Banks Power Cummins Motorhomes: (Diesel ’93 - 98 B5.9L & C8.3L) PowerPack & Stinger systems w_Twin Ram Manifold 5.9L, 190-210-230-hp rated - Manual (Page 16)

16 p.n. 96385
CHECkING ENGINE PERFORMANCE
go over the entire installation as a precautionary
check to ensure that all clamps are tight, wiring
and hoses are properly routed, and connections
are tight. start the engine and allow it to warm up.
drive the vehicle under light load (normal around
town driving) for 20 to 30 minutes, and listen for
any exhaust leaks or rattles, or intake boost leaks.
shut off the engine and re-tighten all intercooler
and turbocharger boost clamps. These connections
may have loosened with time, and if leaking, will
cause a drop in boost pressure with a loss in
performance. check that clamps are properly
positioned on hoses, and periodically check
tightness of hose clamps at regular maintenance
intervals, such as when the oil is changed.
Observe the operation of the boost and pyrometer
gauges while driving under varying conditions.
Turbocharger boost pressure will increase as a
function of load and engine rpM, thus the engine
will produce little boost while cruising at light
throttle, with maximum boost while climbing
hills heavily loaded during acceleration. note the
boost level seen during hard acceleration with
a given load. if performance seems to have
deteriorated sometime in the future, the maximum
boost figures may be compared to see if boost
has dropped off. lower boost may be caused by
turbo ducting leaks, a malfunctioning wastegate
or fuel injection pump, or a dirty air filter. Typical
maximum boost pressure settings for the dodge/
cummins diesel will vary considerably with stick
or automatic transmission options, year model of
vehicle and altitude.
use your pyrometer (exhaust gas temperature)
gauge to monitor exhaust gas temperature (egT)
in the engine. at idle, exhaust gas temperature
will be very low, perhaps only 300 degrees F. as
the engine is accelerated for higher speeds with
greater loads, the egT will rise. The highest egT
will be seen under maximum load at full throttle,
such as climbing a steep grade with a heavily
laden vehicle. use caution if your pyrometer
reading approaches 1300 F, with 1350 F being the
absOluTe MaXiMuM! exceeding these figures
for more than a brief moment may cause engine
damage.
if the vehicle reaches maximum egT under these
conditions, downshift the vehicle to reduce load,
or back off the throttle.
FUEL LINE BLEEDING PROCEDURE
if injector lines have been disconnected, the engine
may not start due to air in the lines or it may run
erratically until air is purged. if the engine will
not start after 30 seconds of cranking, allow a 2
minute starter cooling period, followed by another
30 seconds of cranking. if the engine will not start
after several of these cycles, bleed the fuel system
as follows:
A. loosen the bleed bolt in the top of the forward
banjo fitting above the fuel filter.
B. Operate the rubber push button primer on the fuel
transfer pump until fuel exiting the bleed bolt is
free of air. Tighten the bleed bolt to 6 lb-ft. of
torque.
C. crank the engine for 30 seconds followed by a 2
minute cooling period. repeat this procedure
several times as required to start engine.
D. Once engine starts, bring engine speed slightly
above idle for 1-2 minutes to bleed additional air,
then allow to idle.
if the engine still will not start or runs erratically
after this procedure, bleed the high pressure lines
while observing these safety precautions:
A. place vehicle in park or neutral with parking
brake set. Vehicle may start during purging
procedure.
B. Do not bleed lines on a hot engine. Do not allow
fuel to spray on a hot exhaust manifold.
C. high pressure fuel spray can puncture your
skin. Wear goggles and protective clothing. avoid
contact with fuel spray while bleeding lines.
Bleed air from one high pressure injector line
at a time as follows:
A. slightly loosen the line nut at the injector end of
the line.
B. crank the engine until all air appears to be
bled from the line. Do not crank for more than
30 seconds. Wait 2 minutes between cranking
intervals.
C. Tighten each injector line nut to 22 lb-ft. of
torque before moving to the next injector line.
Note: engine may start and run while cranking
to bleed air. Continue the air bleeding procedure
on the remaining injector lines with the engine
running, bleeding them one at a time until the
engine runs smoothly.