1998 MITSUBISHI MONTERO air filter

Vacuum leaks Repair vacuum leaks
Fuel lines clogged Remove restriction









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Hesitation Cracked or broken vacuum Replace vacuum hoses
hoses
Vacuum leaks Repair Vacuum leaks
Binding carburetor linkage Eliminate binding
Binding throttle linkage Eliminate binding
Binding choke linkage or Eliminate binding
fast idle cam
Improper float setting Readjust float
setting, see FUEL
Cracked or broken ignition Replace ignition
wires wires









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Rough idle, Incorrect curb idle or fast Reset idle speed, see
Missing or idle speed see ENGINE PERFORMANCE
Stalling
Incorrect basic timing Reset ignition timing
see ENGINE PERFORMANCE
Improper idle mixture Reset idle mixture,
adjustment see ENGINE PERFORMANCE
Improper feedback system Check feedback system
operation see ENGINE PERFORMANCE
Incorrect spark plug gap Reset spark plug gap,
see ENGINE PERFORMANCE
Moisture in ignition Dry components
components
Loose or broken ignition Replace ignition
wires wires
Damaged distributor cap or Replace distributor
or rotor cap or rotor
Faulty ignition coil Replace ignition coil
Fuel filter clogged or worn Replace fuel filter
Damaged idle mixture screw Replace idle mixture
screw, see FUEL
Improper fast idle cam Reset fast idle cam
adjustment adjustment, see TUNE-
see ENGINE PERFORMANCE
Improper EGR valve operation Replace EGR valve
Faulty PCV valve air flow Replace PCV valve
Choke binding or improper Reset choke or
choke setting eliminate binding

Vacuum leak Repair vacuum leak
Improper float bowl fuel Reset float
level adjustment, see FUEL
Clogged air bleed or idle Clean carburetor
passages passages, see FUEL
Clogged or worn air cleaner Replace air filter
filter
Faulty choke vacuum Replace diaphragm,
diaphragm see ENGINE PERFORMANCE
Exhaust manifold heat valve Replace heat valve
inoperative
Improper distributor spark Check distributor
advance operation
Leaking valves or valve Check and repair
components valvetrain
Improper carburetor Remove and remount
mounting carburetor
Excessive play in Replace distributor
distributor shaft
Loose or corroded wiring Repair or replace as
connections required









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Engine Surges Improper PCV valve airflow Replace PCV valve
Vacuum leaks Repair vacuum leaks
Clogged air bleeds Remove restriction
EGR valve malfunction Replace EGR valve
Restricted air cleaner Replace air filter
filter
Cracked or broken vacuum Replace vacuum hoses
hoses
Cracked or broken ignition Replace ignition
wires wires
Vacuum advance malfunction Check unit and
replace as necessary
Defective or fouled spark Replace spark plugs
plugs









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Ping or Spark Incorrect ignition timing Reset ignition timing
Knock see ENGINE PERFORMANCE
Distributor centrifugal or Check operation and
vacuum advance malfunction replace as necessary
Carburetor setting too lean Readjust mixture