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Knocking noise, shop says it's a top end issue..
About 18 months ago, I was driving my 2006 mazda 6, V6, manual, near O'hare airport. With 138,000 miles. Driving along I had a sudden loss of power, which recovered shortly afterwords, then the engine died.
I pulled over, attempted restart. The car started and had a loud ticking noise. So I had the car towed to my favorite shop.
Needing a car, I went and got a new car. Last night, I went and tried to do my own work on the car.
I have video of the engine running... but low post count..
The shop said it was a failed cam bearing, in the rear bank. the noise appears to come from the front bank, and seems to match the cam drive speed, rather than crank speed.
What would ~you~ do?
Here's the options I'd like to get advice on:
First, new (used) heads. Is this a sane option? Which heads are compatible? (finding v6 mazda engines is difficult...)
Second, new (used) engine. Which engines are a direct swap?
Third, repair of the existing heads. Cost? Time?
Finally, "give up, sell it to the junker place."
So what would you do, what should I do?