Compression is normally expressed in terms of pounds per square inch (PSI),...foot lbs would relate to twisting forces such as a spinning crank shaft. Two different animals.
EVOEvolution Engine (Harley-Davidson Motorcycles)
Depends on why there is no compression.
Works fine for Harley Davidson Evolution motors.
1984
When it was new it had 150 PSI. per cylinder
On your Ford Ranger with the 2.3 or 2.5 liter four cylinder engine , with Fords twin plug ignition system : The compression plugs are on the DRIVERS side of the engine
When testing engine compression and cylinder leakage, the unit of measure commonly used is pounds per square inch (psi). Compression tests typically measure the pressure generated within each cylinder when the engine is cranked, while cylinder leakage tests quantify the amount of air escaping from the cylinder under pressure. Both measurements help assess the engine's health and efficiency.
The engine on a Harley Davidson Heritage Softail is a twin cam 103. The engine produces up to 100 foot pounds of torque and is equipped with automatic compression release.
To test cylinder compression on a diesel engine, you'll need a compression gauge specifically designed for diesel engines. First, remove the glow plugs or injectors to access the combustion chamber. Then, insert the compression gauge into the cylinder, crank the engine for several revolutions, and record the pressure reading. Compare the results against the manufacturer's specifications to determine if the engine's compression is within acceptable limits.
Just did compression test on mine and the normal seems to be 160 -180
You may have compression on any cylinder where the valves happen to be closed, but you will not have compression on all cylinders. 1991 Sable does not have a 305 engine.
I need the spark plug gap for a 1340 evolution engine on a 1997 Harley Davidson Heritage springer soft tail