Compression Pressure

1. Ensure battery is fully charged and coolant temperature is below 95°F.
2. Disconnect master relay and fuel pump relay from fuse box located at rear right corner of engine compartment.
3. Remove spark plugs, then install compression tester adapter tool No.11-0-166, or equivalent, into spark plug bore by hand.
4. Connect compression gauge tool No. 11-0-162, or equivalent, onto adapter.
5. Fully depress accelerator pedal and operate starter motor until compression pressure reading is at maximum.
6. Correct compression specification is 145-159 psi. Cylinders should not deviate by more than 6 psi.