POTENTIAL CAUSE(S)

CHECK THESE FIRST:

1. THERMOSTAT STUCK OPEN (LOW ENGINE OPERATING TEMPERATURE)
Replace thermostat.

2. ADVANCED FUEL INJECTION TIMING
Have fuel injection timing professionally retarded.

CHECK THESE NEXT:

3. LOW ENGINE COMPRESSION
Have engine compression professionally improved.

4. FUEL CONTAMINATION
Use higher quality fuel.

CHECK THIS LAST:

5. EXCESSIVE OIL CONSUMPTION
Have cause of excessive oil consumption professionally corrected.