Light grey smoke - Chevy and GMC Duramax Diesel Forum

04.5-05 LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 44 (permalink) Old 01-22-2011, 10:58 AM Thread Starter
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Light grey smoke

Hi Everyone, I'm getting lots of light grey smoke from my exhaust. What should I do to solve this problem? Any help will be appreciated. Thanks

2005 SILVERADO 3500 DUALLY 4X4.
BANKS POWER PACKAGE. MOUTHPIECE. EGR BLOCKED. PCV REROUTE. STAGE 3 TRANS BY INGLEWOOD TRANSMISSIONS. UPGRADED HG.
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post #2 of 44 (permalink) Old 01-22-2011, 09:25 PM Thread Starter
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Anybody?

2005 SILVERADO 3500 DUALLY 4X4.
BANKS POWER PACKAGE. MOUTHPIECE. EGR BLOCKED. PCV REROUTE. STAGE 3 TRANS BY INGLEWOOD TRANSMISSIONS. UPGRADED HG.
AVATAR: MY TOYS
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post #3 of 44 (permalink) Old 01-22-2011, 09:40 PM
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hmm ive heard that grey smoke means injectors are going out... but i wouldnt take my word on that!!

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Sadly Sold :2005 Lly Black 4wd cc/sb
6 inch Rancho lift kit with 35's
4 inch strait pipe, Egr delete, MA High Performance Duramax Motor Mounts :rockin AFE stage 2 cold air intake, Lbz mouthpeace, PPE Exhaust Manifolds & Up Pipes, 4.56 gears
EFI by IdahoRob With a little extra fuel

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post #4 of 44 (permalink) Old 01-22-2011, 11:48 PM Thread Starter
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Thanks bigblackdmaxx. I had a feeling it would be an injector issue. Does anyone know of someone in the Los Angeles area that can check my injector rates? The help would be appreciated. I also did the ice pick trick today and checked my harness it didn't help. I'm still smoking like a CHOO-CHOO!

2005 SILVERADO 3500 DUALLY 4X4.
BANKS POWER PACKAGE. MOUTHPIECE. EGR BLOCKED. PCV REROUTE. STAGE 3 TRANS BY INGLEWOOD TRANSMISSIONS. UPGRADED HG.
AVATAR: MY TOYS
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post #5 of 44 (permalink) Old 01-23-2011, 05:18 PM Thread Starter
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Anyone?

2005 SILVERADO 3500 DUALLY 4X4.
BANKS POWER PACKAGE. MOUTHPIECE. EGR BLOCKED. PCV REROUTE. STAGE 3 TRANS BY INGLEWOOD TRANSMISSIONS. UPGRADED HG.
AVATAR: MY TOYS
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post #6 of 44 (permalink) Old 01-23-2011, 05:48 PM
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sounds like injectors, too much fuel or not enough air would make it black as night, like collant entering the cylinder would make it grey

2004 Chevrolet 2500HD regular cab long bed LB7 Duramax
EFI Live Tuned By Day's Diesel
Glowshift Pyro & Boost Gauges
MBRP 4" Exhaust
Rhino Line bedliner
B&W Goose Neck Hitch
Windows Tinted 15%
Recon Tailgate Light Bar
Powdercoated Stock Rims
Goodyear Silent Armors 285/75R16
Next: Fass fuel system, Stage 4 trans kit,
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post #7 of 44 (permalink) Old 01-23-2011, 05:51 PM
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Is it doing it at Idle??



06 2500 CREW CAB 4X4 LBZ LOONNGGGGG BED
EXHAUST,EFI LIVE,S&B COLD AIR INTAKE
AUTOMETER GAUGES, TRANSGO JR, BLOCKED, TIE ROD SLEEVES...


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post #8 of 44 (permalink) Old 01-23-2011, 06:38 PM Thread Starter
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Not smoking at all when at idle, but when i put it in drive and push the accelerator 10% it starts smoking and doesn't stop unless i release the pedal.

2005 SILVERADO 3500 DUALLY 4X4.
BANKS POWER PACKAGE. MOUTHPIECE. EGR BLOCKED. PCV REROUTE. STAGE 3 TRANS BY INGLEWOOD TRANSMISSIONS. UPGRADED HG.
AVATAR: MY TOYS
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post #9 of 44 (permalink) Old 01-23-2011, 06:42 PM
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Disconnect the banks and see if it changes.



06 2500 CREW CAB 4X4 LBZ LOONNGGGGG BED
EXHAUST,EFI LIVE,S&B COLD AIR INTAKE
AUTOMETER GAUGES, TRANSGO JR, BLOCKED, TIE ROD SLEEVES...


This is not only your forum you have to share it with over 100,000 others
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post #10 of 44 (permalink) Old 01-23-2011, 06:43 PM
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take a video of it

Greg 05 LLY GMC Duramax Crew Cab SLT
Two inch lift 285 Nitto T.G. on Mojave's Full Egr delete Autometers AFE mouth piece AEM Brute Force
PPE Duramax Race Fuel Valve MBRP Turbo Back with downpipe 4" to 7 "single stack EFI Live with dsp5 tuning by Rob TCM tuning by Rob

Big Dipper stage IV Transgo shift kit Precision ML converter Raptor 150 lift pump DDP 75hp nozzles ARP headstuds



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