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remove the spark plugs, get a really long screwdriver, or anything else that is long enough and put it in the spark plug hole so that its making contact with the top of the piston...
Then spin the crank over by hand. Youll notice that the screw driver, or what ever you have in the sparkplug hole, will start moving up or down.
Spin it until it the screwdriver goes up as much as it can, youknow the piston is at tdc when the screw driver starts to go back down.
Just verify youre at tdc by looking at the marks on the crank pulley, as well as making sure the cam lobes facing opposite directions. exhaust cam lobes should be "pointing" towards the drivers side fender and the intake towards the passenger side.
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