Jeep UNIVERSAL CJ-2A - Carburetor

'Jeep' UNIVER~AL 1¥1d 'Jeep; DISPATCHER
D-103. SERVICE. DiaGNOSIS
' ' ~· ~ • • ' •• • ... • J" • •
Poor Fuei·Economy-
Ignition Timing Slow or Spark Advance Stuck
· Carburetor Float High
Accelerator Pump Not Properly Adjusted
High Fuel Pump Pressure
Fuel Leakage
Leaky Fuel Pump Diaphragm
Loose Engine Mouitting Causing High Fuel Level
in Carburetor
Low Compression ·
Valves Sticking
Spark Plug!! Bfid .
Spark Plug Cables Bad
Weak Coil or Condenser
,i
..
•'
Burned·Val~es ·and Seats..:::.::CorftiliUed
· Valve Tappet Sticking
Valve Tappet·Clearance Incorrect
Clogged Exhaust System
Valves Sticking
Warped Valve
~ ~· : . -
Improper Tappet Clearance '· ·•
Carbonized or Scored Valve:Stems ': . " .
Insufficient Clearance Valve Stem 'to G~~(i'e
Weak or Broken Valve Spring ,, · ·•
Valve Spring Cocked ...
'
Contaminated Oil · :·· .
.'1.·
Overheating
Inoperative Cooling System
• 1
Improper Valve Tappet Clearance
Carburetor Air Cleaner Dirty
High Oil Lcr,yel in; Air Cleaner
Dragging Brakes ·
•.•; ' ' Thermostat Inoperative ·· " ·: .. ·'' ..•
Improper Ignition Tithh\g '''• : · ··· ''/ ,'
Front Wheels Out of Alignment
Tires Improperly Inflated
Inaccurate Odometer
Faulty Fuel Tank 'cap
Clogged. Muffler or Bent Exhaust Pipe
Lack of Power
Low Compression
.it•.
Ignition System (Timing Late) ····• · ·: .
Improper Valve Timing
... , Excessive Carbon Accumulation
", Fan, Belt tOo Loose
Clogged Muffler or Bent Exhaust.Pipe
1
,Oil System,Failure ,.,._,, ' .. ·.·.; ·.' ·. /.,
_ .. · Scored or I!.eaky Piston Rings ·· · ·
. , Popping-Spitting-Detonation ;,,
Improper Ignition '
·. t''
. ·,·:
•.
·\L
Improper•Furietioning Carburetor or Fuel Pump
Fuel Lin~s Clqgged .
:• :Improper Carburetion · :• ... ·: ':.;
·
,. Excessive Carbon Deposit in Cornbustion.Ch~~-
Air Clearier'Restrict<:d
Engine Temperature High
Improper Tapp~t C}c;:arance
Sticking Vahres_ :; ... '·'',
Valve Timigg LGJ.te ,
Leaky Gaskets
Muffler Clogged
Bent Exhaust Pipe
Defective Spark Plugs-Clean or Replace
bers ,
{" .....
·' · ·' '···Poor Valve' Seating
: •''·· :. '',··~'Sticking Valves
.: : '~' :Broken Valve Spring
· · .. • Tappets Adjusted too Close , ..
'.! ~-
Spark Plug Electrodes Burned
Water or Dirt in Fuel
Clogged Lines
: , Improper Valve Timing
·. rr;·;
• ,li . ~ •
·'
,.;.\:.·
,.
.· • ''i.TL ·;r
Defective Breaker Points-Replace Points Excessive Oil Comsumptiori t· 1-11
Incorrect Breaker Point Gap-Reset Points ; ' '"' · Pi~torPRings-Stuck in Grooves, WoJ,"O or Bm~en
Defective Condenser or Coil-Replace --~ ·-·'· · Piston Rings Improperly Fitted or Weak ':·: ,
Loose ElectricatConnections-Locate and Piston Ring Oil Return Holes Clogg~Q.. .,-·'"·
Tighten .:~·, '\_ ~ Excessive Clearance, Main and Connecting Rod
Broken Valve Spring-Replace Spring Bearings, · - '"··
1
"·
Broken Piston or-Rings-Replace '· Oil Leaks at Gaskets or Oil Seals ":: · : . ,
Defectiv~· Read
1
Gas'lfe~-Replace Gasket 'Excessive Clearance, Valve Stem to Valve Giiide
Cracked I)isb:libutor Cap--Replace Cap ·· · (Intake) · · ... ~·:·· , ••. ·;:.
: , · ·.Cylinder Bores Scored, Out-of-Round or T~ed
Low Compression·.·:· Too Much Clearance, Piston to Cylinder Bor¢'
Leaky Valves '; ' .. · . · Misaligned Connecting Rods ·· ·r• ..
Poor Pis~op. Ri~g Sea\ " • ._,. , ~·-·;::.High Road Speeds OJ;:~ewpera~ux:~, : .. :>
1
:,
Sticking·'rValves · · '.. C k V t'l t N t 0 t" g
ran case en 1 a or o ~,a :J.n • _ •. :· ,.,,,
~;~r~d~~i~~r:e: .;o~;oken ·•· · ·:. B~~~fng Failure :<;':/>.~
Tappet Cleararrce'lncorrect Crankshaft Bearing JournalOut-of•Round; ;"'' J
Piston Clearance too Large .. , ; Crankshaf~ Bearing Journal Rough '· ,;; .: 'r '''
Leaky Cylinder Head Gasket .. , . . . -.Lt(l.ck of Oil .,. ;,
-. ., .; ;.,. "~n Leakage .'/ ... , ,:·.::;1
Burned Valv~sand,~ats : ·· ••.-Dirty Oil '''· .. ; ·· ",,,,:~)
Sticking Valves'~,tooLoose in Guides "·' Low Oil Pressure or Oil PumpFailute·· !>'·;;:;
Improper Timing ·· : i ·:. .. -. Drilled Passages in Crankcase or Crankshaft
Excessive Cilrl:>oiJ.:Around Valve >Head and Seat Clogged
Overheating . . '·' ''· Oil Screen Dirty
Valve Spring·W¢ilk;~or·Broken ~::t COnnecting.Rod Bent
~: r:·; . . ' '~ .1 r • ' l ' :· .. • !
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