Air Cleaner air box questions

Blaze One · Post by **Blaze One** » Wed Jul 27, 2005 6:24 pm

Thanks for the info , I did not want to create another thread so I am adding a question to this one .

Feel free to start a new topic, for a new topic-HJ

When i changed my air filter , I notice that there is a very very fine black film/dust on the round pc. of metal with holes in it up inside the box , AFTER the filter . isn't the filter supposed to catch this stuff ? when i rubbed my finger on it I notice that this metal screen is supposed to be silver not BLACK . is this bad ?
I usually replace my filter at the recomended intervals too .

Post by **HenryJ** » Wed Jul 27, 2005 6:37 pm

Filters do not get 100% of the contaminants.

Make sure all your seals are in good condition. Connections need to be tight as well.

The "interval" recommendation, is just that. inspect it yourself at each oil change and after that dusty desert outing. Replace or clean as needed.

I would probably be comfortable with washing out the MAFS screen with a mild aerosol carb cleaner. You will need to remove it do do this. Be very careful around the sensors. They are the tiny resistors attached by fine wires.

Don't worry about some discoloration of the MAFS screen. It is made of aluminum and does oxidize.

If you run a descreened MAF sensor, some alcohol and a Q-tip work well for gently cleaning the sensors.

Blaze One · Post by **Blaze One** » Wed Jul 27, 2005 6:57 pm

ok sounds good then , it may have been oxidation then . I gather it is not good to get carb cleaner on the sensores then .

Post by **HenryJ** » Wed Jul 27, 2005 7:15 pm

If you're careful they would probably be OK. They just make me nervous

One risk you take is removing any coating it may have had to prevent oxidation. That is why I recommended using mild cleaners.

Blaze One · Post by **Blaze One** » Wed Jul 27, 2005 7:21 pm

gotcha , if it ain't broke I am not fixed it .

Post by **HenryJ** » Wed Jul 27, 2005 7:23 pm

Carefully cleaning any residue from the sensors is a good idea.
The film of debris can skew sensor readings.

Jeff · Post by **Jeff** » Thu Jul 28, 2005 7:07 am

Mine threw an SES light 2 weeks ago, when I checked it the error was a bad MAF sensor, I took it apart and hit it with some compressed air, replaced the filter, cleared the code, no more issues as of yet.