Jeep Cherokee 1999 Electronic Service Manual page 1208

X J
REM OVAL AN D I N STALLAT I ON (Cont inue d)
INSTALLA TION
(1) Clea n ea ch in ject or bor e a t in t a ke m a n ifold.
(2) Apply a sm a ll a m ou n t of clea n en gin e oil t o
ea ch in ject or o-r in g. Th is will a id in in st a lla t ion .
(3) P osit ion t ips of a ll fu el in ject or s in t o t h e cor r e-
spon din g in ject or bor e in in t a ke m a n ifold. Sea t in jec-
t or s in t o m a n ifold.
(4) In st a ll a n d t igh t en fu el r a il m ou n t in g bolt s t o
11 3 N·m (100 25 in . lbs.) t or qu e.
(5) P osit ion cr a n ksh a ft posit ion sen sor pigt a il wir e
h a r n ess cla m p a n d wir e h a r n ess t o fu el r a il m ou n t -
in g st u d. In st a ll n u t secu r in g h a r n ess t o fu el r a il
m ou n t in g st u d.
(6) Con n ect t a gged in ject or h a r n ess con n ect or s t o
a ppr opr ia t e in ject or.
(7) Con n ect fu el lin e a n d fu el lin e la t ch clip t o fu el
r a il. Refer Qu ick-Con n ect F it t in gs in t h is gr ou p for
pr ocedu r es.
(8) In st a ll pr ot ect ive ca p t o pr essu r e t est por t fit -
t in g (if equ ipped).
(9) In st a ll ca ble r ou t in g br a cket t o in t a ke m a n i-
fold.
(10) Con n ect t h r ot t le ca ble a t t h r ot t le body.
(11) Con n ect speed con t r ol ca ble a t t h r ot t le body (if
equ ipped).
(12) Con n ect a u t om a t ic t r a n sm ission
t h r ot t le body (if equ ipped).
(13) In st a ll a ir t u be (or du ct ) a t t op of t h r ot t le
body.
(14) In st a ll fu el t a n k ca p.
(15) Con n ect n ega t ive ba t t er y ca ble t o ba t t er y.
(16) St a r t en gin e a n d ch eck for fu el lea ks.
FUEL INJECTOR RAIL—4.0L ENGINE
REMOVAL
WARNING: THE FUEL SYSTEM IS UNDER CON-
STANT FUEL PRESSURE EVEN WITH ENGINE OFF.
THIS PRESSURE MUST BE RELEASED BEFORE
SERVICING FUEL RAIL.
(1) Rem ove fu el t a n k filler t u be ca p.
(2) P er for m F u el Syst em P r essu r e Relea se P r oce-
du r e a s descr ibed in t h is Gr ou p.
(3) Discon n ect n ega t ive ba t t er y ca ble fr om ba t t er y.
(4) Rem ove a ir t u be a t t op of t h r ot t le body. Not e:
Som e en gin e/veh icles m a y r equ ir e r em ova l of a ir
clea n er du ct s a t t h r ot t le body.
(5) Rem ove in ject or h a r n ess elect r ica l con n ect or s
a t ea ch in ject or. E a ch in ject or con n ect or sh ou ld h a ve
a n u m er ica l t a g a t t a ch ed iden t ifyin g it s cor r espon d-
in g cylin der (F ig. 30). If n ot , iden t ify ea ch con n ect or
befor e r em ova l.
Fig. 30 Fuel Rail Mounting—4.0L Engine
(6) Discon n ect fu el su pply lin e la t ch clip a n d fu el
lin e a t fu el r a il. Refer t o Qu ick-Con n ect F it t in gs in
t h is gr ou p for pr ocedu r es.
(7) Discon n ect t h r ot t le ca ble a t t h r ot t le body. Refer
t o Th r ot t le Ca ble Rem ova l/In st a lla t ion in t h is gr ou p
ca ble a t
for pr ocedu r es.
(8) Discon n ect speed con t r ol ca ble a t t h r ot t le body
(if equ ipped). Refer t o Speed Con t r ol Ca ble in Gr ou p
8H , Speed Con t r ol Syst em for pr ocedu r es.
(9) Discon n ect a u t om a t ic t r a n sm ission ca ble a t
t h r ot t le body (if equ ipped).
(10) Rem ove ca ble r ou t in g br a cket (F ig. 30) a t
in t a ke m a n ifold.
(11) Rem ove n u t secu r in g cr a n ksh a ft posit ion sen -
sor pigt a il h a r n ess t o fu el r a il m ou n t in g st u d.
Rem ove cla m p a n d h a r n ess fr om fu el r a il m ou n t in g
st u d.
(12) Clea n dir t /debr is fr om ea ch fu el in ject or a t
in t a ke m a n ifold.
(13) Rem ove fu el r a il m ou n t in g n u t s/bolt s (F ig.
30).
(14) Rem ove fu el r a il by gen t ly r ockin g u n t il a ll
t h e fu el in ject or s a r e ou t of in t a ke m a n ifold.
INSTALLA TION
(1) Clea n ea ch in ject or bor e a t in t a ke m a n ifold.
(2) Apply a sm a ll a m ou n t of clea n en gin e oil t o
ea ch in ject or o-r in g. Th is will a id in in st a lla t ion .
(3) P osit ion t ips of a ll fu el in ject or s in t o t h e cor r e-
spon din g in ject or bor e in in t a ke m a n ifold. Sea t in jec-
t or s in t o m a n ifold.
(4) In st a ll a n d t igh t en fu el r a il m ou n t in g bolt s t o
11 3 N·m (100
(5) P osit ion cr a n ksh a ft posit ion sen sor pigt a il wir e
h a r n ess cla m p a n d wir e h a r n ess t o fu el r a il m ou n t -
FUEL SYSTEM
25 in . lbs.) t or qu e.
14 - 17