Thanks guys! He is chasing down vac lines (there are a lot of them on this engine, although theyve all been replaced with silicone at some point) and intake leaks. For me to buy this car I mostly want to rule out a cracked head, block, or HG as I don't have time to fix that. Sensors, fueling, and normal maintenance all to be expected in my book (its a 20 year old german sports sedan, I know what im getting into there). The 3.0 is known to be a really reliable engine, so fingers crossed. Only fuel that has been in it is 93, definitely no avgas.

__________________
TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth