Question about Caterpillar D399 Generator Drive Engine

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I have cat D399 wont start? when i crank it with air starter its run as long i hold the starter on whehn release the starter botton stopped?

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3 Answers

D399 cat engine can not start. It is refusing to start. It is a diesels engine for pumping sand in a dredger and it is 16 cylinder engine


check for water in the fuel , blocked fuel filters , air in the system, air in injector lines
stop solenoid inoperable
call the cat service dealer

Jan 17, 2018 | Cars & Trucks

1 Answer

What could make d399 cat engine not to start when the battery is new. It is 16 cylinder cat engine for pumping sand, in a king dredger and it is a marine engine. We try to start the engine and it can not...


First, does the engine's starter motor run when you attempt a start? If not, check the voltage reaching the starter motor.

If the starter motor turns over the engine, you need to investigate three things, all of which are needed for operation.

--Fuel: is there fresh Diesel fuel in the tank? Is the fuel filter clogged? If there's an auxiliary fuel shutoff valve, is it open to allow fuel to flow? Is the fuel pump working? Is the air temperature so low that the cold has caused the Diesel fuel to gel? You may need a cold-weather additive for the fuel.

--Air: is the engine's air filter clogged with dust? Is the engine's air
intake blocked?

--Ignition: are the engine's glow plugs receiving electrical power and thus heating?

--Battery: it's unclear how you tested the battery. A voltmeter reading can be misleading because the voltage reading under no-load conditions may read okay, but the battery voltage may drop to a too-low value when heavily loaded by the starter motor and glow plugs.

Jan 17, 2018 | Miscellaneous

1 Answer

What could make d399 cat engine not to start when the battery is new


If it's cranking over fine with the new battery and will not start, then it isn't getting fuel. Check that power is connected to the fuel shutoff switch on the engine. You have to have power to this shutoff switch to open the fuel to the fuel rail and injectors. Otherwise, it will just crank and never start. AND if it has a blower on it, be sure the emergency shut off flap is open inside the blower. That is controlled by a locking lever on the flap outside the blower. If it's belching smoke and will not start, the flap is closed and it can't get any air. Open the flap to the lock position on the lever. Have fun with it Brother.

Jan 17, 2018 | Cars & Trucks

1 Answer

I have a 2005 mitsubishi outlander. It wont start after I ran out of gas. I bought a new battery but the car still wont start


It's still out of gas until the lines are purged of air. The fuel pump has to run awhile to build up pressure. Keep cranking. If you can take the small gauge wire off the starter easily,all you have to do is turn the key to the start position and hold it there for a while. Listen for the fuel pump. When it slows down or stops then reconnect the wire and it should start.

Sep 11, 2014 | 2005 Mitsubishi Outlander

1 Answer

I have cat D399 wont start? when i crank it with air starter its run as long i hold the starter on whehn release the starter botton stopped?


if i remember right there is a solenoid valve on them when starting it has to be down for engine to start. if it fails it dont get the pressure needed to start. when engine is running and warmed up it opens. cannot remember were it is but I used to have one a long long time ago. and it was this fault.

Jan 02, 2014 | Caterpillar D399 Generator Drive Engine

1 Answer

Engine has air supplied starter and has no air in fuel system why won't it start


Are you able to crank it?
Also check the engine block heater for functionality. It won't start else. Also I am assuming all fuel lines are primed? try cracking the fuel line to each injector as you crank it, and make sure the fuel delivery pump is working, This will also bleed the air from the system.

Oct 09, 2013 | Caterpillar D399 Generator Drive Engine

1 Answer

You hold start botton it runs but no heat, you release start botton it stops


Check the wires to the switch on the motor, or the switch itself is not "clicking". Unplug the appliance before removing any covers.

Jul 21, 2009 | Whirlpool LGB6300 Gas Dryer

1 Answer

Starter wont stop spinning


The starter relay may be sticking on start. Get someone to start truck and when problem starts hit relay lightly wih hammer. A cheap voltmeter will tell you if relay is sticking or still energised from ingnition switch after key release from start position.

May 04, 2009 | 2001 Ford Expedition

1 Answer

Ford starter won't disengage even after the ignition is switched


sounds like to me that the ignition is bad and sticking on the start positon

Jan 04, 2009 | 1985 Ford Mustang

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