2011 Ranger Tug turbocharger

[Melbond]

We had our turbocharger rebuilt and it has been replaced but it does not show on yanmar gauge to be getting in pressure. Only getting ~2k rpm’s. We’ve re-done clamps to ensure no air leakage. Any ideas or help?

 

[Levitation]

You need to put a manual test gauge on the manifold and see what the actual pressure is.
If you have NO boost, I would expect you to feel that immediately - no real power.
If you have low boost then the 2000 rpm under load seems likely.
But, do you know that it is an actual 2000 rpm? You need a hand held tachometer, put a white stripe on the crankshaft pulley and see what it is actually turning. (can do this at the dock in neutral and is the first thing I would do)
The electronics may be fighting you - you could have normal boost but the engine computer getting bad data from a failed sensor nd limiting the rpm.
1. Start with the manual rpm check
2. Do the manual pressure gauge
With those two numbers you will know which way to go.
Good luck.

 

[Levitation]

I hit enter by accident correcting typos. I spell just fine, my fingers - not so much.
Since the turbo was an initial problem then likely it is still a problem (just playing the odds here)