On Thu, 22 Jan 2004 11:51:31 -0800, "Paul Kim" <none@nowhere.com> wrote:

>Hi,
>
>I got a 2000 Civic DX, 40k. I get a strange metallic ticking/popping sound
>usually during half throttle when accelerating through 40-60 mph. It doesn't
>happen when I floor it. It disappears when I reach cruising speed. It only
>happens when my engine is fully warmed up after having driven 5-10 miles. It
>doesn't happen when I rev the engine in park.
>
>I took it to a couple mechanics...they can't hear it, but they think it's
>probably misfiring (I thought my car had a knock sensor), and I need a
>tuneup. I was also told it might be an exhaust leak or my valves should be
>adjusted.

You're about the right mileage/age for catalytic converter heatshields to
start rattling, especially if you live in the frost belt.<GRRRRR> Do you
get it at approx. the same RPMs in every gear? Your description is kinda
vague but I guess it *could* be the valves which need adjusting - probably
time anyway if they haven't been looked at before.

Rgds, George Macdonald

"Just because they're paranoid doesn't mean you're not psychotic" - Who, me??