No smoke......... - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 10-04-2010, 02:58 PM Thread Starter
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No smoke.........

means it's a fuel issue correct? So far it seems thats what I've read online and heard from shadetree mechanics. If my truck has a low boost issue, but doesn't blow any color of smoke, it's not getting enough fuel??? I would assume that if it was just a boost leak it would blow some sort of smoke atleast on the initial take off correct?

08/1998 Early 1999 Ford F-250 Superduty, 8800lb GVW, 163,000 miles, Extended Cab, 4x4, Auto, 7.3, Leather, CD/Cassette/AM/FM, LT285/75R16 Maxxis MA-751's, 4" exhaust, otherwise stock............. For Now.........


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post #2 of 16 Old 10-04-2010, 03:03 PM
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no if its stock it shouldnt smoke at all... smoke is unburnt fuel so if you have no smoke your burning all your fuel efficiently



95 2x4 ex cab, 5 speed, Intake, Exhaust, Gauges, Stage one sticks, TW tuned, valair clutch, polk mm audio all the way around, back seat gone for the subs, projector hid headlights,viair onboard air hooked to train horns and 3.55 Diff... Up next, Fuel system, IDM, Turbo and HPOP

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post #3 of 16 Old 10-04-2010, 03:20 PM Thread Starter
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Originally Posted by gman590 View Post
no if its stock it shouldnt smoke at all... smoke is unburnt fuel so if you have no smoke your burning all your fuel efficiently
Right, given the truck was in 100% operating condition, but it has a low boost problem so I would think that when I first take off, especially under hard acceleration, it should blow a little black smoke due to the turbo not making the appropriate boost right?

08/1998 Early 1999 Ford F-250 Superduty, 8800lb GVW, 163,000 miles, Extended Cab, 4x4, Auto, 7.3, Leather, CD/Cassette/AM/FM, LT285/75R16 Maxxis MA-751's, 4" exhaust, otherwise stock............. For Now.........

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post #4 of 16 Old 10-04-2010, 03:29 PM
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Hmmm... I could see that being a possibility... I would start off with what I knew was wrong. The low boost issue would be my main concern and then start addressing any fuel or other issues... Just my .02



95 2x4 ex cab, 5 speed, Intake, Exhaust, Gauges, Stage one sticks, TW tuned, valair clutch, polk mm audio all the way around, back seat gone for the subs, projector hid headlights,viair onboard air hooked to train horns and 3.55 Diff... Up next, Fuel system, IDM, Turbo and HPOP

89 F350 cclb 2x4 5spd bone stock down to the original radio

64 C10 sclb all original
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post #5 of 16 Old 10-04-2010, 03:35 PM Thread Starter
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Originally Posted by gman590 View Post
The low boost issue would be my main concern and then start addressing any fuel or other issues... Just my .02
But here's my dilemma. People are telling me that if it was just a low boost issue, it would smoke due to x amount of fuel being delivered assuming x amount of boost will be there, but if there's no smoke, then the low boost issue could be caused by a fuel issue, not making enough heat and exhaust to spool the turbo properly, hence my original post.

08/1998 Early 1999 Ford F-250 Superduty, 8800lb GVW, 163,000 miles, Extended Cab, 4x4, Auto, 7.3, Leather, CD/Cassette/AM/FM, LT285/75R16 Maxxis MA-751's, 4" exhaust, otherwise stock............. For Now.........

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post #6 of 16 Old 10-05-2010, 07:29 PM
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i have the same issue with my truck. i have my bullydog turned up to the 125hp setting and still will not blow out smoke. my boost gauge hits a little over 30LBs and over boost light comes on but no black smoke. i havent figured it out yet either. i wish i could have black smoke, and i finally did a couple of weeks ago when my injectors went out! it will be rolling next week so hopefully the stage 1s will make it smoke!
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post #7 of 16 Old 10-07-2010, 06:46 PM
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your not gonna blow any smoke when stock, unless your truck is having issues.

and from what ive seen you usually wont blow large amounts of smoke unless your running bigger tunes.
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post #8 of 16 Old 10-08-2010, 04:56 PM Thread Starter
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Originally Posted by BullyDogJason View Post
your not gonna blow any smoke when stock, unless your truck is having issues.

and from what ive seen you usually wont blow large amounts of smoke unless your running bigger tunes.
My truck is having issues though. Thats why I'm asking. If it was a turbo issue, wouldn't it blow a little smoke when I first take off assuming the air will be there from the boost until it realizes that there is no boost??? Since there's no smoke at all, that would lead me to believe that it is fuel related and not turbo related. On a side note, I pulled my charge pipes off wednesday and cleaned all the soot off them and the couplings and clamps, checked the turbo for "dusting" and shaft play, and put it back together. The turbo spins free as a bird, no shaft plat at all, and looked fine. The clamps are all tight. So I'm starting to think that if it has a boost issue it must be on the exhaust side, such as the EBPV butterfly or something. It seriously feels like there's something in the way when it's floored and it doesn't make the boost it should. Here's a pic of the turbo on the intake side:


08/1998 Early 1999 Ford F-250 Superduty, 8800lb GVW, 163,000 miles, Extended Cab, 4x4, Auto, 7.3, Leather, CD/Cassette/AM/FM, LT285/75R16 Maxxis MA-751's, 4" exhaust, otherwise stock............. For Now.........

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post #9 of 16 Old 10-08-2010, 05:05 PM
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Quote:
Originally Posted by smkn22s View Post
i have the same issue with my truck. i have my bullydog turned up to the 125hp setting and still will not blow out smoke. my boost gauge hits a little over 30LBs and over boost light comes on but no black smoke. i havent figured it out yet either. i wish i could have black smoke, and i finally did a couple of weeks ago when my injectors went out! it will be rolling next week so hopefully the stage 1s will make it smoke!
stage 1 will make her roal some coal fer sure!!! get you some tw tunes...you will love it..

and if you have a low boost issue,start with the uppipes,replace old worn parts,inspect everything that has to do with boost,then check fuel psi.
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post #10 of 16 Old 10-08-2010, 05:14 PM
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I get what your saying , low boost due to motor not spooling the turbo . I would check your fuel pressure and see if it is low . Does the truck seem to run ok other than when mashing it , you know just cruising along , no boost needed . I don't know how our trucks control fueling based on boost . I have been wondering because people do the boost fouler without problems . I wish I could help more but am new to modding diesels .

07 F-250 Outlaw , Rough Country 6 inch lift , 37-13.5 R20 Nitto Mud Grapplers , MBRP 5" Exhaust , 08 Mirrors , S&B intake , 5% Tint sides and back , 35% windshield .

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