Alfa Romeo 33 owners manual page 28

text version of content this owner's manual page from owners manual to the vehicle Alfa Romeo 33, year of production 1983 - 1995:

COMPLETE CAR 3. Start the workshopex- ’s gas medium rpm, the vapors going up the Sweden, Australia) idling speed is hauster. reached. oil filler go through the flame trap 4. Srart the engine and warm it up located in the hose @ connecting (5) Act on mixture metering oil filler to air cleaner; from here to normal running temperature. screw @ till the smoothest possible then they go through the min. rpm 5. Now check if engine rpm is engine running is obtained, while within specified value. blow-by hose @ and, downstream keeping CO% within the prescribed valves. from throttle valve, are distributed Idle-rpm onto intake manifold @ _ 900 + 1000 r.p.m. CO% Since when the accelerator ‘is fully 850 + 950 r.p.m. ( l ) < 3.5% total depressed the vacuum generated by 0.7 + 2.4%(*) the engine is not sufficient to com- (“1 (for Switzerland, Sweden, pletely suck exhaust gases solely through the min. rpm hose, gases are Australia) (“) for Switzerland, Sweden, Aus- tralia also conveyed inside air cleaner, upstream from carburetor, by means 6. If not within specified value, of the max. rpm blow-by hose 0. (6) Fit back into place mixture adjust idle-r-pm just by turning metering and throttle valve screw relevant idle-adjusting screw@ CHECKING HOSES AND seals, which makes it possible to change UNIONS (7) ff further optimizing of idle-rpm rpm without changing CO percentage (Carbon monoxide). is desired, just act on.relevant idling 1. Inspect hoses and unions to . . adjusting screw0. make sure they are not in any way 7. Verifythat CO percentage picked up by tester corresponds to damaged and that are no leaks. 2. Disconnect all hoses and clean specified value and that engine runs smoothly. them blowing a jet of compressed air through them. Ajlowed CO % Replace any damaged hose. < 3.5 % total 3. Remove flame trap located in main blow-by hose near the oil filler; If not within specified value or in wash it with suitable cleaner, blow it case of engine tune up after engine with compressed air and, then fit overhauling or after having cleaned it into place. or replaced the carburetor, an adjustment involving also mixture metering screw@) and throttle valve screw@) is required. In this instance, proceed as follows: (1) Remove seals from mixture metering screw 0 and from throt- tle valve screw 0. (2) Tighten idling screw@ all the 1 Idling mixture metering screw way. 2 Idling adjusting screw (3) Now 3 Throttle valve adjusting screw act on throttle valve screw 3 0 and on mixture metering screw @ till following conditions are present: Rpm EMISSION CONTROL 850 SYSTEM Air cleaner Recycling of exhaust gas and oil 800 (*) Max. rpm blow-by hose Main blow-by hose CO% vapors, generating in the cylinder 0.5 + 1% total block and then burned in the cylin- Oil filter Min. rpm blow-by hose ders, is achieved through a series of blow-by hoses. Carburetor Intake manifold At any rpm, the vacuum created in (“) for Switzerland, Sweden, Cvlinder block Australia the carburetor is sufficient to convey gas and vapors into intake duct and (4) Loosen idling adjusting from here into cylinders for final combustion. screw @ till a 900+ 1000 rpm When engine is idling or running at (850 + 950 rpm for Switzerland, 00-3 1 May 1983

owners manual Alfa Romeo 33

owners manual Alfa Romeo 33 - year of production: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 - Alfa Romeo 33 owners manual EN