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PROMOBILE · 03-17-2026, **(Subject: Dd15 crank no start )**

I have a 2012 DD 15 that we have a crank no start issue. The truck came in for a lube oil filter, and after changing all the fluids and filters we found that the truck would crank, but no start tried putting a purge tank on it to purge out the air and still crank no start. Upon taking apart, the three filter fuel system I found that the check valve was bad. Tried to get parts but ended up replacing the fuel filter housing to a two filter system upon doing so still crank no start performed a fuel integrity test, and found that it had no low side pressure. We then therefore replace the injection pump and low pressure pump. Still crank no start still zero psi on low pressure side 275 to 325 bar on high-pressure side we then replaced injectors and it fired for about 10 seconds then shut off and again crank no start no low pressure. We are kind of at a loss with this thing.

Rawze · 03-17-2026, **(Subject: Dd15 crank no start )**

(03-17-2026 )PROMOBILE Wrote: I have a 2012 DD 15 that we have a crank no start issue. The truck came in for a lube oil filter, and after changing all the fluids and filters we found that the truck would crank, but no start tried putting a purge tank on it to purge out the air and still crank no start. Upon taking apart, the three filter fuel system I found that the check valve was bad. Tried to get parts but ended up replacing the fuel filter housing to a two filter system upon doing so still crank no start performed a fuel integrity test, and found that it had no low side pressure. We then therefore replace the injection pump and low pressure pump. Still crank no start still zero psi on low pressure side 275 to 325 bar on high-pressure side we then replaced injectors and it fired for about 10 seconds then shut off and again crank no start no low pressure. We are kind of at a loss with this thing.

no-start condition aside...
AN FYI:...
I SURE HOPE LIKE ALL H3#ELL THAT YOU DID NOT REPLACE THE OIL FILTER AND THE FUEL FILTER AT THE SAME TIME WHILE TRUCK WAS SHUT OFF!!!!> ... YOU ARE ASKING FOR A SERIOUS LAWSUIT IF YOU DO IT THAT WAY!!.

IF YOU ARE.. THIS IS YOUR ONE AND ONLY WARNING!!!.. TO CHANGE HOW YOU DO SERVICE DD15'S FROM THIS POINT FORWARDS!!!.

Its based on a well known issue with them as they get older,... and even Detroit I think has procedures for oil change that now warn against this if I am not mistaken...
INFO: https://rawze.com/forums/showthread.php?...9#pid12489

Rawze · 03-17-2026, **(Subject: Dd15 crank no start )**

As far as the no-start goes... did someone pump the fuel primer by hand about 20-30 times after the fuel filter change?.

What does the oil pressure and fuel pressure show (in troubleshooting software) while connected to the ecm and it cranking?.

I.E.>
On red engines, if the fuel pressure while cranking is below 50-psi... engine will not even open injectors to fire a cylinder.

PROMOBILE · 03-18-2026, **(Subject: Dd15 crank no start )**

Truck has low side pressure on gauge but will not read on computer, new harness, new sensor, new computer, new low and high pressure pumps. I don’t get why I can’t get low pressure reading. Looking for ideas

PROMOBILE · 03-20-2026, **(Subject: Dd15 crank no start )**

(03-17-2026 )Rawze Wrote: As far as the no-start goes... did someone pump the fuel primer by hand about 20-30 times after the fuel filter change?.

What does the oil pressure and fuel pressure show (in troubleshooting software) while connected to the ecm and it cranking?.

I.E.>
On red engines, if the fuel pressure while cranking is below 50-psi... engine will not even open injectors to fire a cylinder.

The oil pressure while cranking is reading 60psi

The fuel pressure on the high side is 275-305

The fuel pressure on the low side is reading 0 on the ecm but with a manual guage it reads about 65-75 psi

we put a new engine harness and replaced ecm after pinning out the old one and find it was faulty. Low pressure sensor was tested on anothe truck we have here and works fine.

PROMOBILE · 03-30-2026, **(Subject: Dd15 crank no start )**

Still looking for any info if anyone has any other ideas

~~komatsudiag~~ · 03-30-2026, **(Subject: Dd15 crank no start )**

when you turn ignition on does thr truck run its calibration? can you hear valves opening and closing? if so, is the engine light on when you turn ignition on? it should come on as a check. rpm moving? most likely injection pump got damaged from ectended cranking. check for metal debri on pump actuator.

PROMOBILE · 03-31-2026, **(Subject: Dd15 crank no start )**

(03-30-2026 )komatsudiag Wrote: when you turn ignition on does thr truck run its calibration? can you hear valves opening and closing? if so, is the engine light on when you turn ignition on? it should come on as a check. rpm moving? most likely injection pump got damaged from ectended cranking. check for metal debri on pump actuator.

It does do its check when the key is turned on. The injection pump was just replaced as we thought the same thing. no engine light or codes as of now and no metal in fuel system. Its really got us stumped. i have even contacted freightliner and they are just as confused as us. This has the 3 filter to 2 filter conversion on it and dont have alot of info on that and the ecm tells the computer that it has no low side pressure even though it does when checking mechanically with guage. The sensor is good cause i had it installed on another truck and tested it that way. has a new engine harness.

Bods · 04-07-2026, **(Subject: Dd15 crank no start )**

I know this has been ongoing for a while now, it could still be faulty injectors. These are really sensitive to being exposed to air. I've also read about guys having 6 faulty injectors out of the box before, so you might have to throw another set at it and see about hassling Detroit or Freightliner or whoever about warranty for the first replacement set.