Air filter: It filters the air that gets into the engine, eliminates solid particles such as dust, vegetal residue, and small pebbles.
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It is part of the intake system. It is located in the engine bay inside of a plastic black box. It should be replaced periodically during every maintenance check-up. If it is too dirty, it may be possible to notice that the engine has lost its power, the movements of the car may become irregular or there might be black smoke coming out from the exhaust pipe.
Crank, no start. No spark, no fuel activity. 1st code p171. Replaced MAF, both O2 sensors, pcv, iridium spark plugs twice, oil change and both oil/air filters.
Car starts and dies...if I pour gas in throttle body it runs. I put in a fuel pump spark plugs air filter tested fuel pump relay its good tested ignition coils they are good