Originally Posted by James

Did somopne play around with the carb or the surrounding plumbing? This is an airleak! and not due to the airfilter! how much mileage have you been getting? have you checked the choke plunger in the carb?
if you take out the side panels, you will notice that there are some black tubes that go into the left side of the carb. this tube goes and connects to more tubes with the help of a plastic T joint. One of those tubes also goes and connects to the intake manifold.
The problem is that either one of these tubes has got a crack and is letting in excess air or the brass joint at the intake manifold has loosened up and is letting in air.
Ive experienced this problem on both my zma's and had to figure out and fix them myself.


Cheers!