You guys were so helpful in my last thread. I found a fuel problem right away and fixed it promptly. I had sucessfull test drives until today when I gave the car some throttle for the first time getting on the highway. Since then I have had an engine knock. I hear it at idle faintly. Then it goes away if I rev it until about 3000 when it comes back louder. the sound comes from the front or passenger side of the engine. It happens regardless of clutch, so I don't suspect the trans. It still happens with the serpentine belt off so it is not an accessory. Naturally I have not been driving it and am afraid to run the engine now.

I'm attaching a log file I took when I was listening to the engine. Is there anything I should check first? I can't believe the problems I've been having with this project, but the last thing I expected was to tear down the engine. Is there anything it can be besides a mechanical failure?

thanks,
Tom