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  #1  
Old 05-20-2017, 04:23 PM
Highroller54 Highroller54 is offline
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Default 6.4 g-h tune down on boost and up on smoke.

Haven't been on the hiway in a while but at full throttle all I am seeing is 30 psi and way more smoke then I am used to. Feels down on power to. I don't hear a boost leak but need to investigate and air filter is clean. Low mile truck runs good, any idea what I should check in the hotel parking lot? Lol
Thanks!! Chad.
  #2  
Old 05-20-2017, 07:04 PM
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Jonnydime Jonnydime is offline
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If it's a 6.4 and only building 30psi somthing is wrong. Check for boost/exhaust leaks.
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Old 05-20-2017, 07:08 PM
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What's rail pressure
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Old 05-20-2017, 08:26 PM
Highroller54 Highroller54 is offline
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Quick look, no black like exhaust drive pressure leaks, no ripped charge pipes. I don't think my black maxx can check rail pressure (could be very wrong and didn't have time to poke around it yet) brake boosting it sure sounds normal like no leaks. No codes.
Might have to get it home before I can really dig into it. Its strange.
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Old 05-21-2017, 11:01 PM
Highroller54 Highroller54 is offline
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Quote:
Originally Posted by sootie View Post
What's rail pressure
What should I be looking for? I'll put it on the scanner this week and go do some pulls.


I'm home now, some pulls it would make 30 psi of boost and lots of smoke, down on power but still moves out ok, maybe like a stock truck would, next pull would be 44 pounds, clean and full power.
I am all ears on ideas. It still has a egr valve and coolers but turned off with the B-maxx and g-h tunes.
  #6  
Old 05-21-2017, 11:40 PM
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Check what your ebp is doing when it acts up as.well.
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  #7  
Old 05-21-2017, 11:46 PM
Highroller54 Highroller54 is offline
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Originally Posted by 6.0 Tech View Post
Check what your ebp is doing when it acts up as.well.
Will do!

Thanks for everyone's help so far, I need to get it fixed before trailer towing season and that is soon lol.
  #8  
Old 05-27-2017, 03:51 PM
Highroller54 Highroller54 is offline
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Ok koeo
Baro 3.97v
High pressure fuel 0.0
Map 14 psi
Exhaust Back pressure 14 psi

Screwing up, full throttle
30 psi boost on dash
78psi ebp
24,500psi (rounded off) fuel pressure and matches desired perfectly
Map 42 psi (uncorrected)
Egr position 0

I don't have a pid for maf for some reason, pulled and checked, it's very clean.

I am lost. To me it looks mint but obviously is not but I'm not a 6.4 expert. I can pull over then pull out and get on it 44 pounds and perfect, get out of it slow down 20-30 mph, back on 30 psi and smoke.

Any help at all is very appreciated!!!
  #9  
Old 05-27-2017, 04:55 PM
Highroller54 Highroller54 is offline
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Hooked up my other scanner and the maf is reading but ran out of time and can't say anything other then it's changing when I rev the truck. I've got the flu and 1000 things to do but need to get my beloved 6.4 fixed lol.
  #10  
Old 05-27-2017, 07:17 PM
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bigrpowr bigrpowr is offline
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Quote:
Originally Posted by Highroller54 View Post
Hooked up my other scanner and the maf is reading but ran out of time and can't say anything other then it's changing when I rev the truck. I've got the flu and 1000 things to do but need to get my beloved 6.4 fixed lol.
check the down pipe for oil yet ?
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