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1994.5 - 1997 7.3L Power Stroke Diesel  

Obs 7.3 rolling coal

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Old Aug 10, 2024 | 06:50 PM
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Obs 7.3 rolling coal

So when I give the skinny throttle the stab I start rolling coal. I thought it was normal due to more fuel than air while turbo catches up. I'm also being told it should never roll coal. I don't know anymore, should it? Shouldn't it?
 
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Old Aug 10, 2024 | 07:58 PM
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Is this stock?

A stock truck in good shape shouldn't roll coal much, maybe a puff on initial throttle.

With upgraded objectors and a tune, sure. My truck will roll like a frieght train at full tilt if I step on it.
 
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Old Aug 11, 2024 | 06:21 AM
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Originally Posted by Edgethis
Is this stock?

A stock truck in good shape shouldn't roll coal much, maybe a puff on initial throttle.

With upgraded objectors and a tune, sure. My truck will roll like a frieght train at full tilt if I step on it.
nothing crazy just a cs2 tuner, ebpv pedestal delete, 3 in down pipe, mellings lpop nothing other than the tuner that should change anything I believe when I had it in stock tune it still puffed but not a stream.
 
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Old Aug 11, 2024 | 06:22 AM
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agreed. it sounds like it has larger injectors and a tune.
if you are easy on the throttle off a stop, does it still smoke, or is it clean?
 
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Old Aug 13, 2024 | 04:15 PM
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Mine is close to stock and doesn't smoke at all except for some white smoke on a cold start when it is cold outside.
 
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Old Aug 13, 2024 | 04:25 PM
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Originally Posted by tjc transport
agreed. it sounds like it has larger injectors and a tune.
if you are easy on the throttle off a stop, does it still smoke, or is it clean?
it doesn't smoke unless I'm merging on the highway, passing someone or putting my foot in it
 
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Old Aug 13, 2024 | 05:27 PM
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Originally Posted by Stevenm95
it doesn't smoke unless I'm merging on the highway, passing someone or putting my foot in it
Mine either, but it's far from stock. Thats what were saying. Yours has a tuner you mentioned. Is it still a mechanical fuel pump or has it been converted to electric?
 
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Old Aug 13, 2024 | 05:54 PM
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What kind of tuner is it?
 
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Old Aug 14, 2024 | 04:11 AM
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thinking along the same lines as Ben. what tuner, do you know?
it sounds like it has an OLD "hot tune" in it from when smoke was not a bas thing.
 
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Old Aug 14, 2024 | 09:02 AM
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Originally Posted by Stevenm95
nothing crazy just a cs2 tuner, ebpv pedestal delete, 3 in down pipe, mellings lpop nothing other than the tuner that should change anything I believe when I had it in stock tune it still puffed but not a stream.
Edge CS2 tuner
 
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Old Aug 14, 2024 | 09:20 AM
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Originally Posted by tjc transport
thinking along the same lines as Ben. what tuner, do you know?
it sounds like it has an OLD "hot tune" in it from when smoke was not a bas thing.
CS2 Edge Evolution
 
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Old Aug 14, 2024 | 09:23 AM
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Originally Posted by Edgethis
Mine either, but it's far from stock. Thats what were saying. Yours has a tuner you mentioned. Is it still a mechanical fuel pump or has it been converted to electric?
CS2 Edge and mechanical pump still.
 
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Old Aug 14, 2024 | 01:16 PM
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Ok canned tunes. That is why. And be VERY VERY careful when or if you return to sock, edge tuners like to turn ford PCM's into useless bricks
 
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Old Aug 14, 2024 | 01:18 PM
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Originally Posted by tjc transport
Ok canned tunes. That is why. And be VERY VERY careful when or if you return to sock, edge tuners like to turn ford PCM's into useless bricks
well that is fantastic news. So just in case have it rebuilt or buy from a aftermarket site?
 
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Old Aug 15, 2024 | 07:06 PM
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Just be very careful when you unhook it. I'd hope for the best before ordering a whole new ecm. Lot of change that might be unnecessary.

It'll be pretty evident if it's bad or bricked.
 
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