Question about 2007 Mazda CX-7 Grand Touring

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Timing Chain Broke on my 07 CX-7 Grand Touring

May 18th I was driving about 30 mph and I heard a snap and the engine died. We had to tow it to a local mechanic. He said the timing chain broke and there is a 99% it messed up the valves and header. It has 87,000 miles on it so it is passed warrenty. The dealer told me it is probably a new engine. What's the chances it is just a break and not other problems? Has this been a problem?

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If the timing belt has broken it's more than likely you have some valve damage.
Not the end of the world.
Options are...Head overhaul, inc valve replacement.£££££££££
Or find a complete Cylinder Head in a breakers yard and swap.

Posted on May 20, 2009

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