I have a 94 Lexus es 300 that has a knocking noise and is using a lot of water can that knpcking noise be the water pump

Asked by Mar 05, 2016 at 12:22 PM about the 1994 Lexus ES 300

Question type: Maintenance & Repair

Loud knocking noise and excesive water use

1 Answer

83,595

I doubt it, a knock usually is a rod bearing. Sounds like head gasket leaked and coolant got into the oil wiping out the bearings. That could be were the coolant went. Check the oil, it would be over full.

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