slight leak at turbo?

[fastaschit18]

i have a 2000 psd under low speed slight throttle i hear a slight swoosh before i ever have enough throttle for boost im really low boost. the sound is kinda hard to explain it sound like a old ford car that the ac vac lines came off under the dash kinda a vac leak sound? thanks

 

[whatabudro]

Exhaust Back Pressure Valve? EBPV, does the sound go away once the engine is warmed up? What is your location, and temprature?

 

[fastaschit18]

seems like it does as engine warms up i hear it less im also getting a code for that valve, does it hurt performance?

 

[whatabudro]

It does when then valve is engaged (closed or partially closed) I gutted mine on my truck because it was leaking lots of oil. I haven't noticed major improvements, but my oil leak is gone now. Here are some pictures of what the valve and compenents look like.

http://superdutydiesel.com/wiki2/tiki-browse_gallery.php?galleryId=10

 

[fastaschit18]

looks like turbo removal to do this job the truck feel like its down a little on power im just not sure if this could be the problem or not

 

[roosterdiesel]

Did you clear the code and it come back?

If so you can unplug the EBPV at the base of the front of the turbo. If it quits making the sound, you'll have to find what's causing the malfunction if it's still closing when engine oil temp is over 150 degrees.

This Turbo Pic has the plug labeled for reference.

 

[fastaschit18]

the sound leave as the engine warms up is this something that needs attention?

 

[whatabudro]

You should hear it in normal operation, but if you are getting a code for the ebpv then you probably have a problem. What is the code you are getting?

 

[fastaschit18]

how hard is the turbo to remove? ive done some cummins but this on looks like it a bit harder to get to? also the valve is bad should i reolace it or gut it? i really dont know what its for

 

[roosterdiesel]

The valve won't be bad. It can become stuck I think when it's heavily sooted up.

The EBP sensor might be bad, a scanner would tell you that if you could read what the sensor is reading.

The valve is there to put a load on the engine when the engine is cold and outside temps are low. It helps with warm up and will close when you lift or just have light the throttle and open when push the throttle. You can watch the boost gauge come down when the valve closes. Some gut it, some wire it to a switch and make an exhaust brake out of it.

-popcorn