Using a compression tester in the cylinder all the way to the pass side, turn the engine over by hand until you see pressure rise. This gives you the start of the compression stroke. Remove the compression tester. (If you don't have one, put a finger the the spark plug hole and wait until you feel pressure. (Do not use the battery to turn it over, only do it by hand.) Once you are starting the compression stroke, put a thin but long screw driver or anything straight but easy to put in the spark plug hole.int that first cylinder.
Again, turning over by hand, turn it until the screw driver is at its highest point. You are at TDC.
Hope this helps
SOURCE: 1999 Ford Escort 2.0L Timing Marks
http://www.autozone.com/az/cds/en_us/0900823d/80/13/b1/0d/0900823d8013b10d/repairInfoPages.htm
Try this link!!! Hope it helps!
SOURCE: timing in my car off
looking at the front of the engine the no.1 cylinder is the first one closest to the front of engine, if it is in a V type layout, then it is the closest on the right side. You should be able to find tdc by looking at the marks on the harmonic balancer. You also have to be sure that it is on the compression stroke and not the exhaust stroke.
SOURCE: How do I find TDC through the #1 cyl spark plug
Probably the safest way I can think of is to use a plastic drinking straw. Place it in the spark plug hole (best done when you can see the piston) and rotate the crankshaft slowly by hand. When the straw stops rising you are at TDC. It is better done with a dial indicator but most people don't have one. There are at least three other ways to do this but this is the easiest and safest.
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