Detroit 60 crank no start

If it’s lost prime, the fuel filter will usually be only half full. Fill them. An easy way to prime it is putting shop air into the fuel tank. Just wrap a rag around a blow gun, blast away, start cranking and it will push fuel into head and start.

 

Also no mention of cleaning the frame grounds from the battery. If bad dash lights cel etc. won’t light up. That was my problem. Everyone on here helped me figure it out.

 

I got the same issue. I replaced the check valve behind the head and the heated fuel filter housing. If I let it sit for more than 2 days it's a very very hard start or no start. Plenty of juice going to the starter. Doesn't matter what the temperature is like outside, whether it's very cold or summertime. It never fails after two days of sitting it doesn't want to start without starter fluid.
This is a 12.7 DDEC4 in a 2016 Freightliner Columbia.

 

Our shop did a in frame on the truck I drive, 60 12.7. They replaced the SRS and TRS with new aftermarket sensors, I drove it home about 12 miles next morning it wouldn't run , turn over but not run . Turns out being one of those sensors. Replaced both with sensors from Detroit no problems after that.

 

You just gave me an idea. I’m going to try shutting off the valve at the secondary fuel filter. See if it still loses prime or not. That might at least tell me where it’s sucking air from. Between the shutoff and head, means it’s a leaking line, cracked filter head, or fuel pump. Between shutoff and tanks, it’s a line, tank shutoff valve or pick up tube. I tried pressurizing the tanks, looking for fuel bleeding out somewhere. Whatever it is, it’s something simple, but hard to pinpoint.

 

In general I seem to have terrible luck with stuff like aftermarket sensors. I don't even waste my time with anything other than OEM for that stuff now.