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Old 04-15-2010, 07:55 PM   eBay Motors  #1 (permalink)
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EGR Valve

Hi will a bad or dirty EGR valve cause lots of black smoke out the exhaust? My check engine light came on and comes up as a egr code and just today it started to blow lots of black smoke. any feedback would be great thanks
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Old 04-15-2010, 10:14 PM   eBay Motors  #2 (permalink)
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Eh no it really shouldnt. You can get the EGR blocker and a finger stick though instead of trying to repair it.

What upgrades do you have? Exhaust? Intake? Both of them will cause your SES light to come on for a EGR code.
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Old 04-16-2010, 04:02 AM   eBay Motors  #3 (permalink)
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Eh no it really shouldnt. You can get the EGR blocker and a finger stick though instead of trying to repair it.

What upgrades do you have? Exhaust? Intake? Both of them will cause your SES light to come on for a EGR code.
hi i have MBRP dual 4" downpipe back exhaust and aem brute force intake why all of the black smoke? it started after i put the intake on. can i get more info on the finger stick and egr blocker thanks
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Old 04-16-2010, 04:38 AM   eBay Motors  #4 (permalink)
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Is that an oiled filter or dry type? If oiled, get some MAF sensor cleaner and clean the sensor. Use only MAF cleaner and nothing else.
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Old 04-16-2010, 07:01 AM   eBay Motors  #5 (permalink)
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Hi will a bad or dirty EGR valve cause lots of black smoke out the exhaust?
yes. an egr stuck open starves the motor of oxygen.
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Old 04-16-2010, 12:44 PM   eBay Motors  #6 (permalink)
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Where is the valve located on the motor?
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Old 04-16-2010, 08:44 PM   eBay Motors  #7 (permalink)
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Quote:
Originally Posted by 04gmcduramax View Post
hi i have MBRP dual 4" downpipe back exhaust and aem brute force intake why all of the black smoke? it started after i put the intake on. can i get more info on the finger stick and egr blocker thanks
Heres the only place that I know that sells it. Just type in "finger".

http://www.kennedydiesel.com/
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2006 Silverado 2500HD LBZ CC SB
Exterior: Escalade Handles, Front windows tinted to match the rear, painted bumpers & mirrors, billet grille, 305/50/20 Cooper Zeons on BMF Novakanes Death Metal, Cognito Braces, Stainless Sleeves, Train Horns
Interior: 4 Kicker 10in Subs in 2 custom box's, Autometer Ultra lite II Pyro and Boost gauges, Aeroforce Interceptor Gauge, HID Lows & Fogs, Painted accents
Performance: EFI Live Tuned by Blackout Performance, Custom Blackout Performance S475 over stock twins, 45 over stock injectors, MBRP Turbo Back Stainless Exhaust (Straight piped), Raptor Lift Pump, AFE Filter, GMAX6 kit with Suncoast 1057 converter installed by Blackout Performance
1999 Ford F-550 PowerStroke ''Wrecker'' **Jerrdan bed, S&B Intake
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Old 04-16-2010, 08:49 PM   eBay Motors  #8 (permalink)
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Don't get the fingerstick if you don't want to mess with the MAF sensor wiring. It requires cutting and splicing the MAF wiring which is basically a hack job.

The best way is using a tuner such as quadzilla, PPE, EFI live and get a EGR block off plate.

Sticking or faulty EGR do cause excessive black smoke.
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Old 04-16-2010, 08:50 PM   eBay Motors  #9 (permalink)
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Is that an oiled filter or dry type? If oiled, get some MAF sensor cleaner and clean the sensor. Use only MAF cleaner and nothing else.
Use CRC MAF sensor cleaner, it is found at any local auto part stores. Do not use electrical cleaner if the auto part guy tell you to get it, some electrical cleaner are hard on the MAF sensor.
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Old 04-17-2010, 07:51 AM   eBay Motors  #10 (permalink)
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Don't get the fingerstick if you don't want to mess with the MAF sensor wiring. It requires cutting and splicing the MAF wiring which is basically a hack job.

The best way is using a tuner such as quadzilla, PPE, EFI live and get a EGR block off plate.

Sticking or faulty EGR do cause excessive black smoke.
what is efi live?
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