[strother]

I've probably asked enough basic questions to brand me for life, but I've got another one. Before I start, I'll tell you that I've spent the past 1.5 hours reading archived posts that turn up when I search "load" and "noise"...

My engine makes a rattling noise briefly when I accelerate hard under load -- usually from about 2000-3000 rpms or so in 2nd gear when driving around the neighborhood. It isn't horribly loud, but it is an additional sound on top of the engine noise. The noise only lasts a second or so until the rpms pick up in the gear I've selected. This is going to make it sound worse than it really sounds, but it reminds me of the sound a bus makes on accelration.

Is the sound normal? After reading the archived posts, I'm paranoid about broken head studs, and worried about timing and mixture. You should know that I just had the engine tuned up, including valve adjusment. It was doing this before and after the tune up.