Smokey startups
Cargo Master
Joined: Jul 2015
Posts: 3,076
Likes: 21
From: Aransas Pass, Tx
I just noticed the white smoke this week too! I cranked it up for the first time after e fuel, up pipes, down pipe, ebpv delete and it fogs the yard out... Hadn't smoked until I did the work... I thought I had messed something up!
Would backing the fuel pressure down help the problem?
Would backing the fuel pressure down help the problem?
Cargo Master
Joined: Nov 2010
Posts: 2,797
Likes: 10
I just noticed the white smoke this week too! I cranked it up for the first time after e fuel, up pipes, down pipe, ebpv delete and it fogs the yard out... Hadn't smoked until I did the work... I thought I had messed something up!
Would backing the fuel pressure down help the problem?
Would backing the fuel pressure down help the problem?
I really do think it comes with part of the injector mods/ EBPV and tuning. I am not sure what is built into the computer/timing/programming with or without a chip, but the bigger injectors and adjusted timing for cold weather starts (based upon EOT, ECT, IPR, ICP, cold oil) seems to be the cause IMO. Chip in or chip out it smokes the same. IME Manual ECUs smoke worse than auto ECUs with identical setups... Yes call me crazy but that is what I have also seen on numerous 7.3s. I have no idea why but sure as heck like to know. The SDs with a deleted EPBV and turbo upgrade smoke too, but not near as bad as the OBS truck...not sure if different programming/split shots, or the AIH aids this.
I will say every big nozzled cummins that comes i here does the same darn thing when its cold. Especially if its an older 24 or 12 valve. The 12 valves more than the 24s. My father in laws juiced up 12 valve smokes just like my truck in the morning..... His bone stock 12v barely white hazes, but it hazes.
Postmaster
Joined: Sep 2007
Posts: 4,195
Likes: 6
From: Medford Oregon
My stock sticks have always smoked a bit on startup @ 40 F or below. Before and after e-fuel. It always starts up good with no missing so GP's are working. Back out of the driveway then go forward, probably 60 feet down the road and all smoke / haze gone.
MadVan always said Ford over-fuels the OBS trucks at idle.
MadVan always said Ford over-fuels the OBS trucks at idle.
Thread Starter
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Posting Guru
Joined: Jun 2011
Posts: 1,083
Likes: 0
From: Walla Walla, WA
My stock sticks have always smoked a bit on startup @ 40 F or below. Before and after e-fuel. It always starts up good with no missing so GP's are working. Back out of the driveway then go forward, probably 60 feet down the road and all smoke / haze gone.
MadVan always said Ford over-fuels the OBS trucks at idle.
MadVan always said Ford over-fuels the OBS trucks at idle.
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Cargo Master
Joined: Nov 2009
Posts: 2,560
Likes: 20
I have had smokey start ups a long time. A few times it has started and idled a bit higher and seems to smoke less. I have done glow plugs relays harness work etc. without success. I would love to have less smokey starts. I need to check compression. Not sure if a low pressure cylinder could be the cause.
Cargo Master
Joined: Nov 2010
Posts: 2,797
Likes: 10
Mine maybe let out an initial puff but that was it after I did the GP and what not. Didn't matter how cold it was. For some reason I'm leaning towards the tuning. Goin from a Cali stock truck to a 49 stater with stage 1's. What it is, I have no fricking clue. It has been low 50's maybe down to 40. But plugin in fixed it. That is all I know.
Cargo Master
Joined: Nov 2010
Posts: 2,797
Likes: 10
Like I said. The truck will start just fine when its been near -40 out and not plugged in. Its not a low compression issue either as the truck pushed closed to 365 on all 8 cylinders at 6200 feet. I simply think its it due to a lack of an EBPV and too much fuel at cold cold idle.
Hotshot
Joined: Aug 2006
Posts: 10,764
Likes: 39
Well I have always wondered what default fueling mode the computer goes into when the oil is below a certain temp. With bigger injectors I wonder if this fueling parameter is changed at all.
Like I said. The truck will start just fine when its been near -40 out and not plugged in. Its not a low compression issue either as the truck pushed closed to 365 on all 8 cylinders at 6200 feet. I simply think its it due to a lack of an EBPV and too much fuel at cold cold idle.
Like I said. The truck will start just fine when its been near -40 out and not plugged in. Its not a low compression issue either as the truck pushed closed to 365 on all 8 cylinders at 6200 feet. I simply think its it due to a lack of an EBPV and too much fuel at cold cold idle.
Thread Starter
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Posting Guru
Joined: Jun 2011
Posts: 1,083
Likes: 0
From: Walla Walla, WA
Sorry for the long delay, just been busy lately. Well I reloaded the tunes on my chip and still the same nasty startup. I will get a video of it. It's pretty bad. Lol. I'm goin to contact Jody this week and see what he thinks.