My wife's 08 Expedition has developed a leak between the cat and manifold on passenger side....replaced the cat a little over a year ago but now leaks. I have loosened it and moved it around numerous times but it will not tighten up to stop the leak. Could the manifold be the issue?
my 2008 expedition has develpoed a bad knock, has about 120,000 on it. Change oil regularly....knock sounds like it is coming from bottom of engine or exhaust....put fresh syn oil and some lucas oil treatment thinking it was a stuck valve or something. It is bad when you first start the vehicle...
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