valve clearance
If both the intake and exhaust tappets are tight (no up or down play) then you are on the wrong stroke. You need to turn the crank another 360 degrees again until the T lines up in the timing mark hole again and you should be on compression stroke. Confirm this by moving the tappets up and down for both exhaust and intake. The amount of movement or play should be within specs from manufacturer using feeler guages.
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