Look at the 8th " character " of the VIN
An " X " is the 4.0 liter EFI - V6 engine which is an overhead valve / pushrod design
An " E " is the 4.0 liter SOHC - V6 engine
No you can not a sohc is not as wide as a dohc and you can not inter change a efi with the carb
40L = 40000cm3
The owners manual shows ( 5 W 30 ) for the 4.0 liter EFI and SOHC
The V6 engine has ( 6 engine cylinders ) * EFI and SOHC * The 5.0 liter V8 has ( 8 engine cylinders )
1995 Mercury Truck Villager Van 3.0L EFI SOHC 6cylThe Spark Plug Gap.032 (In thousandths of an inch)
For a 1997 Ford Explorer 4.0 liter V6 engine ( EFI and SOHC versions ) ( There are 6 spark plugs )
For a 1998 Ford Explorer : The 4.0 liter V6 engine ( either the EFI or the SOHC version ) ( have 6 engine cylinders )
firewall 3 - 6 2 - 5 1 - 4 front of Ford Explorer 4.0 liter V6 engines ( both EFI and SOHC )
On a 1999 Ford Explorer : Bank 1 is the passenger side of the engine ( 4.0 EFI / 4.0 SOHC / 5.0 V8 )
The 4.0 liter OHV engine ( EFI ) has ( 1 ) timing chain and the 4.0 liter SOHC engine has ( 3 ) timing chains
There were ( 2 ) different ( 4.0 liter V6 engines ) The 4.0 liter EFI ( the 8th " character " of the VIN is an " X " ) and the 4.0 liter SOHC ( VIN " E " )
Part of the answers is that the SOCH engine is the one with the sprk plug in the front only and the COCH engine is the twin cam 16 v. sprk plug on top