Hey guys, my buddy has a 97' accord lx, and came to my house today telling me that he has a problem with it, and I cant seem to diagnose it.

Only for a few secs after starting the car each day, and only in first, the car sputters as if something is clogged. The reason I cant figure out what it is is bc it only acts this way in first, and after about 15-30 seconds it stops doing it. The tach he said also drops kinda low while htis happens, when idling. Again, after about half a minute, all of this stops and everythings fine.

Any ideas?