Mr30 L24 Blowing Out Airflow Meters

[SkylineL24]

Have been restoring my fathers MR30 Skyline for a while now, have finally got it ready for registration and now it is eating airflow meters, 2 in a mater of about 3 hours of running, can anyone enlighten me on why this is happening, about to pull one apart to see if I can diagnose the fault, any help would be appreciated

[SkylineL24]

Thought I better add that before it dies completely it will run like it is over fuelling at idle and blows a fair bit of black smoke, I.e running way to rich. It will idle ok, but once you have added some throttle it starts to break down. When holding the throttle open it comes good for a moment then breaks down again. Replace the air flow meter and it runs fine for about an hour. Any ideas where to start looking guys.

Edited November 17, 2013 by SkylineL24

[SkylineL24]

FYI the engine is an L24

[66yostagea]

You mean L24E?