Quote:
Originally Posted by Wret
At 120K You're spark plug tube o-rings likely need replacement if they haven't been done already. That's about the time mine started leaking, dripping on the catalytic converter and creating puffs of smoke wafting from under the right side.
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Mine have already been replaced once at 30K (from maintenance records) and I'm at 60k and it needs it again on the same side. Don't know if 2.7 has more issues with the tubes/o-rings or just my specific car.
Make sure you have some good angled attachments for your wrenches and do the spark plugs at the same time while you are there...