Visual Diagnostics - Davco FUEL PRO 382 Technical Manual

T e c h n o l o g y , L L C
Fuel level is not at the top of the fuel
filter
ÎNormal - Do not change the filter
Fuel level is at the top of the filter and
appears to be full of wax
ÎChange the filter - Run the engine for
a minimum of 25 minutes at idle Do not
run at full RPM
Bubbles are seen flowing in with the
fuel
ÎCheck all fittings and lines from the
fuel tank to the fuel processor Check
lower and upper collar o-rings
Fuel drains back to the fuel tank when
changing the fuel filter or draining sepa-
rator
ÎRemove the check valve assembly
Clean or replace and retest Check air
leaks in the fuel system
DAVCO Technology, LLC
®

VISUAL DIAGNOSTICS

P. O. Box 487 Saline, MI 48176
TECHNICAL MANUAL
Fuel level is at the top of the filter Low
power
ÎChange the filter at the first available
opportunity
There is a power complaint and the fuel
level is below the collar
ÎCheck for a missing grommet at the
lower end of the filter or missing/broken
spring at top of filter
Water is noticed in the cover
ÎDrain the water If engine coolant is
visible, follow proper engine pressure
testing procedures to determine root
cause
No engine coolant flow to the Fuel Pro
heater
ÎCheck for closed cutoff valves at
the coolant lines to the fuel processor
Make sure the cab heater valve is open
Call 800-328-2611
12
FUEL PRO
www.davco.com F1271 REV C
Updated 09/05/2012
382
®