Category Archives: Engine Air Filter

Engine Air Filter

Engine Air Filter

Today we want to talk about your engine air filter. That's the filter that cleans the air before it's burned in your engine. Many people in CHICO wonder how often they should change their engine air filter. The simple answer is "when it's dirty." That's a function of how much air has passed through the filter, so your vehicle manufacturer will recommend a mileage interval for replacing the air filter. But you can imagine that how dirty the air is would affect how quickly the filter gets filled. If you drive in CHICO where there's lots of dust, pollution or pollen, your engine air filter will get dirty more quickly and need to be changed sooner. That's why we check the air filter with every full-service oil change at D AND E AUTO REPAIR. We can visually tell if the filter needs to be changed. Your filter can only hold so much dirt. Once the filter is full, dirt will pass through to th ... read more

Simple Answers from D AND E AUTO REPAIR: Engine Air Filter

Question What's the harm in putting off replacing my engine air filter a little longer? Answer That's a fair question because the harm takes a while to manifest.  Let's take a small step back and talk about what an engine air filter does. The air all around us contains dust, dirt, pollen, spores, etc.  Some areas and times of the year have more contaminants in the air.  The job of the air filter is to keep that stuff out of your engine.  The benefit of that is obvious. Now your engine uses a lot of air – like 12,000 gallons of air for every gallon of fuel – so the engine air filter has a big job to do.  When the filter gets full and can't hold any more dirt, all that air still has to get to the engine, so dirt gets forced through the filter and heads on downstream. The air flows passed the mass air flow (MAF) sensor on its way to the engine.  The MAF sensor tells the engine control computer how much air is coming so the co ... read more