Severe smoke uppon startup - Ford Powerstroke Diesel Forum
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Old 10-28-2013, 05:32 AM
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Severe smoke uppon startup

I am brand new to any forum so bare with me please. I am posting a 7.3 issue that my brother in law is facing, and I am trying to help out. I will be as detailed as possible. I am not new to the auto mechanics world but I could be considered green in the diesel drivability field. So....on to the issue. The truck is a 1997 with 358k, completely stock, recent work done within the last couple of years is reman injectors, glow plugs, reman turbo. No power inhancers here. Regardless of the tempurature this thing smokes like a BEAST during the first startup of the day. I mean damn near choking out the neiborhood. Once the truck is warmed up you can still see a faint amount of white smoke. Smoke to me definatly smells of fuel. This may seem to be a obvious fix to some, I am sure becoming a member on this forum was the right move, a huge resource. Please help
I tried uploading a mp4 video of the truck during first startup of the day but I got a error message saying that a "security token is missing."? If anyone leaves their email address ill gladly email the video.
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Old 10-28-2013, 09:29 AM
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Have you tested the glow plugs, wiring to them, and/or glow plug relay?

Have you tried plugging in the block heater for 3-ish hours before a cold start?
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Old 10-28-2013, 12:48 PM
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I just found a couple helpful youtube videos explaining the glow plug resistance tests. One test of the actual glow plug and a different video explaining how to test resistance from the valve cover connector. I will test the glow plugs tonight. Something to add, his glow plug relay is currently wired up to a toggle switch from previous owner, so to start the truck he just flips the toggle on for 5-8 seconds then flips the toggle back off. He plans on fixing that issue once he has a couple debts paid off.
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Old 10-28-2013, 01:37 PM
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It doesn't cost any money to wire up the GP relay properly. Just re-connect the original wires to it, and don't try to outsmart the PCM's control of the relay (this isn't an old IDI with a touchy thermal GPR controller).
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Old 10-20-2014, 11:49 AM
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I have the same issue as this one, I have just replaced all glow plugs and valve cover gaskets that have the harness on it. Still not resolved, any more ideas?
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Old 10-22-2014, 10:06 AM
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You may have a lazy/leaky/broken injector. Do you have access or know someone with a good scanner? Use the scanner to run a balance test and a coil test.
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Old 10-28-2014, 06:04 PM
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Quote:
Originally Posted by BigFuel View Post
You may have a lazy/leaky/broken injector. Do you have access or know someone with a good scanner? Use the scanner to run a balance test and a coil test.
i have a 1994.5 powerstoke it has 280km it smokes heavy on start up and once warmed it doesnt seem to smoke as much, but if i'm in neutral and get the rpm above 1800 it starts throwing blue smoke again and alot of it! I haven't had a chance to scan it yet, so will still need to do that, does that still sound like an injector?
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Old 11-01-2014, 04:27 AM
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I'm going with BigFuel on this one guys... glow plugs, block heaters, etc have nothing to do with the truck smoking while running... they even have very little to do with intial smoke. They'll cut the white smoke first thing, and help em turn over a little easier in cold weather, beyond that, they serve 0 purpose. Need to check injectors... could be bad cups, could be carbon fouling, could be just plain ol lazy. In most cases its that last one... Not sure in this little stuff, but in the big 12+L stuff we'll get about 300-500k out of a set of injectors. Depends on altitude, and the kind of work were doin with em, some go out sooner, some go out later. But all smoking issues 99% of the time are cause by injectors or fuel system problems.
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Old 11-01-2014, 12:00 PM
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Quote:
Originally Posted by Rumblestrip View Post
I'm going with BigFuel on this one guys... glow plugs, block heaters, etc have nothing to do with the truck smoking while running... they even have very little to do with intial smoke. They'll cut the white smoke first thing, and help em turn over a little easier in cold weather, beyond that, they serve 0 purpose. Need to check injectors... could be bad cups, could be carbon fouling, could be just plain ol lazy. In most cases its that last one... Not sure in this little stuff, but in the big 12+L stuff we'll get about 300-500k out of a set of injectors. Depends on altitude, and the kind of work were doin with em, some go out sooner, some go out later. But all smoking issues 99% of the time are cause by injectors or fuel system problems.


Quote:
Originally Posted by JordanP View Post
i have a 1994.5 powerstoke it has 280km it smokes heavy on start up and once warmed it doesnt seem to smoke as much, but if i'm in neutral and get the rpm above 1800 it starts throwing blue smoke again and alot of it! I haven't had a chance to scan it yet, so will still need to do that, does that still sound like an injector?
Could be several things but injector o-rings usually get top billing. White smoke is generally coolant. Black is generally too much fuel but in a hot cylinder. Blue is fuel in a cold cylinder or oil from the turbo leaking into the exhaust track. If a contribution test comes home clean then I'd start looking at the turbo. In fact pulling the downpipe off the turbo outlet is so dead simple just do it and look for oil in the pipe and outlet flange.
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