Posted by ah0792 on April 03, 2013 at 11:03:52 from (74.5.221.195):
Are both valves closed when the #1 is at TDC?[/quote:f24acb3a71]
At TDC #1 valves are closed. Turn the crank 180 and #3 valves are closed. Turn it another 180 #4 valves one is open one is closed. Turn it another 180 #2 valves one is open and one is closed. Could the new cam have the lobs in the wrong place? I also checked the rotor button when pointing at #1 and #3 the valves were closed but when pointing at #4 and #2 the valves were one open one closed on both #4 and #2. I'm going to do a compress check.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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