Fuel Flutter?? - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 11-05-2010, 10:02 PM Thread Starter
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Fuel Flutter??

I have an autometer mechanical fuel pressure gauge mounted under the hood of my truck. when i first installed it it worked great for the first month or so. then all of a sudden it started fluttering nonstop like when your boost gauge flutters at high boost if not hooked up properly. my gauge does this nonstop no matter what you do UNLESS you unhook the fuel line from it and hook it back up. then it will read fine untill it bleads the air out of the system. i also have a #5 injector going out (still within specs) but i get a really bad cold start and when on a factory tune only when i rev it i can feel and hear it miss and it will blow a cloud of white smoke. when im on one of my regular tunes from innovative it will not do anything but have a rough cold start. truck still has plenty of power and still makes boost fine. also. if you stab it from a stop it lags really bad and when your on a tune (extreme street mostly) and you stab it from a stop it wont really go anywhere it will just dump a BUNCH of black smoke till the turbo spools up. is this normal?? if not what is my problem?? thanks guys

2003 F350 XLT with a 6.0 PSD
Viper 5701
SCT with Innovative Tunes
(Tow, Tow/Brake, Aggressive Street, Extreme Street, Extreme Race)
4" Turbo Back Straight Pipe
Sinister Diesel EGR Delete
Autometer Z-Series Pyro, Boost, and Trans Temp
S&B Intake
08+ Rear Conversion PTM
05+ conversion PTM with Hellas Frenched in Bumper
Factory Fender Flares
5k HIDs
Reflexxion Cowl Hood
Maxx Lift 2.5" Leveling kit
22" Hulks with 37" Toyo M/T's
2-12's and 1100 watts RMS
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post #2 of 4 Old 11-05-2010, 10:03 PM Thread Starter
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i should also mention i replaced the ICP sensor tonight and it did not change a thing. ficm is fine and reads 48 volts and was just replaced last november. crank, cam, and map sensors are all new also.

2003 F350 XLT with a 6.0 PSD
Viper 5701
SCT with Innovative Tunes
(Tow, Tow/Brake, Aggressive Street, Extreme Street, Extreme Race)
4" Turbo Back Straight Pipe
Sinister Diesel EGR Delete
Autometer Z-Series Pyro, Boost, and Trans Temp
S&B Intake
08+ Rear Conversion PTM
05+ conversion PTM with Hellas Frenched in Bumper
Factory Fender Flares
5k HIDs
Reflexxion Cowl Hood
Maxx Lift 2.5" Leveling kit
22" Hulks with 37" Toyo M/T's
2-12's and 1100 watts RMS
Wojo is offline  
post #3 of 4 Old 11-06-2010, 06:49 AM
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You've just answered your own question. If cylinder #5 injector is weak under any circumstance (ie cold engine start-ups, misfiring under load etc.), it needs to be replaced PERIOD. To diagnose properly, you would need to leave the truck overnight and have someone with a Ford IDS scan tool connected to it and the power balance graph up and running, ready to view it when the engine is started cold. Once the engine is started, the FICM compensation mode would need to be disabled to view the weak cylinder(s)/injector(s) and replaced as necessary. Once this is done, a fuel pressure check would top off the repair. By the way, replacing the fuel pressure regulator with the updated "blue spring" style would hurt either, while you're at it (part number 3C3Z-9T517-AG).

http://www.yorkdaleford.com/service.html

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....who works at a dealership that now employs SOME half decent looking female employees since they overhauled most of the administrative staff

....but STILL loves hot women with big boobies

....and STILL hates working on E-Series with 6.0L
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post #4 of 4 Old 11-06-2010, 07:14 AM Thread Starter
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All that has been done besides the fuel pressure check because I have the gauge. Is there any reason
My gauge could be fluttering like that. Could I use a cheap oil pressure gauge az a fuel pressure gauge to see if my gauge is broken or what the deal is? Also do u think that the bad injector I have would be the cause of my white smoke at cold startup or could that be a different issue?

2003 F350 XLT with a 6.0 PSD
Viper 5701
SCT with Innovative Tunes
(Tow, Tow/Brake, Aggressive Street, Extreme Street, Extreme Race)
4" Turbo Back Straight Pipe
Sinister Diesel EGR Delete
Autometer Z-Series Pyro, Boost, and Trans Temp
S&B Intake
08+ Rear Conversion PTM
05+ conversion PTM with Hellas Frenched in Bumper
Factory Fender Flares
5k HIDs
Reflexxion Cowl Hood
Maxx Lift 2.5" Leveling kit
22" Hulks with 37" Toyo M/T's
2-12's and 1100 watts RMS
Wojo is offline  
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