Mercury Optimax 115 Service Manual page 192

DIRECT FUEL INJECTION
5. If teflon seal requires replacement, use teflon ring installation tool 91-851980 to slide
new seal onto injector. Following installation of teflon ring, the teflon ring sizing tool
(91-851980-1) can be used to compress the teflon seal to aid in the installation of the
injector into the cylinder head.
a -
b -
c -
6. An ohm test of the direct injector may be made by connecting test leads to injector
terminals. Ohm reading should be 1.3
7. Carbon buildup on tip of direct injector may be removed by use of a brass wire hand
brush.
a -
b -
c -
Page 3B-44
b
f
Teflon Sealing Ring
O-ring
Teflon Seal
30
40 20
OHMS 15
60
10
100
5
200
0
20
30
10
10
5 15
40
0
20
VOLTS 0 4 6
8
2
10
0
DC AMPS
DCV ACV
X1
DVA
a
56003
a
Direct Injector
Direct Injector
Tip
d
c
a
a
91-851980-1
0.3 ohm.
b a
c
b
e
e
d - Seal Installation Tool
(91-851980)
e - O-ring
f - Teflon Ring Sizing Tool
(91-851980-1)
56017
90-855347R1 JANUARY 1999