I have a 1983 "L" model 2.3 with a 1-bbl carb, auto transmission. The car is running rich. All plugs are black with carbon. The car has 85K miles. Also the exhaust is running cherry red from the rich condition and apparently the air pump is not being put into bypass when the throttle is WOT. The WOT switch is working but there is no voltage to it. The car has set 20 years
Also at a warm idle the RPM pulsates 500-1250 . I can not find a vacuum leak anywhere. Any suggestions? comments?
I replaced the PVC valve. I recently blocked the EGR valve with a plate between intake manifold and ERG valve. New fuel pump.
Gas mileage is poor at 16-18 MPG.
Would a clogged exhaust cause these symtoms?
Also at a warm idle the RPM pulsates 500-1250 . I can not find a vacuum leak anywhere. Any suggestions? comments?
I replaced the PVC valve. I recently blocked the EGR valve with a plate between intake manifold and ERG valve. New fuel pump.
Gas mileage is poor at 16-18 MPG.
Would a clogged exhaust cause these symtoms?