For the 3.0 liter " Vulcan " V6 engine in a 1997 Ford Taurus :
( .042 to .046 inch )
Confirm with the VECI ( Vehicle Emission Control Information ) decal located in the engine compartment )
0.042 to 0.046 inch
45
The spark plug gap, for your 2004 Ford Taurus 3.0 liter engine, is .009. Most spark plugs will come pre-gapped.
54
The spark plug gap for a 2005 Ford Taurus 3.0 is recommended to be set at 0.44. The actual setting varies based on the specific spark plugs used.
The recommended spark plug gap on a 2005 Ford Taurus 3.0 SOHC w/ Flex Fuel engine is .050" (1.27mm), according to the spark plug manufacturer DENSO.
Looks like they just unbolt by two bolts and go over the spark plug.
I have a problem to change a spark plug.
.054
Spark Plugs, Spark Plug wires, PCV Valve
firewall 1-----2-----3 4-----5-----6 front of Ford Taurus
motorcraft.com shows the spark plug gap for a 2003 Ford Taurus 3.0 L - DOHC - V6 as ( .056 inch ) The 2003 Ford Taurus owners manual shows ( .052 - .056 inch ) for the 3.0 L - DOHC - V6