3000GT VR-4 AWD V6-2972cc 3.0L DOHC MFI Twin Turbo (1998)
<DOHC - Non-Turbo>:
minimum 959 kPa (139 psi) [250 - 400 r/min]
DOHC - Turbo>:
minimum 792 kPa (115 psi) [250 - 400 r/min]
(8) Measure the compression pressure in each of the cylinders and check that the difference in compression pressure between the individual cylinders
is less than the limit value.
Limit: maximum 98 kPa (14 psi)
(9) If there is a cylinder in which the compression pressure or pressure difference is beyond the limit value, pour in a small amount of engine oil
through the spark plug mounting hole, and repeat Steps (7) through (8).
1) If the small amount of oil poured in causes the compression pressure to rise, then it is likely that either the piston ring, cylinder wall surface or
both are worn or damaged.
2) If the small amount of oil poured in does not cause the compression pressure to rise, then valve seizure, poor valve contact, or leakage from
the gasket is suspected.
(10) Re-connect the crankshaft position sensor connector.
(11) Re-mount the spark plugs and spark plug cables.
(12) Erase the diagnostic trouble code using the scan tool or disconnect the negative (-) terminal of the battery, leave it disconnected for more than 10
seconds, and then re-connect it.
NOTE: This erases the trouble code due to the disconnection of the crankshaft position sensor connector.