[naz]

buy a compression tester, take off all the plugs and wires, take out the fuse that controls the FI (like.. in my honda it would be the No 38 10A PGM-FI Main Relay in underhood fuse box) yank whatever the equivalent in the focus is.. screw in the compression tester.. maybe oil it up a bit so you don't mess up the o ring.. get someone to go in the car, put the gas to the floor to open up the throttle fully and crank the motor over 5 times so you can get a reading

no clue what the reading or tolerance should be for a focus, but i think the 2.0L 16v motor has similar compression to a B18A so i guess maybe the b18a spec of 185psi nominal, max allowable variance of 25psi should be somewhat of a ballpark for you

you are doing some hardcore FI install right? you should try to get your hands on the factory shop manual for the focus.. not a haynes or chiltons.. the actual ford manual.. i found the integra manual online. it has so much more detail than the haynes or chiltons.. totally blows them out of the water..