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DT530E crank no start
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WAYNE0224
Posted 9/18/2024 07:21 (#10894732 - in reply to #10894341)
Subject: RE: DT530E crank no start


west central ohio
nickalousgg - 9/17/2024 21:31

WAYNE0224 - 9/17/2024 19:53

I see that you said that injectors were done about 1500 hrs ago.. But what we would do when they just crank is give them a small hit of either, and see if they take off. If the injectors o-rings are slightly leaking, it will cause this condition, and the either will spin the HP oil pump enough to over come the leaks. Next, I would check the HP oil regulator (IPR). You need over 700psi to fire off the injectors at start up. The wiring to this solenoid is known to fail/ break right at the solenoid. Others have mentioned that ECM power and ground are very important. In the truck application the FICM was fused separately in the battery box. IDK how your machine is set up, but I would check the easy stuff first (FICM/ECM fuses) good luck.


Wayne, I have it the ether test. It started and ran on just the ether but then died. The fuses are both good by the starter along with the connections. I did replace the IPR solenoid. I get 12v there at start up also.
OK. I would try to put a 0-3000 psi gauge in line with the hp oil feed to the head (braided hose) . You need to see if you are making oil with the pump (min 700 psi). Also as others have mentioned the cam position sensor can cause a no start, and is fairly cheap/easy to replace. Here is the normal failures I have come across with these in trucks in order of most common to least. 1 power and ground to ecm. 2 IPR valve / solenoid wire, 3 Cam position sensor. 4 fuel transfer pump failure. 5 fuel check ball and screen assembly at hand primer. 6 HP oil pump failure. 7 FICM/ECM failure......... one thing we would find with the ficm/ecm is you will pull the 2 big heavy wire plugs off and the pins would be corroded in the plug. It's a easy check , just don't over tighten the center bolt when re instslling
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