arrestor

Does anyone have a DC blocking lightning arrestor installed on their masthead antenna coax? OR does anyone have specific knowledge of the Polyphaser devices for same? I'm considering installing one; more to make sure that there can't be any DC passed to the mast via the coax shielding although...

What does it mean when black-grey smoke belches out from the flame arrestor. I have been experiencing a loss of power in gear. Just as the motor dies the smoke belches out. Cloged intake manifold (plenum)? I've cleaned out the carburetor. Not installed as yet. Problem started when the...