Cold start romp with black smoke? - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 12-16-2012, 09:27 PM Thread Starter
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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.

2000 F350 XLT SCLB 4x4
PHP 6 Pos. Chip
DIY 6637 Induction
Walker Muffler
Stewart Warner Gauges
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post #2 of 8 Old 12-16-2012, 10:21 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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post #3 of 8 Old 12-18-2012, 06:27 PM Thread Starter
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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.

2000 F350 XLT SCLB 4x4
PHP 6 Pos. Chip
DIY 6637 Induction
Walker Muffler
Stewart Warner Gauges
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post #4 of 8 Old 02-08-2013, 08:08 AM Thread Starter
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How does lighter synthetic oil help this issue? Is it masking and problem with the injectors?

2000 F350 XLT SCLB 4x4
PHP 6 Pos. Chip
DIY 6637 Induction
Walker Muffler
Stewart Warner Gauges
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post #5 of 8 Old 02-08-2013, 08:09 AM Thread Starter
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I have tested my GPR and GPs and all show good. Would injector o-rings help this issue?

2000 F350 XLT SCLB 4x4
PHP 6 Pos. Chip
DIY 6637 Induction
Walker Muffler
Stewart Warner Gauges
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post #6 of 8 Old 02-08-2013, 11:16 AM
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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.


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post #7 of 8 Old 02-08-2013, 01:57 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.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
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post #8 of 8 Old 02-09-2013, 06:59 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.

2001 f250 4dr, 4wd, auto
garrett 38r, afe, 4", snow performance meth injection, bully dog triple gauge, 17" moto-metals w/ 305's, alpine touch screen dvd/nav...and who knows what else...
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