Paul wrote:
> Greetings: I've got a '92 Accord (175,000 mi). Have been trying to
> really give it a thorough upgrading without a total overhaul, and just
> wondered if either or both of the following two things could possibly
> increase engine performance and longevity: (1) valve adjustment
> and, (2) a new O2 sensor. Neither of these issues has ever been
> addressed over the life of the car. I have anecdotally heard that
> a valve adjustment and/or new oxygen sensor could enhance
> performance, but would like to hear it from someone out there in
> the real world before shelling out real money. Thanks. - Paul
>
================

Do you mean 'performance', or fuel economy. Your wording isn't clear.
Valve adjustment should follow the manual's recommendation, (unless
there is a known error, like the CRV manual) and the PCV often gets
overlooked.

Why not list the stuff you _have_ done?

'Curly'