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Discussion Starter · #1 · (Edited)
I have been doing a lot of reading on here with the hard start / no start threads . But very few of them have any videos of the smoke coming from the truck pics or anything of that nature . So my truck has in the last 2 weeks started smoking upon start up and anytime its allowed to cool down . Back ground on the issue , I live in Jacksonville , Fl . The last time we had the cold snap ( in the 30's) a few weeks ago this started . I had just changed the CPS from one from NAPA to one of the more up to date ones said to be better by Motorcraft part # F4TZ12K073C . This issue was present with the old CPS and the new one currently in the truck . I changed the injectors 5 yrs ago around 100k miles to this point . The truck takes a long time to clear up . Once it does clear up / warm up it runs fine , No lose of power . Seems to have a slight miss in it at idle , from reading seem this CPS is known for . I have AE and I have run buzz test and CT test all seem to pass . I checked my GPR and it passed , tomorrow I will be checking it again . I also have a new GPR to install and new GPs . I am also going to replace my under valve cover harness and the VCG . I am going to start with side by side and go one by one hoping to narrow this down and give some people a place to start if this is what their truck seems to be doing . Also no additional oil usage and no coolant anywhere should not be . Anything else anyone wants to know ask and I will try my best to get info . I am curious as to what maybe causing this , I have had the truck for 10 yrs I do not want to get rid of it . It has sentimental value that far out weighs any price tag I can put on it . I want to figure this out and go another 10 yrs more . Any input welcome .

https://youtu.be/9cp6k6J8IiA
 

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Did you test your GPR or are you just going to replace it?

Do you ever plug it in? Does that get rid of the morning smoke?
 

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Discussion Starter · #3 · (Edited)
I did test the GPR and it tested ok , I did get another one in case just to have on hand . I do plug it in and it does start easier but does not get rid of the smoke you see in the video . I may change the GPR since I have it , I have not plugged it in tonight so I can retest the GPR with the truck completely cold . I has not been driven since Friday afternoon . It will be in the low 40's / high 30's . So it should call for the GPs and I can get a good test on the GPR . Also the smoke is not just in the morning its anytime the truck cools down and is started back up after sitting for a while . Example I can drive it to the fire station and it can sit for most of the day when I start it say 5 hrs it will smoke .
 

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You say you changed the injectors 5 years ago , what did you change them with , what breed , who did the job?
What reading is your fuel pressure at idle?
How many miles on the motor now?
Have you ever done any turbo work?

Yes you should check the G/P relay and your glow plugs.
 

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Discussion Starter · #5 ·
I myself changed the injectors out with stock remains from Riffraff , with woodnthings8 help I called him to make sure of anything I was unsure of . No issues until this last cold snap rolled threw . Started up with the normal light smoke with cold weather it has always done then all the sudden stated pouring out what you see on the video . Never had any turbo work , fuel pressure I will be checking that this morning when I get going on all this . Motor has 278k on it now .
 

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Discussion Starter · #6 ·
Well I changed all the glow plugs and the GPR . I had 6 bad GPs . Started It tried to go down the road it shut off but started back up . Then it started a loud knock that went away , I just brought it back to house and shut it off . Been a great truck but maybe time to move on . I don't have time to throw parts at it and have down time . I have a business I have to be at outside of the fire department . Down time is not a option for me anymore .
 

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Don't throw the towel in yet .
Have you any blow by from the oil filler neck or dip stick?
What was the fuel pressure?
The main causes for white smoke are - Glow plugs, relay with burnt contacts, injector issues, coolant leak.
 

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