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Old 01-24-2014, 11:20 PM   #1
verdugoe923
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tdc ?

im new to this forum and have questions on 2012 focus 2.0,the engine I have ripped apart due to loss of compression,im having trouble finding any sighn of timing mark information can someone please help me on this matter it would be much appreciated,also being that their is no key way on the crank what drives the chain.


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Old 01-25-2014, 09:30 AM   #2
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An easy way to find TDC without timing marks is to pull the spark plug of #1 cylinder and stick a clean pen or rod into the cylinder and feel the stroke of the piston, if you can pull the valve cover and watch the valves to ensure its at TDC for the compression stroke.
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Old 01-25-2014, 10:17 AM   #3
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Quote:
Originally Posted by verdugoe923 View Post
im new to this forum and have questions on 2012 focus 2.0,the engine I have ripped apart due to loss of compression,im having trouble finding any sighn of timing mark information can someone please help me on this matter it would be much appreciated,also being that their is no key way on the crank what drives the chain.
What drives the crank timing chain gear is the timing chain gear gets pinched between the crank and the hub/balancer , that pressure pinched between the crank and hub/balancer turns the timing chain gear which turns the chain

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Old 01-25-2014, 11:46 AM   #4
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what direction do the lobes on the cam aim for compression stroke?
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Old 01-25-2014, 12:33 PM   #5
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Turn the engine in the direction that it runs, and watch the valves the intake valve will open durring piston downstroke for the intake then both valves will close for the conpression stroke upwards, the valves will remain closed for the downward power stroke then the exhaust valve will open for the exhast stroke the its repeats.
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