Timing belt is bad.
If the 3 cylinders are adjacient sounds like it may be a bad head gasket or bad head. Did vehicle overheat?
156psi or higher
no
need to know the compression on a 87 ford 2.3 liter 4 cyclinder
9.1:1 is the compression ratio for the 8.1
A chain
Double check the firing order, you may have a couple of spark plug wires crossed. Also do a compression test, you may have bad valves.
2
means its time to buy a Chevy
on top in front of eng on drivers side
I was looking on fordparts.com at the 2004 Ford Ranger with the 3.0 liter V6 engine and it doesn't list an EGR valve for the 3.0 liter like it does for the 4.0 or 2.3 liter
The compression ratio on a 1992 Ford Mustang GT 5.0 liter was 9:1