Q: Camshaft vs timing chain failure symptoms 2009 Acura TSX

asked by on March 15, 2017

what are symptoms of bad timing chain and camshaft

My car has 130000 miles.
My car has an automatic transmission.

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Hi there - wear or damage from timing chain components can be indicated by irregular metallic noises - rattling or tapping from the front of the engine. Worn timing chain guides, a weak chain tensioner, stretched chain - these all create slack in the timing chain as it moves around the various sprockets. Severely worn timing chain gear can also cause cam timing issues, which can cause performance problems, and will set the Check Engine light in almost all cases. A worn camshaft will tend to show itself as reduced performance - worn camshaft lobes don’t allow as much valve lift to let fresh air and fuel in, or combustion gases out. A worn camshaft generally will not set a Check Engine condition. For diagnosis - I recommend a engine inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

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