|
914
Exhaust Emissions Specifications |
Reference source |
|||||
|
Model |
Idle speed RPM |
CO% vol. max. |
Regulatory Body and Testing Conditions |
Emission label |
S&T Manual |
Factory Repair Manual |
|
1971 1.7L |
800-950 |
4.5% |
EPA and California standard |
X |
||
|
1972 1.7L |
850-900 |
4.0% |
EPA and California standard |
X |
||
|
850-900 |
0.7% |
Factory specification |
X |
X |
||
|
1973 1.7L |
800-950 |
3.0% |
EPA and California standard |
X |
X |
|
|
1973 2.0L |
850-950 |
1.5% |
EPA and California standard, Factory specification |
X |
X |
X |
|
1974 1.8L |
800-900 |
4.5% |
EPA and California standard |
X |
||
|
800-900 |
3.0% |
Factory specification |
X |
|||
|
1974 2.0L |
850-950 |
3.0% |
EPA and California standard |
X |
X |
|
|
1975 1.8L |
850-950 |
3.0% |
USA standard and Factory specification |
X |
||
|
800-900 |
0.8% |
California standard and Factory specification, measured before
catalytic converter |
X |
|||
|
800-900 |
0.4% |
California standard and Factory specification, measured after
catalytic converter |
X |
|||
|
1975 2.0L |
850-950 |
1.0% |
USA standard and Factory specification (with air injection,
without catalytic converter), CO 3% max measured at tailpipe with
disconnected air pump hose, CO 1% max measured at tailpipe with air pump hose
connected |
X |
||
|
850-950 |
0.4% |
Factory specification, CO measured after catalytic converter |
X |
|||
|
850-950 |
0.0% |
California standard and Factory specification (with air
injection and catalytic converter), CO 1-5% max measured before catalytic converter
with air pump hose disconnected, CO 0%
measured after catalytic converter with air pump hose connected |
X |
|||
|
1976 2.0L |
850-950 |
3.0% |
EPA and California standard (with EGR, air injection and catalytic
converter), CO measured before catalytic converter with disconnected air pump
hose, PCV hose and carbon canister |
X |
X |
|
|
850-950 |
0.4% |
Factory specification, CO measured after catalytic converter |
X |
|||
|
Notes: |
||||||
|
1. Ignore the windshield
emission label values. These are
apparently a required label indicating factory compliance testing averages of
the vehicle design which reference different measurements (grams per mile)
than are useful today. |
||||||
|
914 Emission
control systems |
|||||||||||||||||||||
|
Equipment |
Pollutant reduction |
1970 |
1971 |
1971 |
1972 |
1972 |
1973 |
1973 |
1973 |
1973 |
1974 |
1974 |
1974 |
1974 |
1975 |
1975 |
1975 |
1975 |
1976 |
1976 |
|
|
1.7L |
1.7L USA |
1.7L CA |
1.7L USA |
1.7L CA |
1.7L USA |
1.7L CA |
2.0L USA |
2.0L CA |
1.8L USA |
1.8L CA |
2.0L USA |
2.0L CA |
1.8L USA |
1.8L CA |
2.0L USA |
2.0L CA |
2.0L USA |
2.0L CA |
|||
|
Horsepower (DIN) |
80 |
80 |
80 |
80 |
80 |
80 |
72 |
95 |
95 |
76 |
76 |
95 |
95 |
76 |
<76 |
88 |
<88 |
88 |
<88 |
||
|
Fuel Evaporation
Control |
Charcoal filter |
HC |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Positive Crankcase
Ventilation |
PCV+Anti-flashback valves |
HC |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
Overrun Air Supply
System |
Deceleration valve |
HC |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
Intake Air Preheat |
Air filter box snorkle |
HC |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
CO adjustability at
ECU |
ECU adjustment knob |
CO |
|
|
|
|
|
|
|
|
|
|
|
|
|||||||
|
Modified exhaust, with
thermal reactors |
1975-76 exhaust system |
HC, CO |
|
|
|
|
|
|
|||||||||||||
|
Air Injection |
Air pump and air injectors |
CO, HC |
|
|
|
|
|||||||||||||||
|
Fuel cut-off on
deceleration |
ECU modification |
HC |
|
|
|
|
|||||||||||||||
|
EGR |
EGR valve |
Nox |
|
|
|
||||||||||||||||
|
Catalytic converter |
Catalytic converter |
HC, CO, NOx |
|
|
|
||||||||||||||||
What are the Factory- specified
emission control system maintenance requirements?
Model yrs Intervals Maintenance Item
1972-76 5K Check/adjust
CO% at ECU to specification
1970-71 6K Check/clean
PCV system – valve/hoses
1970-76 10K Check
charcoal filter hoses
1972-76 10K Check deceleration
valve function
1975-76 15K Check
air injection system- air pump, belt, filter
1972-74 20K Check/clean PCV
system – valve/hoses
1975-76 30K Check/clean PCV
system – valve/hoses
1975-76 30K or dash
lights Check/clean EGR valve/tubing
1975-76 30K or dash
lights Replace catalytic converter
1970-76 50K Replace charcoal
filter