Archived 2000 cummins 2500 w/edge juice with attitude

[Ohiocummins]

Ok I have 2000 cummins 2500 4x4 with edge juice with attitude programmer and a FASS titanium series pump my And new injection pump well all 3 are about a year old the problem im having is when wide open throttle truck looses boost and blows a lot of smoke it will do it on level 0 or 6 always does it I have replaced all my filters the map sensor and did pressure check for head gasket no codes in the edge or on my regular scanner no codes im at a dead end on what the problem is any help is appreciated it's my only transportation at this moment and drivable but I don't like getting beat for the one lane by a Kia I have to fix it or figure it out thanks again for any help

 

[JRMora]

I’m not a expert on second gen trucks (I had a 12V many years ago). Loss of boost pressure could be a wastegate issue. Not the same issue but I had to pull out my wastegate a couple of years ago because I couldn’t develop boost under acceleration. The actuator shaft was sticking and binding holding the wastegate open. Cleaned it, cycled it and a little lube and I was back in business.

Worth a look.

 

[cerberusiam]

Do you have an adjustable boost elbow on it?

 

[Ohiocummins]

I will check as soon as I get home thanks for the input

 

[Ohiocummins]

No i dont have one on there

 

[Ohiocummins]

Also the smoke is black dont notice any other color

 

[Nigel]

I assume you have checked the inter cooler boots.

 

[cerberusiam]

Does it still loose boost when you don't use WOT? How much boost are you seeing before it drops and causes smoke?

 

[Ohiocummins]

Yes I did I actually put new ones and did all the updates for edge programmer

 

[NIsaacs]

No i dont have one on there

Is this issue you are having, a new issue or an ongoing one since the juice install? What are the boost numbers?

Nick

 

[Ohiocummins]

This just started overnight my high limit boost is set at 40 it will go to about 25 at wot then drop to 0

 

[NIsaacs]

Your boost elbow should be fine then. Even if your waste gate was wide open you would still have some boost. Make sure your intake system is fine from the turbo to the filter, including the filter. It almost acts like you have something loose, with a flapper that sucks shut or the intake tube is collapsing. Do you have an exhaust brake?

Nick

 

[cerberusiam]

As a guess, either spring broke or diaphragm in the WG actuator has ruptured. If it will run fine under 25 psi boost with no smoke or problems then it is highly likely the actuator is FUBAR. Even a plugged intake will not drop boost like that.