2011 duramax smoke - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 8 (permalink) Old 06-22-2015, 11:41 AM Thread Starter
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2011 duramax smoke

I have a 2011 duramax crew cab dually flatbed. Bought it at a salvage auction and fixed the body damage. DEF delete, Motor Opps programmer, straight exhaust. Hasnt had one issue for many miles. Heard a slight whosh sound , not quite the big pop sound so many folks talk about when intercooler pipe connections let go. Has reduced power,( not as much as a total pipe failure ) and blows lots of black smoke on hard acceleration.
It has a little sound of air rushing down by the passenger side bottom intercooler connection when getting on the throttle. It has the twist type clamps on that pipe and they feel loose but dont know how to get the off to look at or to tighten them. I would like to remove that pipe for a air leak inspection but cant figure the twist clamps.
Will a small leak cause great smoke?
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post #2 of 8 (permalink) Old 06-22-2015, 10:15 PM
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I think you are referring to the locking ring, this video shows how to unlock the ring and pull the pipe off at 1:44-2:40. sorry its the best I can find. https://www.youtube.com/watch?v=57O64OreZuk
yes a boot/pipe leak in the inter-cooler will cause excessive smoke.

Smoke!!! Smoke!!!! Are you Smoking yet?
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post #3 of 8 (permalink) Old 06-23-2015, 01:19 AM Thread Starter
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Thanks . It was a two inch long crack on the passenger side intercooler pipe. The great guy who had it before me had tried to fix it with some type of plastic sealer. Must be I don't hammer it much lol . Took a year to crack again. This was nice of you to help.
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post #4 of 8 (permalink) Old 06-23-2015, 01:23 AM Thread Starter
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Couldn't find a after market passenger side pipe so bought a new GM for $150. Found a huge mouse nest in the air filter that wasnt helping with the air flow. This truck never sits stil. Can't believe how fast they built their nest. Changed filter 2 weeks ago. It started to blow more and more smoke everyday until the pipe split and really helped out in the long run or I would have never found the nest until next fall.
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post #5 of 8 (permalink) Old 06-24-2015, 06:04 AM
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It doesn't take long at all, less then a day and they can have a nest built, depending on the bird. Glad you got the pipe replaced that the guy before you cheaped out on and didn't replace it properly.

Smoke!!! Smoke!!!! Are you Smoking yet?
2007.5 Sierra 2500HD SLE 6.6L Duramax Extended Cab Long Box Z71 Fass 150/95, Rare Parts G2 hd tie rods, EFi Live, DSP5 a tune from Duramaxtuner.com, MBRP 4" Downpipe back, Edge CTS Insight, Cognito Idler/Pitman Arm Braces, PPE Deep Transmission pan, deep pan filter, Transgo Jr kit
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post #6 of 8 (permalink) Old 06-24-2015, 04:44 PM Thread Starter
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While I had it in the hoist we changes the front bumper to the ranch pusher type I bought a while back and changed the oil , put a coat of paint on the rims and put new chrome GMC center caps on the wheels. I always amazes me how I put off stuff until its finally broke and apart. Then its like a tornado around here. I need to get new seats in it as it was a work truck before I bought it. Don't know what other years exchange with 2011 do you?'cree cab also.
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post #7 of 8 (permalink) Old 06-26-2015, 12:23 AM
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Any gm/chevy truck from 2011 to 2014 would be what you want to look at for seats.

Smoke!!! Smoke!!!! Are you Smoking yet?
2007.5 Sierra 2500HD SLE 6.6L Duramax Extended Cab Long Box Z71 Fass 150/95, Rare Parts G2 hd tie rods, EFi Live, DSP5 a tune from Duramaxtuner.com, MBRP 4" Downpipe back, Edge CTS Insight, Cognito Idler/Pitman Arm Braces, PPE Deep Transmission pan, deep pan filter, Transgo Jr kit
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post #8 of 8 (permalink) Old 06-26-2015, 01:10 AM
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SLT/Denali are the leather for GM side and LTZ is the leather for the Chevy side

Smoke!!! Smoke!!!! Are you Smoking yet?
2007.5 Sierra 2500HD SLE 6.6L Duramax Extended Cab Long Box Z71 Fass 150/95, Rare Parts G2 hd tie rods, EFi Live, DSP5 a tune from Duramaxtuner.com, MBRP 4" Downpipe back, Edge CTS Insight, Cognito Idler/Pitman Arm Braces, PPE Deep Transmission pan, deep pan filter, Transgo Jr kit
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https://thedieselgarage.com/forums/image.php?type=sigpic&userid=23125&dateline=124580  0528
For those whom are looking at a Duramax check this thread out.https://www.thedieselgarage.com/forum...ad.php?t=92868
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