How many ft-lbs of torque...

[rob454]

For the spark plugs in the Vibes? For some reason, mine keep loosening after a few hundred miles. Scary.I usually tighten them until they stop. (About a half turn) But I am afraid to tighten them too much because I have stripped out one in the past with another car. Heh, I guess I have a tuneup phobia now since the incident.

[Wolfman213]

According to the Spark Plug Change Thread it's 18 ft/lbs for 1zz and 13 ft/lbs for 2zz.

[rob454]

Thank you.