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post #1 of 9 Old 10-17-2013, 12:20 AM Thread Starter
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Exclamation 2006 long crank time after sitting

If I leave my truck sit and cool down for a couple of hours and come back out it takes a lot longer crank than it use to to start up. I've checked my ficm voltages and they're right at 48.5 - 48.7 from sitting, cycling the key and cranking. No codes thrown. I don't have a scangauge yet. Motorcraft oil and fuel filters changed at 105k, now at 107k. I'm using 15w40 Motorcraft oil, it's about 60-70* outside. Truck is 100% stock, besides the lift, tires and wheels. I've noticed a decrease in fuel economy when this starting happening about 2 weeks ago. What can be causing this?

Video of starting truck this morning

Thanks for any suggestions
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post #2 of 9 Old 10-17-2013, 06:50 AM
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Same was happening with my 2004, turned out to be the hpop.

If you can get a gauge and test icp, that'll narrow it down for you.

The oil pressure slowly leaks out over time and if you crank long enough it'll build back up enough to start.

When it's hot does it restart right away?

could also be the dummy plugs. I replaced mine first hoping that was it, but no luck.

EDIT: I just watched your video and my truck took much longer than that to start cold with a bad hpop. I had to crank it a few times for it to finally start up. So, either it's just barely starting to lose high oil pressure, or it's something else. I'd find a gauge and test the icp.

Last edited by volleyjiver; 10-17-2013 at 06:53 AM. Reason: new information
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post #3 of 9 Old 10-17-2013, 07:17 AM
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Honestly it doesn't sound too bad... It would have to get a lot worse to track it down.

You said on your video that you had soldered the ficm already, was it worse before or after the repair?

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post #4 of 9 Old 10-17-2013, 07:58 AM Thread Starter
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Quote:
Originally Posted by volleyjiver View Post
Same was happening with my 2004, turned out to be the hpop.

If you can get a gauge and test icp, that'll narrow it down for you.

The oil pressure slowly leaks out over time and if you crank long enough it'll build back up enough to start.

When it's hot does it restart right away?

could also be the dummy plugs. I replaced mine first hoping that was it, but no luck.

EDIT: I just watched your video and my truck took much longer than that to start cold with a bad hpop. I had to crank it a few times for it to finally start up. So, either it's just barely starting to lose high oil pressure, or it's something else. I'd find a gauge and test the icp.
Starts immediately when it's warm, less than 2 seconds.

Seems to steadily be getting worse every day.
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post #5 of 9 Old 11-10-2013, 04:39 PM
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OP, have you found out anything on this issue?

I have the exact same issue. I have put in updated D-Plugs, Stand-Pipes, Injector top o-rings and the High Pressure Oil o-rings under the Ball-tubes. I still have the issue. I am waiting on a ScanGuage to monitor and hope to get pointed in the right direction.

I also have an updated STC fitting to go in, but I want to see how the oil pressure builds with the ScanGauge before doing the STC or looking at the crank and/or cam shaft sensor or FICM.

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post #6 of 9 Old 11-15-2013, 11:33 PM Thread Starter
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I have not found out anything else as of yet, been far too busy at work to even look at it. I did have a small leak in my fuel pressure regulator so I did the blue spring upgrade. I now have 109k on the truck and it seems to be getting worse. Tomorrow I'm going to load test the batteries, change the oil and filters to 10w30 and swap a known good ficm just go see if any of that will cure it. It is puffing a little black smoke when it first cranks over when cold. No loss of coolant and its all clean. Anything else I may be missing?
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post #7 of 9 Old 11-16-2013, 06:26 PM
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Quote:
Originally Posted by bansheeman View Post
I have not found out anything else as of yet, been far too busy at work to even look at it. I did have a small leak in my fuel pressure regulator so I did the blue spring upgrade. I now have 109k on the truck and it seems to be getting worse. Tomorrow I'm going to load test the batteries, change the oil and filters to 10w30 and swap a known good ficm just go see if any of that will cure it. It is puffing a little black smoke when it first cranks over when cold. No loss of coolant and its all clean. Anything else I may be missing?
There seems to have been so many of these cases resolved with the dummy plug/stand pipe update, STC fitting or injector top o-rings. From my understanding if when the truck fires up that it idles clean, it's not likely going to be a FICM.

I was expecting my scangauge to be here by now, but it won't be here till Monday by the looks of it. I will let you know what I find, it may point you in the right direction. I am thinking in my case it may be the STC fitting or weak HPOP if oil pressure is my issue. If it takes time to get FICM sync, it may be my cam and/or crank position sensors. I did my IPR valve and ICP sensor last weekend with no improvement.

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ScanGauge II
Updated STC fitting
High idle mod, blue spring update.
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post #8 of 9 Old 11-16-2013, 06:31 PM Thread Starter
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I should be getting a scangauge Monday as well. If it happens to be oil related I think I'll probably just tear the truck down and do 100% of everything from studs, gaskets and all that's easy to do while the motor is out. Makes all the sense to me to do it all at once rather than fix one thing and have it be something new a few months later that has me taking the thing apart again.
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post #9 of 9 Old 11-17-2013, 08:09 AM
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Yes the ScanGuage II is going to be a big help. money well spent considering you want to keep it all stock. If it is a leak in the HPO system. You will be surprised at how simple the job can be without pulling the engine or cab. that is not necessary unless you just want to keeping going till you reach the heads, but that is another job. One you get the turbo out, you will take a step back a say, "yeah this ain't too bad". it is just pealing away the layers to get to the STC, standpipes, and dummy plugs. might as well do a chemical flush now and then replace your oil cooler while you are there. then add a coolant filter after its all done. its all very not difficult to do.

there are great youtube videos by srmastertech, joediesel, and dieseltechron, and others. and all the help you can find right here. hit me up if you have any questions. I'm no expert but I have been there a few months back.

Drive it like you stole it, Or I will.

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If your signature block picture is bigger than most peoples post, maybe it's time to fix it. I suggest you tape a photo of your truck to your computer screen, then it only screws up your view.
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