Suzuki Samurai 1987 User Manual

5-2. DIAGNOSIS
POSSIBLE CAUSES OF EMISSIONS TEST FAILURES
Excessive Emission
Hydrocarbons (HC)
Explanation
Possible Causes
Excessive hydrocarbons are
l Engine not at normal operating temperature
caused by an air/fuel mixture
that is not burning completely.
l Disconnected, obstructed, leaking, or misrouted
vacuum hoses
l Vacuum leaks
.
l Maladjusted idle mixture
l Improper adjusted/sticking choke
l Maladjusted initial spark timing
o Defective spark plugs, wires or distributor cap
l Malfunctioning MCV
l Lead contamination of catalytic converter
l Malfunctioning feed back system
Carbon monoxide (CO)
Excessive carbon monoxide
l Engine not at normal operating temperature
emissions are due to a mixture
that is rich.
0 Maladjusted idle mixture
l Improperly adjusted/sticking choke
l Lead contamination of catalytic converter
l Leaking carburetor fuel passages or gaskets
0 Carburetor float level
0 Restricted air cleaner element
l Malfunctioning feed back system
Oxides of nitrogen (Nox)
Excessive oxides of nitrogen
are generally due to high tem-
peratures in the combustion
chamber.
l Obstructed/Ieaking/misrouted vacuum lines
0 Improper operation of the EGR system
l Plugged EGR passages
l Inoperative BVSV or TWSV
l Lead contamination of catalytic converter
l Malfunctioning feed back system
5-15

Suzuki Samurai 1987 Specifications

General

Brand	Suzuki
Model	Samurai 1987
Category	Automobile
Language	English