1993 Toyota Camry • 220,000 miles

CAMARY V6 LE HAS a rough idle. The engine compression, spark plugs and ignition wires checked out fine. I've had to reajust the timing to 10 degrees BTDC a number of times during my toubleshooting process. The timing belt is overdue for a replacement right now. Could it possbly be badly streched and worn out and contributing to this puzzling problem? I really need your assistance and help to correct this difficult problem. Thanks so much! Sincerely; Max
Max higa
June 5, 2013.

It could be the problem if you have to keep adjusting timing but check fuel pressure as well and scan for codes. Check cranks and cam sensors as well.

Jun 6, 2013.