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Engine compression testing #65513 07/08/02 03:25 AM
Joined: Sep 2001 Posts: 8 Montr�al (Qu�bec) F Fran�ois OP Junior Member
OP Fran�ois Junior Member F Joined: Sep 2001 Posts: 8 Montr�al (Qu�bec)	Can anybody tell me how compression is mesured AND what should be the result on the regular Duratec 2.5L at 30,000 miles . I have to get mine checked ASAP. See (Water pump failed at 53kk) for history Both in April Ford Countour SE 5MTX 1996/27kilo. I intend to by a set of MSDS headers with some good low rumbling tone like at South County Motor. I having the upper intake extruded &honed. Change TB with SVT. By a Pro-Flow 75 maf. Diablo chip on Top. IF and only if I'm happy with the results. A Quaifle T/b diff. IF my Girlfriend can still stand my driving (she does not drive) a New Radiator (the one that pushes 11 PSI into the intake manifold) I think that this engine would be proud to put 300hp on the asphalt.

Re: Engine compression testing #65514 07/08/02 05:05 AM
Joined: Nov 2000 Posts: 2,683 Roanoke,VA - -HWCM- Member
-HWCM- Member - Joined: Nov 2000 Posts: 2,683 Roanoke,VA	This is one. What you do is pull your spakr plugs one by one and then screw this hose into the spark plug socket.Pull the fuel pump fuse and crank the engine for a few seconds.the pressure shown on e=the gauge is your compression for that cylinder.Repeat for all cylinders.Haynes probably has the tolerances. Here I have it for you:Lowest reading cylinder must be within 75% of highest cylinder. Hell it doesnt give specs though. Howard 1998 Silverfrost SVT #1612 June mods: 17" ADR RS Limited Limix Wheels with 215/45/17 Yokohama AVS Sports

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