71 - 02 - 00
Page - 71-07
Reissued: August 1, 1986
2H22
CHART 7101. TROUBLESHOOTING (ENGINE) (CONT)
Excessive oil consumption Low grade of oil. Fill with oil conforming
(cont.) to specifications.
Failure of rings to seat Use mineral base oil. Climb
(new nitrided cylinders). to cruise altitude at full
power and operate at 75%
cruise power setting until oil
consumption stabilizes.
Inaccurate pressure read- Cold weather. In extremely cold weather
ings. oil pressure readings up to
100 pounds do not nec-
essarily indicate malfunc-
tioning.
Overpriming. Cold weather. Rotate the crankshaft in the
counterclockwise direction
with throttle full open
and ignition switch OFF.
Inaccurate pressure Cold weather. High or low pressure read
readings. ings due to extremely cold
weather are not necessarily
a malfunction. Small and
long oil lines will not trans-
fer pressure readings accu-
rately until engine is quite
warm.
Trouble Cause Remedy
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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