Chevrolet CAMARO 1979 Service Manual page 554

6C.2 F U E L S Y S T E M
DIAGNOSIS
CARBURETOR
DIAGNOSIS
The follow ng dlagnonic procedurès are fôr carbùrêtor relared problem! and their êllects on câr performânæ. Orhêrsysrems ol rhe carcan
a so cause slmilar probems and shou d be chêcked when lsted on the cha^, The probtêm areas described arê
1 E n g i n e r a n k 5 n ô r m a l y . W i l n o t n a r t .
2. Engine sra.rs and sralk,
3 . E . g . e s r a r r h a r d .
4. Ensiôe idles abnorma ly ând/or eâl s.
5 . n c o n s c l e n t ê n s i ^ ê
l d e s p ê e d s .
6 . E n s i n e d e s e s ( a f t e r r u n ) L p o n s h u t o r l ,
7. Eng ne heshêres on acce êrêrion.
I
t . q ' n e h à . l Ê . \ ' " c . i o i â p o w r à . r o w < p e e d , ,
9
Enqine has lês than norma power on heâvv âc.e erâ1iôn ôr at h sri soeed.
1 1 . P o o r g a s m i e â g e .
C O N D I T I O N POSSIBLE CAUSÊ C O R R E C T I O N
E n g i n e C r a n k s N o r m a l y
Lmproper *art.9
proceou.e used.
Choke va ve ror operalins
E n g i n e f ô ô d e d . T o c h ê c k
lôr f ôôding, remove lhe air
c e a n e r w i t h t h ê e n q i n e
mmediâtelv shul oll and
look into the câôureior
bôres. Fuê wil be dripping
Check wiih the cu$omer to deiermine
it proper na.rns procedure is used,
a s o u t l n e d i n t h e O w n ê r ' s M a n u a .
A d i u s r r h e c h o k e t h e r m o s l â l i c . o i l
io speclficâtiôn. Check the choke
valve and/or linkage âs nece$arv.
R e p l a c e p a s i l d e l e c t v e . l l c ê u s e d
b y l o r e i q n h ê t e r i a l a n d s u f r , c e é n w i r h
s u i t â b l e n o n . ô l b â s e s o l v e n t .
NOTE: Afîer any chokê svstem work, check
choke vacuum break seling! ând.oirect
Remôve i!el ine êi carburetôr. Connêcr
coôtainer. Remove the wire from the 'baf'
r e r m i n â l ô f t h e d h Ù b u r ô r . c r ê n k
ô v e r e n g n e - i l r h é r ê É n o l u ê l d i s
charge Troû the f!el liôe, test f!el
P!nP as ounined n Sect on 6. ll luel
s u p p v i 3 o k â y , c h è . k i h e l o l o w i n g :
a . I n s p e c î f l e l n ê r T i l t ê r . l f
b , l f f u e l l l k e r i s o k a y , r e m o v e â i r
horn ând check fôr ô b nd in the
l l o â t m e c h â n k m o r a n i c k i n g i n e t
ôeedie. ll okây, adju$ lloat âs speôified.
chêck fuer inlet needle ând seâr for
proper sea. ll â needle and sear
resrr n nôt avairab e, app v vac!um
ro the needle seâtwith needle in$alied.
lf rhe needle È leakinq, replace.
Chêck I oar for lree movemenr,
bènt frôar hansêr or binds in the
l l t o r ê i q n h a t e f i a l i s i n f u e l s y i e m , c l e a n
the system and rêplâce foelf li€6 as
necessâry. ll êxce$ive foreiqn maierialis
to!nd, completely d sâ$emb e ênd clêan.
Ê i g . 6 C 1 - 1 . . D i â g n o s i s I o f 9