The solution happened to be replacing the plugs. I'm not sure which one was
the culprit. They are platinum and aren't supposed to be replaced until
105K miles. I only had 50K on the car. With the noise blanker this pretty
much brought the noise down from S8ish to not registering on the meter.
Thanks for all the tips! The car is otherwise wired and grounded pretty
solid, so hopefully no more problems!
73 de AB0YW,
Rodger
On 8/9/07, sebdesn <sebdesn@comcast.net> wrote:
>
> >
> >
> > - There is no noise when the engine is off or when the
> > ignition key is
> > in the on position (engine not running).
> > - The noise ramps up as RPM goes up.
> > - I had Honda check the engine for misfires or other
> > anomalies and it
> > got a perfect check up.
> > - The engine has coils/caps on top of the valve covers. I've
> > unplugged each cap while listening to the radio and been
> > unable to detect
> > any change in the buzz.
>
> Not sure what the noise is you are describing. If its plug noise you
> will be able to hear each plug fire, probably same with injectors. If
> its a "whirring" noise that changes pitch, it could be the alternator.
> I had a noisy alt. a few years ago (a Bosch) and took it to my
> alt/starter rebuilder, and he, Knowing the problem, polished and or
> replaced something and all was well.
> GL 73 de Bud WOHG
>
>
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