You need a compresson tester, it is like a pressure gauge and it comes with a threaded attachment, you remove all the plugs, remove the fuel relay, remove the wire from the coil to distributor, insert the threaded attachment of the compression tester instead of the plug one cyl at a time, and then crank the car. In one or two revolutions, the pressure should build up to a maximum level and stabilize. The minimum pressure in each cyl should be about 8.5 bar. The max diff between any two cyls should be 1.5 bars.

BUT, your problem is less likely to be compression related, check the basic things first. The car would start and run even if one cyl is not working, hust would run bad. Try spraying quick start fluid in the intake. Make sure you have sparks.

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Saumil S. Patel