Duramax Diesels Forum Truck of the Week
  #31  
Old 06-30-2018, 11:08 AM
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unplug the MAF and see what it does, don’t think that’s your issue, most likely the FPR or lift pump, play with the pressure on it.
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  #32  
Old 07-10-2018, 10:32 AM
500hpduramally 500hpduramally is offline
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Factory filter housing is deleted. Fass pressure at 8psi.
So the truck runs smooth and no haze or smoke with MAF reading below 38-40.
But with the MAF reading 38-40 it reads low at WOT 350-375. Any ideas why it would reads low at wot? New air filter dry air filter (not oiled) new MAF SENSOR, and all connections are tight
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  #33  
Old 07-11-2018, 06:26 AM
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MAF probly needs scale adjusted
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05' Black Chevy CC/SB LT- Blackout Performance built motor/trans/tuning- Gone

The Blessed Hellride- 08' White GMC Sierra SLT CC/SB,
100k miles. Piston eater.

Wife's ride- 2016 Pearl white Legacy limited 3.6R

Rig ride/new DD-02' Black Eddie Bauer explorer 4.6, -180k, still sporting original trans, outlasted two Duramaxs.
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  #34  
Old 07-30-2018, 04:40 PM
500hpduramally 500hpduramally is offline
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So MAF reading is figured out. Just wasnt calibrated right. Idles pretty smooth. Still fighting the haze/blue smoke. Thought it was kinda fixed but it got down to 55-60 degrees in the morning last week and the truck smoked blue bad and seemed to be missing slightly for 10-15 mins. Did another compression test and here are the results
1-340 2-340
3-350 4-350
5-340 6-320
7-320 8-340
Think these are low enough to cause smoke?
Balance rates seem okay plus or minus 1-1.5.
Have no blow by
These were the results back in April

1-360 2-360
3-360 4-380
5-380 6-360
7-360
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2005 CC/SB LLY 4X4
EFI Live by Duramax tuner
Build trans
Fass 150
MBRP exhaust
Diamond eye downpipe
Exergy sportman cp3 lbz regulater
45 over S&S injectors
Danville 3794 stg2
Wcfab y bridge intercooler pipes intake and turbo mouthpiece
Long Horn fab traction bars
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  #35  
Old 07-30-2018, 09:37 PM
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320 is getting a tad low, but shouldn’t cause that much smoke, have you played with the rail pressure at idle to see if it cleans up?
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05' Black Chevy CC/SB LT- Blackout Performance built motor/trans/tuning- Gone

The Blessed Hellride- 08' White GMC Sierra SLT CC/SB,
100k miles. Piston eater.

Wife's ride- 2016 Pearl white Legacy limited 3.6R

Rig ride/new DD-02' Black Eddie Bauer explorer 4.6, -180k, still sporting original trans, outlasted two Duramaxs.
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  #36  
Old 07-30-2018, 10:25 PM
500hpduramally 500hpduramally is offline
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Was originally at 4400psi and got bumped to 6500. It did seem to help alittle but still hazes at 6500
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2005 CC/SB LLY 4X4
EFI Live by Duramax tuner
Build trans
Fass 150
MBRP exhaust
Diamond eye downpipe
Exergy sportman cp3 lbz regulater
45 over S&S injectors
Danville 3794 stg2
Wcfab y bridge intercooler pipes intake and turbo mouthpiece
Long Horn fab traction bars
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  #37  
Old 07-30-2018, 11:03 PM
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Idle timing? Pilot timing?
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  #38  
Old 07-31-2018, 05:40 AM
500hpduramally 500hpduramally is offline
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pilot at cold start is 13-14 degrees. And do you mean main injection timing? If so it’s 4 degrees at cold start
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2005 CC/SB LLY 4X4
EFI Live by Duramax tuner
Build trans
Fass 150
MBRP exhaust
Diamond eye downpipe
Exergy sportman cp3 lbz regulater
45 over S&S injectors
Danville 3794 stg2
Wcfab y bridge intercooler pipes intake and turbo mouthpiece
Long Horn fab traction bars
Reply With Quote
  #39  
Old 07-31-2018, 08:45 PM
500hpduramally 500hpduramally is offline
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Pilot inject at hot idle is 8 and main is 2
So you 320-350 compression shouldn’t make it smoke and haze at “cold” start up?
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2005 CC/SB LLY 4X4
EFI Live by Duramax tuner
Build trans
Fass 150
MBRP exhaust
Diamond eye downpipe
Exergy sportman cp3 lbz regulater
45 over S&S injectors
Danville 3794 stg2
Wcfab y bridge intercooler pipes intake and turbo mouthpiece
Long Horn fab traction bars
Reply With Quote
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