I think I may have a hole in a water jacket. pumps water fine when at idle speed, but exhaust comes out of the tale tale hole at 1/4 throddle. where should I look first? 93 model. no water in cyclinders dont think it is a head gasket. thanks
I WOULD START WITH THE IMPELLER AND WEAR PLATE ALSO INSPECT THE UPPER HOUSING CLOSELY AND BE SURE THE GROMMET FOR THE WATER TUBE IS IN GOOD SHAPE YOUR IMPELLER CAN PUMP AT IDLE WHEN WORN DOWN BUT NOT PUMP WELL AT WOT BUT EITHER WAY IS THE MOST LIKELY PLACE TO START IF EVERY THING IS GOOD WITH THE PUMP THEN I WOULD CHECK THE THERMOSTAT IT COULD BE CLOGGED UP OR ONLY OPENING PARTIALLY IF OPENING MUCH AT ALL
T COYOTE<br /><br />WATER JACKET ROTTED OUT HAVE SEEN IT <br />IF YOU CHANGE THE WATER PUMP IMPELLAR MAKE SURE STAINLESS STEEL WATER PUMP HOUSING IS FLAT AND NOT GROOVED USE TYPE M AHESIVE TO PLATE TO WATER PUMP HOUSING DO NOT US SILICONE MIGHT HAVE EXHAUST WATER PRESSURE LEAKING INTO WATER PUMP HOUSING CAUSING YOU THE PROBLEM
