1998 Cadillac Catera Q&A
1998 Cadillac Catera Question: OIL LEAK
MY CATERA CYLINDERS IS FILLED WITH OIL. - Visitor
The spark plugs are down a well in the center of the valve cover on top of the engine. When you remove the spark plug wires to replace the spark plugs, if you find oil in the plug well tube or on the plug wires the valve covers need to be removed to replace the spark plug tube seals. - patrick mannion
The Catera often experiences oil leaks from the oil cooler and/or valve cover gasket. The thermostat seal and/or the water pump may...
losing oil from top causing smoke