Weird engine start 6.0
Hotshot
Joined: Apr 2010
Posts: 19,060
Likes: 238
From: Saratoga Springs,UT
SO you did all that work and Still running Bad as Ever or ???
is that Fuel Knocking sound still there??
Where do you Stand at this Point??
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Junior User
Joined: May 2013
Posts: 68
Likes: 0
From: Alamogordo, NM
Well sometimes it starts really good (normal) and sometimes it sounds like it has about 200 rpm's for the first 2 seconds. And sometimes it cranks a little too long. I try to make a video, from a "bad" start. But thats not the real problem.
The real problem is, that it has misfires when the engine is cold. Seems like one cylinder (injector) is not firing properly. Everything points to one (ore more) injector. But I'd like to be sure. Im sure its not that cheap. The injectors alone are $1600. Plus labor.
The real problem is, that it has misfires when the engine is cold. Seems like one cylinder (injector) is not firing properly. Everything points to one (ore more) injector. But I'd like to be sure. Im sure its not that cheap. The injectors alone are $1600. Plus labor.
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Junior User
Joined: May 2013
Posts: 68
Likes: 0
From: Alamogordo, NM
Hey guys! Long time no see...
I finally added Rev X to the engine oil. What can I say, it's like a new truck!!!
I started it this morning, and I felt the difference immediately. It's so much quiter and smoother in idle. And now theres no bucking or anything else, it's really like a complete different truck. That stuff is just amazing!
So the big question is, will it stay like that?
I finally added Rev X to the engine oil. What can I say, it's like a new truck!!!
I started it this morning, and I felt the difference immediately. It's so much quiter and smoother in idle. And now theres no bucking or anything else, it's really like a complete different truck. That stuff is just amazing!
So the big question is, will it stay like that?
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
Mine didn't. By the end of the next oil change (without the RevX) it was back to the rough cold idle. It was amazing how much it helped but I thought the price was too high. There is a write-up in the tech folder on how to polish the injector spool valves I intended to try for a more permanent fix but my job has been too busy. Cold temps caught me again this year and I tried some Archoil 9100 with similar results on cold start and quieter running when warm. I do think if an oil additive makes that big of a difference you have confirmed stiction is the problem.
Logistics Pro
Joined: Dec 2004
Posts: 4,138
Likes: 7
From: South Weber, Utah
Mine didn't. By the end of the next oil change (without the RevX) it was back to the rough cold idle. It was amazing how much it helped but I thought the price was too high. There is a write-up in the tech folder on how to polish the injector spool valves I intended to try for a more permanent fix but my job has been too busy. Cold temps caught me again this year and I tried some Archoil 9100 with similar results on cold start and quieter running when warm. I do think if an oil additive makes that big of a difference you have confirmed stiction is the problem.
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Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
I haven't seen any testimonials on polishing the spool valves (here at FTE anyway) but it makes sense to me. I was going to try it. Might still do it if I get a break over the holidays.
For me the RevX was a little better than the Archoil on the cold idle issue, but it didn't quiet the engine down like the 9100 did. I've only put 400-500mi on my truck so I can't say how the Archoil will last. I should also mention I'm using their fuel addative.
I've never had much luck with "mechanic in a can" but it can make a big difference in these trucks depending on what the issue is.
For me the RevX was a little better than the Archoil on the cold idle issue, but it didn't quiet the engine down like the 9100 did. I've only put 400-500mi on my truck so I can't say how the Archoil will last. I should also mention I'm using their fuel addative.
I've never had much luck with "mechanic in a can" but it can make a big difference in these trucks depending on what the issue is.
Logistics Pro
Joined: Dec 2004
Posts: 4,138
Likes: 7
From: South Weber, Utah
My concern is not if it relieved the stiction problem as much as I would worry about the nut and bolt that the spool valve rides on coming loose and having them damage the LPOP or the like.
Fleet Mechanic
Joined: Aug 2012
Posts: 1,760
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