Whats the difference between 1994 2.3 dual spark plug and 1988 2.3?
The difference is as follows; The 1988 Ford 2.3l came equipped
with; -A cylinder head that housed a single spark plug per
cylinder, and a "D" shaped intake port -A flat tappet camshaft -A
distributor with Ford's TFI ignition system The 1994 Ford 2.3l dual
plug came equipped with; -A cylinder head that housed 2 spark plugs
per cylinder (both fire simultaneously in a typical "wasted spark"
fashion), and a "swirl dam" intake port -A roller camshaft -Coil
packs in place of the distributor, and a crankshaft position sensor
housed inside the crankshaft pulley, commonly known as the "DIS"
ignition system (distributorless ignition system) not to be
confused with fords later "EDIS" system The switchover from single
plug to dual plug 2.3l Fords were as follows; -1988 and older
rangers are single plug -1989-1994 rangers are dual plug (1995-1998
2.3l dual plug rangers differ in many ways from the "early" dual
plug engines) -1990 and older mustangs are single plug -1991-1993
mustangs are dual plug Note; 1989-1994 rangers & 1991-1993
mustangs share an identical engine for all practical purposes.