It's another cold start issue.
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Senior User
Joined: Aug 2011
Posts: 125
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From: Delta British Columbia
It's another cold start issue.
All right, the trucks a 2006 build MY 06 F550.
when the truck was bought a year ago, it got the full treatment. New FICM, batteries, all eight injectors OEM. (had two that were underperforming, one in each bank, so decided to do all eight.) Updated the stand pipes and dumby plugs, all eight glow plugs, STC fitting was replaced before purchasing. Updated turbo lines, new OEM oil cooler, full egr delete, BD screamer turbo and a mild tune from gearhead and a 6.4 starter.
Now the problem.
It's been a little bit of a problem for a while now, everytime I go to start the truck first thing in the morning especially after sitting all night it has a fairly long crank. (Longer then 5 seconds) but it turns over everytime. It only does this when cold and sitting for longer then 4-6hours. Ironically if it's hot or been running for a period of time and it's turned off and then turned on it fires up right away with not fuss or anything.
I've pulled the ICP and there is oil in the rail, I've swapped the glow plug relay with another 6.0 same problem still. The only thing I have left to think of is the IPR valve. I have noticed according to my edge CTS2 that upon first cold start of the day the IPR is commanded to 85%
Is it possible to assume the IPR is on its way out? I can't really thing of anything else to look for?
Thanks!
when the truck was bought a year ago, it got the full treatment. New FICM, batteries, all eight injectors OEM. (had two that were underperforming, one in each bank, so decided to do all eight.) Updated the stand pipes and dumby plugs, all eight glow plugs, STC fitting was replaced before purchasing. Updated turbo lines, new OEM oil cooler, full egr delete, BD screamer turbo and a mild tune from gearhead and a 6.4 starter.
Now the problem.
It's been a little bit of a problem for a while now, everytime I go to start the truck first thing in the morning especially after sitting all night it has a fairly long crank. (Longer then 5 seconds) but it turns over everytime. It only does this when cold and sitting for longer then 4-6hours. Ironically if it's hot or been running for a period of time and it's turned off and then turned on it fires up right away with not fuss or anything.
I've pulled the ICP and there is oil in the rail, I've swapped the glow plug relay with another 6.0 same problem still. The only thing I have left to think of is the IPR valve. I have noticed according to my edge CTS2 that upon first cold start of the day the IPR is commanded to 85%
Is it possible to assume the IPR is on its way out? I can't really thing of anything else to look for?
Thanks!
Mountain Pass
Joined: Jun 2014
Posts: 231
Likes: 4
From: Texas
I had long crank cold after having HPOP replaced. I pulled ICP and there was oil in rail. Leak was on opposite side.
Best place to start is having a OBDII monitor like Scangauge 2 or Forscan
Here are some good videos from Diesel Tech Ron:
Although you are getting a start now, if it's a leak it is just a matter of time before no starts occur.
Best place to start is having a OBDII monitor like Scangauge 2 or Forscan
Here are some good videos from Diesel Tech Ron:
Although you are getting a start now, if it's a leak it is just a matter of time before no starts occur.
Lead Driver
Joined: Dec 2006
Posts: 6,496
Likes: 94
From: So. Jersey
By pulling the ICP and seeing the rail full of oil you confirmed no leak on the passenger side. Now you need to pull the drivers side valve cover and pull the ICP port block off plug to see if that side is holding oil. If it is low or no oil in that rail then obviously theres a leak.
One other thing to check is monitor CAM/CRANK Sync and FICM sync along with FICM voltage. You could have a faulty cam or crank sensor that isn't syncing right away on a cold start.
On the initial cold start KOEO what is the ICP voltage reading? Should be around .24v and on initial crank it needs to hit 500 psi or .96ish to fire the injectors.
One other thing to check is monitor CAM/CRANK Sync and FICM sync along with FICM voltage. You could have a faulty cam or crank sensor that isn't syncing right away on a cold start.
On the initial cold start KOEO what is the ICP voltage reading? Should be around .24v and on initial crank it needs to hit 500 psi or .96ish to fire the injectors.
Former Vendor
Joined: Feb 2010
Posts: 1,803
Likes: 4
It can be normal for an IPR to hit 85% for just a second upon initial cranking, but it should settle back down into the mid 40s or so after a couple of seconds. You can also check your injection control pressure psi numbers during these elongated cranks and verify that it’s not slowly counting up to over 500. Ideally, you should be well over 500 within one second of starter engagement.
If those numbers aren’t where they need to be, you have a place to start. The other thing that is super common, of course, are issues with the FICM. Just make sure that both key on engine off and during cranking your FICM main power numbers are above 45. If you do have a problem with the FICM or for that matter need any parts to resolve a high-pressure oil system or another challenge, hit us up! We carry close to 16 million parts and will not be beat on price. Hope this helps you!
We are FICMRepair.com.
Ed
If those numbers aren’t where they need to be, you have a place to start. The other thing that is super common, of course, are issues with the FICM. Just make sure that both key on engine off and during cranking your FICM main power numbers are above 45. If you do have a problem with the FICM or for that matter need any parts to resolve a high-pressure oil system or another challenge, hit us up! We carry close to 16 million parts and will not be beat on price. Hope this helps you!
We are FICMRepair.com.
Ed
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Senior User
Joined: Aug 2011
Posts: 125
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From: Delta British Columbia
Thanks guys for all the suggestions and help. The trucks gona be In service 6 days a week for the next little while so I'll have to attempt everything on Sundays.
Got my obdlink in the mail, so as soon as that comes I'll get forscan up and running.
To answer some of the questions though, I have great FICM voltage and perfect ficm sync on KOEO and KOER.
I don't know what my ICP voltage is as my CTS doesn't moniymo that or CAM/CRANK sync. Will definitely be looking at that once I'm able to get forscan up and running
My ICP itself climbs pretty quickly on initial start up and does get over 500psi pretty nicely, so you can see why I'm a bit stumped by this potential problem.
Got my obdlink in the mail, so as soon as that comes I'll get forscan up and running.
To answer some of the questions though, I have great FICM voltage and perfect ficm sync on KOEO and KOER.
I don't know what my ICP voltage is as my CTS doesn't moniymo that or CAM/CRANK sync. Will definitely be looking at that once I'm able to get forscan up and running
My ICP itself climbs pretty quickly on initial start up and does get over 500psi pretty nicely, so you can see why I'm a bit stumped by this potential problem.
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