR AS WELL CONSIDERING THATS WHAT THE PUSHES THE LIFTERS UP.

-ALMOST EVERY TIME WE START THE ENGINE, A VERY LOUD CLACKING NOISE PERSIST FOR A FEW MINUTES AND THEN AFTER THE VAN IS WARMED UP THE CLACKING SOUND SUBSIDES TO A MINIMAL NOISE LEVEL BUT IS NEVER THE LESS STILL APPARENT. AT FIRST " STARTS" IN THE MORNINGS IT SEEMS TO BE GETTING LOUDER. IT SOUNDS LIKE THER IS NO OIL IN THE ENGINE AND THE VALVES ARE JUST CLICKING AND KNOCKING LIKE CRAZY. I CHANGE THE OIL EVERY 3-4000 MILES AND MAKE SURE IT IS CONTINUALLY FULL. I CALLED THE MAZDA MAINTENANCE DEPARTMENT AT METRO MAZDA, 1087 I-20 WEST FRONTAGE RD., JACKSON MS, 601-944-1333 AND WAS TOLD BY ONE OF THE MECHANICS NOT TO WORRY ABOUT IT , BECAUSE MOST OF THE MPV'S HAVE THAT PROBLEM.

SPRING INSIDE ENGINE LIFTERS GAVE OUT.CAR WAS UNDER WARRANTY.CONSUMER CONTACTED DEALER. *AK

ROCKER ARM/LIFTERS ARE NOISY, CONTACTED DEALERSHIP, RECOMMENDED REPLACING ALL LIFTERS, COST BET. $850-$1200.

HYDRAULIC LASH ADJUSTERS WERE IMPROPERLY DESIGNED AND RESTRICT OIL FLOW.

ROCKER ARM AND SHAFT REPLACED RESULTING IN ENGINE NOISE, HOWEVER CARBON BUILD UP STILL PRESENT.

LIFTERS IN UPPER VALVE TRAIN MAKE CLICKING NOISES. *AK

LIFTERS IN UPPER VALVE TRAIN ASSEMBLEY MAKES CLICKING NOISE.

CRACK IN CYLINDER HEAD PISTONS INOPERATIVE. PLEASE EXPLAIN OTHER PROBLEMS. TT