Dodge RAM 1500 1998 Owner's Manual page 1444

DR
LUBRICATION (Continued)
Air Leak Detection Test Method
(1) Remove the PCV valve from the IAFM. Cap or
plug the PCV valve grommet.
(2) Attach an air hose with pressure gauge and
regulator to the dipstick tube.
CAUTION: Do not subject the engine assembly to
more than 20.6 kPa (3 PSI) of test pressure.
(3) Gradually apply air pressure from 1 psi to 2.5
psi maximum while applying soapy water at the sus-
pected source. Adjust the regulator to the suitable
test pressure that provide the best bubbles which
will pinpoint the leak source. If the oil leak is
detected and identified, repair per service manual
procedures.
Fig. 27 Engine Oil Lubrication System
refer to the section, Inspection for Rear Seal Area
Leak.
and remove the air hose and all plugs and caps.
Install the PCV valve.
a suitable solvent. Drive the vehicle at various
speeds approximately 24 km (15 miles). Inspect the
engine for signs of an oil leak by using a black light.
INSPECTION FOR REAR SEAL AREA LEAKS
source of an oil leak in the rear seal area of the
engine, a more involved inspection is necessary. The
following steps should be followed to help pinpoint
the source of the leak.
(4) If the leakage occurs at the rear oil seal area,
(5) If no leaks are detected, turn off the air supply
(6) Clean the oil off the suspect oil leak area using
Since it is sometimes difficult to determine the
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