Detroit Diesel MBE 4000 Service Manual page 571

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The batteries are damaged or weak.
The cranking speed is not set correctly.
No intake air preheater is installed, and it is too cold to
start without one.
The intake air preheater is malfunctioning.
The camshaft TDC sensor and/or the crank angle
position sensor are out of adjustment.
The camshaft TDC sensor and/or the crank angle
position sensor are damaged.
There is air in the fuel system.
The air filter is clogged.
The fuel filter is clogged.
The exhaust brake valve is malfunctioning.
The valves are not adjusted properly.
There are other problems in the fuel system.
The fuel tank is low or empty.
There are leaks in the fuel lines.
The fuel filter is clogged.
The fuel line, the fuel pre-filter, or the screen in the fuel
tank is blocked.
The camshaft TDC sensor and/or the crank angle
position sensor are out of adjustment.
The camshaft TDC sensor and/or the crank angle
position sensor are damaged.
There are other problems in the fuel system.
All information subject to change without notice.
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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Problem—The Engine Cranks, But Won't Start
Cause
Problem—The Engine Starts Only After Cranking for a Long Time
Cause
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MBE 4000 SERVICE MANUAL
Remedy
Test the batteries. Replace them, if needed.
Bring the vehicle to an authorized dealer for service.
Install an intake air preheater.
Check the intake air preheater, and replace it, if
necessary.
Push both sensors into their holes as far as they will go.
If this does not solve the problem, bring the vehicle to an
authorized dealer for service.
Bring the vehicle to an authorized dealer for service.
Check the fuel lines for air pockets. Bleed the fuel
system and start the engine.
Clean or replace the air filter.
Replace the filter element.
Have an authorized dealer check the operation of the
valve.
Check the valve lash.
Bring the vehicle to an authorized dealer for service.
Remedy
Add fuel and bleed the fuel system, if necessary.
Check the fuel lines for leaks and repair them, if
necessary.
Replace the filter element.
Clean and bleed the system. Have the fuel lines and
filters checked by an authorized dealer.
Push both sensors into their holes as far as they will go.
If this does not solve the problem, bring the vehicle to an
authorized dealer for service.
Bring the vehicle to an authorized dealer for service.
Bring the vehicle to an authorized dealer for service.
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