Excessive Oil Consumption - Toyota 4A-F Repair Manual

Probllm
huom,
" h.nled 0111
[ngine d .. ",1Ing
wlMltO ignit!Ol1
,witch
Pfoblem
!;titer Ini on
Muilier e�plosio<1
declle'llion OI1ly
Mullief l.pIo�
II
\liter fnl thfl time
backfnl
Engine
Pfobtem
EXCenlYI o�
consumptIOn
nute
ENGINE DIESELING
Pos,ibll
EFI ,,,,tern probMmf
IncOfTtct 'llfli t ion timing
EGR
IYI'lm ' .... Iy {wI EGR SV.te""
AFTER FIRE, BACKFIRE ClUte
DlcelerallOn
Pouibll
Of' 011
luel cut IV$lem Itway_ all
svstem always
problem
Air cleane<�
HI system
Io1correct
Incorrect ignit!Ol1 hming
valvl clu,ance
EFF IVIlem p<obLem
Vecuum Il3k
I PCV !>oS"
I Io1Uk" manifold
I 1
!Air intake chamber!
I Intake ai, COl11foi y.lve
h,ollle body
I Bnlke boosler ""e
PuWing in I" betw ... . lir
flow
.nd throttle body
Io1sullieiflm Fuel
Incorrect iQllition liming
1nc0l1'1K:1 valve cLearlOCe
""""""
Carbon deposits in combustion

EXCESSIVE Oil CONSUMPTION

POllibl1 Clute
O� Ie.k
PCV hne clogged
Pilton ring worn or dam;>ged
Vlltltto Slem and guide buaing worn
Vitlwlilem oil sell worn or damaged
Repair
Check
Resel timing
Chflck EFI (lUll cutl 'ylltem
Cl\eock
1'Iep.eoi ,
Check
Rlsel timing
Adjust vllve cltia,en.r;e
Repair as necessary
Check hoses Ind
110 ....
meter Rep .. , IS necUUry
Troubleshoot luel
Resel timing
AdiuSt valve cle ... lnee
Inspect cylinde<
RePl'ir
Cl\eock
Check
Chec\ v.lves Ind guichl
bushings
Check
Remedy
nlCIfMty
a t
EGR .",Iem
Almldv
Of'
Syll'�
I"
cleane,
neelnary
II
repI"
al
"Slem
"-lid
Almedy
necessary
as
PCV 1,-,1tn'I
'ings
011 M'�
Pigi
EM-31
....
EM-34
EM_31
F.M-3!!
[1.4_31
EM-35
£M_1 011
Pigi
[1.4_131
EM-l01