12.7 Detroit loss of fuel pressure

I think you've ruled everything out but the pump. Ill bet when it arrives, it'll start working right again.

 

I've had one that The High Pressure Fuel Pump Grenaded. Tech replaced 6 injectors, Fuel Filter Housing, High Pressure Fuel Pump and claimed he cleaned all the lines, cleaned the Fuel rail, and cleaned the metal out of the Fuel Tanks. Apparently he didn't, 6 days later the truck came back with low fuel pressure and the filters kept draining. The small catch fuel filter was back full with metal. The tanks were full of metal and so were the lines. $10,000 later we replaced the same components he replaced and I made sure to clean out all the metal. Trucks been running strong for 2 months now, no problems. This may not be your problem. But just a heads up, Detroit fuel systems will throw you in a loop

 

That's the Sound when the pump is going out. In the small filter on the fuel filter housing, do you see any metal pieces? That filter is supposed to catch most of it. ( Which it don't, it spreads throughout the system quickly. ) If you don't see any, you are in luck and may be able to R&R the HP Fuel Pump and be back in business. If you see any sign of metal pieces, go ahead and clean out the system.

 

Series 60 just have a 2 vein mechanical pump. It's a very simple system, unlike the DD15.

 

Them 60 series are the best motor around. Too bad we don't see that many of them anymore. Just learned to do a overhead on them with a camshaft and rocker assembly replacement. It's easier then I thought. Besides the previous mechanic decided it was a great idea to silicone EVERYTHING. So cleaning down the in timing cover to get the silicone out was fun.

 

That looks like an oldie but goodie. DDEC II.

 

You got it! When I put it in, there was a DDEC3 available for about $1,500 more. But it would have cost a lot more to convert the truck to work with a 3, so I went with the 450 hp 2. They couldn't get it to run in my truck, so they switched ecm to my 500 hp tune. I love it!