cat c-15

sounds like a boost leak. idle up to 1500rpm and squirt all conections with windex or soapy water and watch for bubbles. the cac you will probably have to pressurize to see if it will hold pressure.

 

The smallest air leak can give quite a drop in power. Also I'd be checking end float and radial play on the on the turbos, I had one let go because of too much play. On my new replacement turbo there was absolutely no end float or radial play at all.

 

let me guess, top turbo. keep an eye on those bolts. they have a tendency to do that on a regular basis.

 

I would figure with broken bolts, there would be a loud sound of exhaust leaking.

 

Ah the dreaded Acert turbo studs claim another victim. Wonder how much labor money Cat has made off that (their own poor engineering) over the last few years. Too much weight hanging on that little an area. Better stock up on rocker arms, too. Good luck going forward.