POTENTIAL CAUSE(S)

CHECK THESE FIRST:

1. CLOGGED FUEL FILTER
Replace fuel filter.

2. LEAKING INTAKE MANIFOLD GASKET
Have intake manifold gasket professionally replaced.

3. FAULTY FUEL INJECTORS
Have fuel injectors professionally replaced.

CHECK THESE NEXT:

4. INCORRECT INJECTION TIMING
Have injection timing professionally adjusted.

5. LOW CYLINDER COMPRESSION
Have cylinder compression professionally improved.

CHECK THESE LAST:

6. FAULTY INJECTION PUMP
Have injection pump professionally replaced.

7. INJECTION SYSTEM LEAK
Have injection system leak professionally repaired.