T e c h n o l o g y , L L C
DIESEL PRO
®
245
TECHNICAL MANUAL FOR DTNA
8
www.davco.com
800-328-2611
Saline, MI 48176
P. O. Box 487
DAVCO Technology, LLC
F1353 REV B
VISUAL DIAGNOSTICS WITH CLEAR COVER
Fuel level is not at the top of the fuel filter.
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Normal - Do not change the filter.
Fuel level is at the top of the filter and appears to be full of wax.
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Change 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.
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Check 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 separator.
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Remove the check valve assembly. Clean or replace and retest. Check air leaks in the fuel system.
Fuel level is at the top of the filter. Low power.
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Change the filter at the first available opportunity.
There is a power complaint and the fuel level is below the collar.
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Check 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.
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Drain the water.
