For 1990-2009 cars

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
1 | Are dull thuds or knocks heard with every engine revolution? | -- | Go to Step 2 | System OK
2 | Measure the oil pump pressure. Is the oil pump pressure low? | -- | Go to Oil Pressure Diagnosis and Testing | Go to Step 3
3 | Measure the crankshaft end play. Does the crankshaft end play exceed the specified values? | 0.070-0.302 mm (0.0027-0.0119 in) | Go to Crankshaft Replacement | Go to Step 4
4 | Inspect the crankshaft journals. Are the crankshaft journals out-of-round? | -- | Go to Crankshaft Replacement | Go to Step 5
5 | Inspect the belt tension. Is there excessive belt tension? | -- | Go to Timing Belt Replacement | Go to Step 6
6 | Inspect the crankshaft pulley. Is the crankshaft pulley loose? | -- | Go to Crankshaft Replacement | System OK