Banks Power Chevy_GMC Trucks: Diesel ’82 - 93 6.2L Forced Induction- Sidewinder Turbo System (early-body) - Manual (Page 19)

TROUBLE SHOOTING CHART
19
SYMpTOM
HIGH EGT.
excessIve fueL sMOKe,
(BLACK) pOOR pERfORMANCE.
excessIve OIL sMOKe (BLue).
LacK Of BOOsT, excessIve
OIL sMOKe, & pOOR
pERfORMANCE.
OIL WETTING Of THE INSIDE
SURfACES Of THE BOTTOM
Of THe aIR fILTeR casTIng,
aIR InLeT eLBOW, and TuRBO
COMpRESSOR HOUSING.
LOW BOOsT, pOOR
peRfORMance, sOMeTIMes
WITH HIGH EGT.
LACK Of BOOST OR LOW
BOOsT, pOOR peRfORMance.
pYROMETER NOT WORKING.
GRADUAL LOSS Of
peRfORMance, and pOssIBLY
BOOST (“fLATTENS OUT” AT
HIGH RpM).
CAUSE
excessIve fueL deLIveRY.
fauLTY InJecTOR(s).
ResTRIcTed exHausT sYsTeM.
fauLTY InJecTOR(s).
DIRTY AIR CLEANER.
RESTRICTED AIR INTAKE.
pOOR QUALITY OR DIRTY DIESEL fUEL.
BLOCKED OR RESTRICTED TURBO OIL
DRAIN.
excessIve engIne BLOWBY BeIng
VENTED INTO THE AIR INTAKE.
daMaged TuRBO BeaRIngs,
CAUSED BY DIRTY OIL OR LACK Of
LUBRICATION.
WORN OR DAMAGED ENGINE
COMpONENTS.
THIS IS NORMAL. THE OIL IS pRESENT
IN THE VApORS fROM THE CRANKCASE
VENTILATION SYSTEM. THESE VApORS
ARE ALSO pRESENT IN THE INTAKE
MANIfOLD pRIOR TO TURBOCHARGING.
THIS IS NOT THE RESULT Of A fAILED
TURBO SHAfT SEAL.
ResTRIcTed exHausT sYsTeM.
INTAKE SYSTEM LEAKS.
exHausT sYsTeM LeaKs aHead Of
TuRBOcHaRgeR exHausT InLeT.
BROKEN TURBOCHARGER BLADES
caused BY fOReIgn OBJecTs
enTeRIng THe InTaKe OR exHausT
SYSTEM.
CHECK fOR REVERSED WIRES.
pOOR WIRE CONNECTIONS.
WIRING CONNECTIONS SHORTED
TOGETHER.
cLOgged, OR paRTIaLLY cLOgged,
fUEL fILTER.
REMEDY
cHange InJecTOR puMp seTTIng.
RepaIR InJecTOR(s).
CHECK fOR OBSTRUCTIONS.
RepaIR InJecTOR(s).
CLEAN OR REpLACE.
CHECK fOR BLOCKED OR COLLApSED AIR
INTAKE HOSES.
RepLace fILTeRs, cLean LInes,
InJecTORs and TanK as ReQuIRed.
ELIMINATE RESTRICTIONS OR LOW SpOTS
IN THE DRAIN LINE.
REpLACE WORN pISTON RINGS OR VALVE
GUIDES. CHECK THE ENGINE OIL LEVEL.
ReBuILd TuRBO, cHecK OIL LeveL,
CHANGE OIL AND fILTER AT REGULAR
SERVICE INTERVALS.
cHecK cOMpRessIOn, RepLace RIngs
OR VALVES.
If NO BLUE SMOKE IS pRESENT AT THE
veHIcLe’s TaILpIpe, nO acTIOn Is
necessaRY. If BLue sMOKe Is pResenT,
THe cause MaY, OR MaY nOT, Be fROM
THE TURBO. pOOR ENGINE OIL CONTROL
(WORn RIngs OR vaLve guIdes, OR TOO
MUCH OIL) MAY CAUSE THIS CONDITION.
eLIMInaTe ResTRIcTIOns, cHecK fOR
OBSTRUCTIONS.
LOcaTe and seaL LeaKs; cHecK seaL
BETWEEN pRESSURE CHAMBER AND
INTAKE MANIfOLD.
LIsTen fOR LeaKs, RepaIR as
NECESSARY.
ReBuILd TuRBOcHaRgeR; eLIMInaTe
Means Of fOReIgn OBJecT enTRY.
REVERSE WIRES.
CLEAN AND SECURE CONNECTIONS.
INSULATE CONNECTIONS.
REpLACE fUEL fILTER(S).
p.n. 96291 v.3.0