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-   -   6.5TD black smoke and slow acceleration... help... (https://www.dieselbombers.com/chevy-gmc-6-2l-6-5l/92270-6-5td-black-smoke-slow-acceleration-help.html)

great white 03-03-2012 06:20 PM


Originally Posted by guimond47 (Post 866603)
K found that my sensor on my upper intake wasent plugedd in now it give presuure at the waiste gate soo solenoid is good. Still smoking tho with presuure and all .. Im honestly clue less from here now ....

I'm back to post #17 then....:s:

guimond47 03-03-2012 06:21 PM

Tell me about it .. Im gonna rip apart the upper intake and check wires

great white 03-03-2012 06:35 PM


Originally Posted by guimond47 (Post 866605)
Tell me about it .. Im gonna rip apart the upper intake and check wires

Make sure your egr is hooked up correctly or the engine will unseat the egr under boost and dump boost causing black smoke.

Also make sure your gaskets are in good shape (IE: not torn or missing pieces) or you can have a boost leak.

Also make sure you have the gasket installed between the upper and lower manifold for the egr or it will dump boost down the egr port.

Open this:

http://www.google.ca/url?sa=t&rct=j&...pwN9_w&cad=rja

Look on page 6a-279 and you can see it in the first picture.

Another:

http://myweb.cableone.net/tbogemirep...20EGR%20intake

The silver bit in the middle is the ring...

guimond47 03-03-2012 08:25 PM

Well i did so and no luck ... Here a quick video what it does with the new vacuum pump on ..

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ouu... might need to take it appart again then the middle o ring that goes to egr outlet i dont recall seeing that what so ever.... maybe i need a new one?

great white 03-03-2012 08:50 PM


Originally Posted by guimond47 (Post 866641)
Well i did so and no luck ... Here a quick video what it does with the new vacuum pump on .. Black smoke after vacuum pump change - YouTube

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ouu... might need to take it appart again then the middle o ring that goes to egr outlet i dont recall seeing that what so ever.... maybe i need a new one?

Could be. Black smoke on stock fueling indicates an lack of boost. If your wastegate is operating properly then your boost is going somewhere.

If the egr gasket is crushed or missing, you can see where part of your boost is going.....right into the exhaust ports.

Seeing how that is something else you had disturbed to do the valve cover gaskets, it seems a likely suspect....


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guimond47 03-04-2012 12:50 PM

can be.. ill check it out tomarrow morning ,ill keep u posted for sure(Y) this truck gave me to much stress. lol i try to make it good buy fixing its leaky valve covers but the it stabs me in the back hahah. but yea ill rip it apart one more time. is there anything else i should know while im in there.?:P thanks again great white. im happy your actually tryng to help me figuer it out :) props to you man :):c:

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video part one :


video part two :


Video part 3 !:) :



:jump::rocking::c:

thanks alot me for helpimng me out dignost the problem:) i was ready to scrap it:P

great white 03-04-2012 01:59 PM

No prob.

Glad you fixed it.

:c:


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