Weird sound...exhaust leak?

[Strokin95]

I have been trying to figure out where the sound is coming from but haven't been able to yet. While I am driving I can hear a "chopping" sound like an exhaust leak, but when I took it to my exhaust guy he said there is no leaks. I can hear it a lot more if I get into the accelerator, just like "chop, chop, chop" sound but it's there just cruising as well just not as loud. Anyone else ever had this problem?

 

[kadeninabnitt]

Could be the ebpv

 

[lincolnlocker]

Does it sound like a vibration/rattle?

 

[Strokin95]

no, no vibration or rattle involved. just the chopping sound

 

[Pstroke96]

do you have an aftermarket exhaust? stock? when is it making the noise? its likley the ebpv

 

[Strokin95]

I have a 3" DP to a 4" exhaust, it makes the noise whenever I am driving and I am on the accelerator. It gets louder the more I lean into the pedal.

 

[91turbogsx]

Sounds like it would be turbo surge to me.

 

[neverkickn]

Have you done anything to the truck recently like a different chip or a new intake? Have you looked under the hood for soot around the turbo/firewall area?

 

[Strokin95]

I've had the problem since I bought the truck. It was there even when I first bought it.

 

[Pstroke96]

did you buy it with the exhaust on it?

 

[Strokin95]

Yes, the entire exhaust from the dp back has been checked already, no problems there.

 

[91turbogsx]

Sounds like it would be turbo surge to me.

I take this back after reading your original post again since you said it did it cruising as well.

Do you seem to have full power? Curious if you may have a bad injector or something.

 

[Strokin95]

See that's what I was leaning towards too, cuz since I have had it, just seems like the truck is losing its ummpf. I was kind of hoping it wouldn't be something like this, don't have the $$ for injectors any time soon. How would I diagnose this problem more?

 

[91turbogsx]

Get a good scanner on it and run a buzz test and contribution test. Do you have a check engine light at all?

 

[Strokin95]

No, no CEL and never have had one.

 

[91turbogsx]

Doesn't necessarily mean you don't have a bad injector with no CEL. Was just curious if it was possibly a bad connection with either an injector or UVCH'S. Those usually throw a code.

 

[Strokin95]

I'll take it to my local diesel shop see if they will run the tests tomorrow. Thanks.

 

[neverkickn]

Have you checked for pre turbo leaks. There is more to the exhaust system on a turbo vehicle than the down pipe back. I wonder if you don't have a drive pressure leak. If it was bad enough you could definately hear it and it would rob power for sure. Is there soot on the firewall or the collector area at the back of the turbo?

 

[Strokin95]

Nope, no soot anywhere,