New to the board and new to the Marque. Just purchsed a 1990 Legacy. One family since new, approx 155k miles. Seems to run well above about 2000 rpm. Seems to have good power and acceleration but idles very rough. Maybe on 2 - cylinders and shakes around a lot at idle (hence the Harley analogy) also has an unusual exhaust note at idle (not the normal flat four sound) just like a Harley, it's the best description I can come up with short of attaching a sound byte.
I will start checking it out this week end but wondered if anyone has a good check list. A starting point from experience.
It supposedly had plugs and wires recently.
Could be an injector(s)?
Is there a common source of vacuum leaks (must be a big one)?
Could it have a burned exhaust valve or wrong clearance?
No smoke from the exhaust
No knocks or taps (almost too quiet!)
Any assistance would be appreciated. Thanks, John aka Kenneth
