Cold start romp with black smoke? - Ford Powerstroke Diesel Forum
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Old 12-16-2012, 10:27 PM
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Cold start romp with black smoke?

So my truck has started romping like its only firing on 5 or 6 cylinders during cold starts. While romping, black puffs of smoke can be seen coming out of the tailpipe. Is this GPs or injectors causing this? When I flip the truck to the high idle setting on my chip the romp goes away. Thanks for any input guys.
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Old 12-16-2012, 11:21 PM
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my 7.3 romped on cold starts and i switched my oil to 5w30 synthetic and the romps went away.
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Old 12-18-2012, 07:27 PM
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Done lots of searching, found a bunch of cold starting issues with white smoke but nothing with black. Does anyone have an idea what could be causing my romp? Really don't want to swap to synthetic if I don't have to. The oil in the truck right now is 15w40 Rotella with about 200 miles on it. Thanks.
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Old 02-08-2013, 09:08 AM
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How does lighter synthetic oil help this issue? Is it masking and problem with the injectors?
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Old 02-08-2013, 09:09 AM
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I have tested my GPR and GPs and all show good. Would injector o-rings help this issue?
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Old 02-08-2013, 12:16 PM
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Cold start romp with black smoke?

Quote:
Originally Posted by blue72 View Post
How does lighter synthetic oil help this issue? Is it masking and problem with the injectors?
A lighter weight synthetic will smooth it out when cold due to it flowing through the injectors nicer.


Sent from AutoGuide.com App
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Old 02-08-2013, 02:57 PM
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Re: Cold start romp with black smoke?

Quote:
Originally Posted by blue72 View Post
How does lighter synthetic oil help this issue? Is it masking and problem with the injectors?
Because it's an HEUI motor

I made my Samsung SGH-I997 send this.
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Old 02-09-2013, 07:59 AM
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Mine got the romps too. Changed that CPS and it stopped doing it...even when its cold. I might get 1 or 2 romps when its cold. Always get a puff of smoke. Was gonna change to T6, just hasn't been that cold in Wyo this winter.
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