Engine - Coolant Loss

Number: 84-224

Section: 6A (VI)

Date: Dec., 1984
Subject: COOLANT LOSS


Model and Year: 1984 CITATION, CELEBRITY, AND CAMARO VEHICLES WITH 2.5L L4 ENGINE (VIN CODE R AND 2)
TO: ALL CHEVROLET DEALERS


A comment of coolant loss on some 1984 2.5L engines may be the result of a casting separation in the lifter bore area.

Cylinder Block:

If pressure testing shows no visible evidence of coolant loss, remove the cover from the valve lifter area and inspect the casting just above the lifters (see illustration).
With the engine warm and pressure applied, coolant should be visible using "black light".

If the condition is evident, the cylinder block will have to be replaced.

NOTICE: Carefully inspect the camshaft and lifters in the area of the separation to insure no damage has occurred from dilution of lubrication.