THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 3
Jun 1/03
5G3
81-20-00
CHART 1 (Sheet 2 of 2)
TROUBLESHOOTING TURBOCHARGER
Trouble Cause Remedy
Critical altitude lower Waste gate valve Clean and free action.
than specified. sticking.
Check actuator system.
Engine surges or Clogged induction Check induction duct
smokes. duct. for restrictions to air flow.
Bootstrapping. Operate engine within
range outlined in
operation manual.
NOTE: Smoke would be normal if engine has idled for a prolonged period.
High deck pressure. Waste gate sticking Butterfly shaft binding.
(Compressor discharge closed. Check bearings.
pressure.)
Replace waste gate valve
or correct actuator rigging.
Oil in induction housing. Engine idles too slow, Increase engine idle
turbo doesn’t turn speed to a maximum of
allowing oil to leak from 700 RPM, if turbo still
compressor seal. smokes, it must be
replaced.
Check interconnect control
for proper adjustment.
NOTE: A new turbo may smoke for a short period of time.
Turbine oil bearing Check spring actuated
check valve not check valve at turbo
closing at engine oil inlet fitting.
shut down.
White exhaust. Leaking oil seal in Clean drain passages.
turbine (coked oil It is sometimes necessary
drain passages.) to overhaul or replace
turbo.
Engine idles too slow, Increase engine idle
turbo not turning. speed to a maximum of
700 RPM, if turbo still
smokes, it must be
overhauled or replaced.
Check interconnect control
for proper adjustment.
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