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should be in between intakevalve movement and exhaustvalve movement

Yes, valves should be closed.

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12y ago

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Where should the cam position be when setting timing marks on a 1994 Honda Civic 1.5L sohc?

#1 piston should be at TDC and both valves closed (compression stroke)


Can a retarded engine cause low compression?

If the timing is retarded due to cam and crank timing, the answer is YES. If it is due to distributor or ignition timing NO. Compression is produced mechanically when all the valves are closed during the compression stroke of the piston. If all is well (rings and valves), you should achieve optimal compression from the engine. Almost all gasoline engines require a least 80 psi to fire the cylinder.


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To determine if the number one cylinder is on the compression stroke after the timing belt has snapped, first, turn the crankshaft manually to align the timing marks on the crankshaft and camshaft. Next, remove the spark plug from the number one cylinder and place your finger over the spark plug hole; you should feel air being pushed out as the piston moves up, indicating it's on the compression stroke. Additionally, you can observe the position of the piston through the spark plug hole; it should be near the top of its travel when on the compression stroke.


What In a four-stroke engine the timing gears control?

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Where does rotor button point to when installing distributor in motor?

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Does rotor point to number 1 when timing marks are lined up?

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