Engine Notes
- 1968 HIGH SPEED "BOOM" CORRECTION: May be caused by tubular strut from alternator to cylinder head. To correct, remove strut. Manufacturer recommends no strut be used.
- 1968 ELDORADO ENGINE TEMPERATURE DIODE LOCATION NOTE: Engine temperature diode on Eldorado models is located in a portion of the wiring harness that extends from end of left rocker arm cover to cowl. To locate diode, cut through taped loom of harness and trace along green-white striped wire until insulation and splice for diode is found.
- 1970 CADILLAC VALVE NOISE NOTE - If the valve train develops a tapping noise, the rocker arms may be moving from side to side on their supports. To diagnose and correct this condition, carefully place a screwdriver against each rocker arm retainer end tab. A noisy rocker arm will quiet when end tab is pressed against the arm. Repositioning end tab fore or aft, or bending tab inward to apply more tension may be necessary to eliminate problem. If retainer end tabs are not the cause, check for valve springs which may have been installed upside down; sometimes causing a valve train to be noisy.