MotorVac DieselTune 4000 User Manual
Page 20
200-8241 REV. 2
20
DieselTune 4000 Operators Manual
7.
As shown in
FIGURE B
on the next page, connect the appropriate adaptors at the points listed
in
Step 6
.
8.
As shown in
FIGURE B
on the next page, connect the
OUT/FILL (RED)
hose from the unit to
the adaptor on the pressure line going into the engine’s fuel supply side.
9.
As shown in
FIGURE B
on the next page, connect the
RETURN (BLACK)
hose from the
unit to the adaptor on the return line coming from the engine’s fuel return.
NOTE
Use an adaptor to plug off or loop back the fuel lines going to the
tank to avoid any spills.
NOTE
Some fuel systems have two return lines; one from the injector
pump and one from the injectors. When connecting to these
types of systems, verify that both return lines have been
captured. Usually they will join together at some point before
going back to the tank.
NOTE
Fuel filters and water separators in the vehicles fuel supply line
should be bypassed whenever possible, as they can interfere
with mixture ratios and may release contaminants into the
engine during cleaning. But when they can not be avoided
replace the vehicle’s fuel filter and add extra cleaner to
compensate for large filter housings.