My 1997 detroit 60 series 12.7 500hp suddenly loses power

The first thing I would do is change fuel filters. Then check CAC, Turbo, blocked fuel lines, there is an air pressure sensor that sit in the intake manifold that can get plugged or goes bad. After the fuel filters I would take it to a shop cause really it just a guessing game.

 

X2, plugged fuel filters, first possible culprit. and it may have have a cracked CAC, losing boost. New air filters if needed. Neglected air filters will shorten the CAC’s life.

 

The fact that it has good power, then suddenly low power, along with no smoke pretty well rules out air supply or exhaust issues.

You can't rule out a boost pressure sensor, but it would be easier if you could see what the ECM is seeing.

From your description I would lean towards an electrical issue.

I'd probably start (edit: I'd actually start by replacing the fuel filters, then proceed to this step) by putting a pressure gauge on a tee on the fuel line from pump to head. Verify roughly 70-80 psi and make sure it doesn't go over that. A return line blockage will cause higher pressure and low power.

All good there and I'd run a fuel line (you can use plastic air line, cheap and easy) from the pump Inlet and drop directly into the fuel tank. Secure that line and test drive.

If the problem reoccurrs, you have ruled out a fuel issue.

 

Hi did u find out what’s the problem ??? I have same with my series 60 glider

 

Hi did u find out what’s wrong ??? I have same problem with mine glider series 60