The camshaft is run from the crankshaft via a timing belt or chain. The crank moves the piston and the cam moves the valves. These must be timed in order for the valve to open at the right moment in relation to the piston.
2006-11-29 11:49:29
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answer #1
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answered by michalakd 5
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Because the camshaft controls the valves which control when fresh air is let into the cylinder and exhaust gasses are let out. If the camshaft is not aligned with the crankshaft, they valves will not open at the correct time and the air will not flow the way its supposed to. Also, in many engines, the distributor(which controls when the spark is sent to each cylinder) gets its 'coarse' timing from its orientation with the camshaft. If all of these orientations are wrong, the engine will not run.
2006-11-29 11:55:19
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answer #2
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answered by Larry R 1
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this is called engine timing. mechanical timing . and is very important for the operation of the engine. the camshaft opens and closes the engine valves. allowing air and fuel to enter the cylinder and exhaust to exit the cylinder this will occur when the pistons are on there way down for for intake and power. and when they are on the way up compression and exhaust. valves will be closed on power and compression intake valve open on intake, and exhaust open on exhaust. aligning will synchronize the events hope this helps. sometimes when timing is out engines may suffer damage as in the case of interference engines. no clearance between valves and pistons. ouch!
2006-11-29 12:14:13
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answer #3
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answered by samuel b 2
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so the engine will start...the engine has 4 strokes..they are intake,compression,power and exhaust..you need to align them cam shaft and crank shaft because the cam shaft opens and closes the valves in relation to the position of each cylinder. if the piston is on the way up and a vavle opens, great damage can result when the valve and piston meet. amd when the piston is on its way down the valve needs to open to allow the air/fuel mixture in so it can be compressed to create power to make the engine go..hope this helps..
2006-11-29 11:51:04
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answer #4
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answered by smartassguy2_68 1
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the camshaft has to turn once for every two revolutions of the crank. they must turn insynk. otherwise if the intake valve is closed while the piston is trying to get air and fuel in it wont be able to. and if you dont you can bend a valve, which sucks.
2006-11-29 11:49:46
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answer #5
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answered by chevy69 2
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because this is what times the valves and the pistons so the engine can fire ,and release its combustion ,and draw fuel in,,other wise it would never run right if they weren't aligned up right on it,and if one jumps timing on either gear the cam or the crank shaft,,it wont run right until it has been put back the right way ,,good luck,,i hope this help,s.
2006-11-29 11:51:25
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answer #6
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answered by dodge man 7
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Because you want the correct valves to open at the correct time in relation to the piston cycle.
2006-11-29 11:48:54
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answer #7
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answered by Anonymous
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So the the pistons and valves work together. Called valve timing.
2006-11-29 11:48:56
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answer #8
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answered by renpen 7
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For the timing, so that your valves open and close at the correct points of the piston stroke
2006-11-29 11:50:52
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answer #9
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answered by Anonymous
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Google.
2016-03-29 16:25:49
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answer #10
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answered by ? 4
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