Air Filter Question and brake noise. - Alfa Romeo Forum
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Air Filter Question and brake noise.

Hi All
I am looking for some info regarding the airfilter box on my 1985 1.5 twin carb 33. I have the 2 spouts coming out each end of my airbox but i dont have any hosesm attached to them for cool air to get into the air filter box. What do i need 2 do? Once attaced where does the other end goto?
Also im still getting a boiling noise everytime i have my foot on the brake pedal and as soon as i take my foot off the pedal it goes away. Is it the hydraulic fluid? Does anyone know what the problem could be? I keep checking the brake fluid level and its always at max. I also have a brake light problem where sometimes the brake lights dont work and sometimes they do, when they dont work the brake light fail on the check panel comes on to verify this. I have tested it out and true enough when they dont come on the check panel lights up and when they work the check panel does not light up. Sometimes when i stab at the brake pedal the brake lights stay on and when pressing gently on the brake pedal they usually dont stay on.

Any help would be appreciated.
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Re: Air Filter Question and brake noise.


I'm assuming you're talking about the 2 spouts that come out the top of the airbox as shown in my pictures. They actually join onto the exhaust manifold just after it exists the head. I believe that it is emissions related and recirculates the air from the exhaust back into the intake. They were probably disconnected in the hope of gaining a little bit more power.
Clean air should be entering from under the filter, traveling up through the filter, then outwards into the carbs. The silver tube going to the front of the car in my second picture (top of pic) is bringing in the fresh air. This connects down at the base of the airbox on the passenger side. There should be an opening there for it on your car too.

As for the brake problem, I'm not too sure on that one. My only suggestion would be bleed the system thoroughly and put in new fluid.
The rear light problem would most likely be caused by some corrosion on ground wires, meaning that they're not making proper contact.
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Re: Air Filter Question and brake noise.

for the brake light check panel problem you can check the floats in the brake master cylinder reservoir container

Last edited by enri; 10-08-07 at 10:51.
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Re: Air Filter Question and brake noise.

Check if your brake light problem is caused by the earth point for the rear light assemblies - this is a ring terminal which lives under one of the nuts holding the light assembly to the car body. In this photo, mine is covered in enough corrosion to make the brake lights blink when the indicators were turned on:
Also try removing the bulbs and making sure they're making good connection and aren't rusted or dodgy.
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