Piper Lance II - Page 371

Engine idles
too slow
turbo not turning.
LANCE
II SERVICE
MANUAL
TABLE VIIIA-II.
TROUBLESHOOTING CHART
(TURBOCHARGER) (cont.)
Trouble
Cause
Remedy
Oil in induction hous-
ing.
Engine idles too slow -
turbo
doesn't
turn al-
lowing oil
to leak from
compressor
seal.
Increase
engine
idle
speed to
a maximum
of
700 RPM,
if turbo
still
smokes, it must be
replaced.
Check
inter-
connect control for
proper
adjustment.
Note:
New turbo
may
smoke for a short
period of time.
Turbine
oil bearing
check
valve
not
closing
at engine
shut down.
Check
spring
actuated
check valve at turbo
oil inlet
fitting.
White exhaust.
Leaking
oil
seal in
turbine
(coked
oil
drain
passages).
Clean
drain passages.
It
is sometimes
nec-
essary
to
overhaul
or
replace
turbo.
Increase
engine idle
speed
to a maximum
of
700 RPM,
if turbo
still
smokes, it must be
overhauled
or replaced.
Check interconnect
control
for proper
adjustment.
POWER
PLANT - TURBO
Issued: 1/3/78
2D11