1 MM
The spark plugs on a Ford Explorer are replaced by first disconnecting the battery. Remove the spark plug using a spark plug socket. Replace with the factory recommended spark plug.
.043
My 87 is 1mm. So around .8 to 1mm should be OK
the spark plug gap is .054in. for 2003 ford focus.
1mm
My 2002 Ford Focus ZX3 has a spark plug gap of .050" (1.3mm).
The spark plug gap for a 1996 Mitsubishi Lancer MR 1600 mivec should be set between 1.0 and 1.1 mm. A new spark plug will not need to be gapped as they are gapped at the factory.
The spark plug number that is in my 2003 Ford Ranger XLT is: AGSF34FP - Motorcraft.
Yes it be done by laser
A 1968 Ford Galaxie 500 with a 390 engine should use a spark plug such as an E3 brand spark plug. This plug should have a tapered seat with 18mm threads.
The recommended spark plug gap for a 2003 Ford Expedition 4.6 is .054"