Can you Clean Injector Spool Valves? - Diesel Forum - TheDieselStop.com
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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 11-16-2006, 09:14 PM   #1 (permalink)
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Can you Clean Injector Spool Valves?

So Ford has released the new flash for 6.0L CALIBRATION TO REDUCE COLD ENGINE DRIVABILITY CONCERNS Technical service bulletin (TSB) 06-22-03.
I understand this flash cycles the injector spool valves for 30 seconds when you shut of the motor. This is susposed to help with the sticking of the injectors on start-up.
I have 2004 6.0L Build date 8/03, that I just bought. It has 112,000 so back to the dealer will be costly.
When I cold start it in the morning it misses and has no power until it warms up a bit. If it's plugged in it does fine fires right up. After reading this forum it seems I may have some sticky/ gummed up injector spool valves.
So far here is what I have done:

Added 2 quarts of engine flush to motor oil, let idle for 10 min then dumped and refilled with new filter and rotella 15-40.
Changed both fuel filters (the one at the fuel pump was black?)
Dumped a quart of Diesel Kleen to 20 gallions of fuel and drove interstate for 250 miles @ 70 mph.

I think the previous owner did not change oil or filters per schedule that's why I am thinking sticky spool valves. When it's warmed up it runs great.
Has anyone tried to clean the injectors? and or had positive results from the new flash?
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Old 11-16-2006, 09:39 PM   #2 (permalink)
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Re: Can you Clean Injector Spool Valves?

I have not done the following but I've heard of guys draining all but a couple quarts of oil then adding Kerosene in the same amount as oil that drained out. Run engine on idle for about 5-10 minutes not gunning the engine. Drain that oil/kero mix, replace filters and refill with oil. The sticky injectors should fire better - at least for a while.

There are probably some old-timers that can comment on this procedure.
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Old 11-16-2006, 10:10 PM   #3 (permalink)
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Re: Can you Clean Injector Spool Valves?

I don,t think you fully understand the purpose of that TSB. Its not that your injector spool valves are dirty or gummed up. They are essentially broken in. Just as the engine itself gets broken in over time and mileage. Because they are "broken in", it allows for a closer tolerance between the spool valve and bore causing increased striction. The cycling of the spool valves on shutdown is to shake the oil out of the valve to decrease striction. ( Grampy_Jim has tried to explain it at least a dozen times). [img]/ubbthreads/images/graemlins/smile.gif[/img]

My 04 seems to be suffering from the same symtoms, although it doesn,t sound like its as bad as yours. I will eventually probably have to take it in and have the TSB performed. [img]/ubbthreads/images/graemlins/smile.gif[/img]
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Old 11-16-2006, 10:30 PM   #4 (permalink)
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Re: Can you Clean Injector Spool Valves?

Anyone that fully understands how the HEUI injector works would back away from your idea very quickly. The opportunity for premature wear or failure in the high pressure oil system it to great.

There are no "homegrown" workarounds that will achieve the results of this new FICM strategy....

FWIW, the injectors affected by stiction are not "sticky". They are not coated with any deposits that resists their traverse from one end of the bore to the other.... they are, however, the victim of fluid dynamics and physics.
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Old 11-17-2006, 09:04 AM   #5 (permalink)
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Re: Can you Clean Injector Spool Valves?

DJ,so when the plungers and bores wear they get tighter, interesting.........
The ends will lap and get smoother but they won't tighten up in the bore.
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Old 11-17-2006, 10:09 AM   #6 (permalink)
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Re: Can you Clean Injector Spool Valves?

Grampy_jim, thanks for the info
This morning, cold it would only tach up to 2 grand and maybe 15mph.
Do you think the new flash will cure the problem, or I need the flash plus injector's.
Is anyone doing reman's or where is a good place to get them.
Thanks
All
Tim
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Old 11-17-2006, 10:36 AM   #7 (permalink)
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Re: Can you Clean Injector Spool Valves?

[ QUOTE ]
The ends will lap and get smoother but they won't tighten up in the bore.

[/ QUOTE ]

I agree with you.
Thats what I was trying to get across, but I didn,t want to write a book on the subject. [img]/ubbthreads/images/graemlins/shrug.gif[/img] [img]/ubbthreads/images/graemlins/smile.gif[/img]
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Old 11-17-2006, 11:11 AM   #8 (permalink)
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Re: Can you Clean Injector Spool Valves?

I would really question whether to put diesel, or most any flush, into the crankcase of the 6.0 PSD. The PSD has a reservoir of lube oil, that doesn't drain when you change the oil, used for the HPOP. So it would take a while for the diesel/flush to get into the HPOP(at full strenght) and through the injectors, and then when you drained the flush out, you wouldn't get it all out, because the reservoir would still be full of the diesel/flush. Think I'd pass on the idea.
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Old 11-17-2006, 12:31 PM   #9 (permalink)
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Re: Can you Clean Injector Spool Valves?

[ QUOTE ]
I have not done the following but I've heard of guys draining all but a couple quarts of oil then adding Kerosene in the same amount as oil that drained out. Run engine on idle for about 5-10 minutes not gunning the engine. Drain that oil/kero mix, replace filters and refill with oil. The sticky injectors should fire better - at least for a while.

There are probably some old-timers that can comment on this procedure.

[/ QUOTE ]

That would be a really good way to destroy your engine! [img]/ubbthreads/images/graemlins/shrug.gif[/img]
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Old 11-17-2006, 11:01 PM   #10 (permalink)
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Re: Can you Clean Injector Spool Valves?

If you really want to try to clean the oil side, buy something made to do it.
Lubrication Specialists markets a product just for the PS engine. It's two quarts and you add it too your oil at a change.
I tried it and pulled a sample at the next change to see what it did, I haven't sent it off yet.
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Old 11-18-2006, 05:42 PM   #11 (permalink)
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Re: Can you Clean Injector Spool Valves? UPDATE

I took the truck to the dealer and it had never been back since new and was needing the 05E15 emissions recall. So I got the latest and greatest Flash with the 6.0L CALIBRATION TO REDUCE COLD ENGINE DRIVABILITY CONCERNS Technical service bulletin (TSB) 06-22-03, at no charge. It buzzes the injectors for 30 second upon shut down.
So if you have never been back for the recall you can get the new flash for free. Its going to be cold in the morning I will see how it goes with the new flash.
Tim [img]/ubbthreads/images/graemlins/biggrin.gif[/img]
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Old 11-18-2006, 05:52 PM   #12 (permalink)
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Re: Can you Clean Injector Spool Valves? UPDATE

Mine has never been reflashed either. Do you think I should have it flashed?? I am getting 21MPG and it runs great. I don't want to mess up my good fuel mileage.
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Old 11-18-2006, 08:10 PM   #13 (permalink)
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Re: Can you Clean Injector Spool Valves? UPDATE

Tim, Please let us know if this helps your cold start issues. I am also interested, as I am also having minor cold start issues. Thanks for the update. [img]/ubbthreads/images/graemlins/smile.gif[/img]
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Old 11-18-2006, 08:26 PM   #14 (permalink)
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Re: Can you Clean Injector Spool Valves? UPDATE

Personnally I would not mess with it, if its running good and you have no issues. You might not like what you get. It sounds like you have a good one with that kind of mileage. If its not broke, don,t try and fix it. [img]/ubbthreads/images/graemlins/shrug.gif[/img] [img]/ubbthreads/images/graemlins/smile.gif[/img]
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Old 11-18-2006, 10:50 PM   #15 (permalink)
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Re: Can you Clean Injector Spool Valves? UPDATE

[ QUOTE ]
If you really want to try to clean the oil side, buy something made to do it.
Lubrication Specialists markets a product just for the PS engine

[/ QUOTE ]

where is this stuff available?
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