Long crank
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Long crank
I've got a 2004 f250 6.0 that I've been having a long crank problem all of a sudden. The truck always starts eventually. Its runs fine and has all the power it normally does. When it's cold it starts right up. It's when you shut it off when it's hot it long cranks. The ipr % is 23 when the motor is warm at idle, and icp is at 590 ish at idle as well. Ficm voltage is around 47.5 to 48. Just looking for some direction to start looking towards
Postmaster
Joined: Aug 2015
Posts: 3,910
Likes: 18
From: NW IA
I've got a 2004 f250 6.0 that I've been having a long crank problem all of a sudden. The truck always starts eventually. Its runs fine and has all the power it normally does. When it's cold it starts right up. It's when you shut it off when it's hot it long cranks. The ipr % is 23 when the motor is warm at idle, and icp is at 590 ish at idle as well. Ficm voltage is around 47.5 to 48. Just looking for some direction to start looking towards
Where is the ICP located on your 04? If it's a late 04 you will have the oil rail that are more prone to leaks
Logistics Pro
Joined: Jul 2014
Posts: 4,673
Likes: 531
From: Houston, Texas
There are a number of common leaks points. Because it will start, I would think it's one of the smaller leak points. When the engine is cold, the oil is thicker, so it starts right up. When hot, the thinner oil will leak more easily. Typical points of failure are 1) the dummy plug o-rings (my guess), 2) stand pipes (if cash isn't an issue - stand pipes are more expensive - do these while you're replacing the dummy plugs, but the pipes don't fail as often)(make sure you have/get the upgraded parts from Ford), 3) the STC fitting on the HPOP, there's an upgraded part, 4) dang, having a brain fart forgetting the name, but the o-rings under the oil rails, and 5) injectors.
You may also have an IPR valve issue, pull it and see if the screen is intact. If not, and anyway while it's out, check the valve function and that it's not stuck open; clean it out. (search here for instructions
There's prolly more - I'm no expert - but those are common are relatively easy/inexpensive to fix. Also, some of the others typically don't allow it to start though.
You may also have an IPR valve issue, pull it and see if the screen is intact. If not, and anyway while it's out, check the valve function and that it's not stuck open; clean it out. (search here for instructions
There's prolly more - I'm no expert - but those are common are relatively easy/inexpensive to fix. Also, some of the others typically don't allow it to start though.
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There are a number of common leaks points. Because it will start, I would think it's one of the smaller leak points. When the engine is cold, the oil is thicker, so it starts right up. When hot, the thinner oil will leak more easily. Typical points of failure are 1) the dummy plug o-rings (my guess), 2) stand pipes (if cash isn't an issue - stand pipes are more expensive - do these while you're replacing the dummy plugs, but the pipes don't fail as often)(make sure you have/get the upgraded parts from Ford), 3) the STC fitting on the HPOP, there's an upgraded part, 4) dang, having a brain fart forgetting the name, but the o-rings under the oil rails, and 5) injectors.
You may also have an IPR valve issue, pull it and see if the screen is intact. If not, and anyway while it's out, check the valve function and that it's not stuck open; clean it out. (search here for instructions
There's prolly more - I'm no expert - but those are common are relatively easy/inexpensive to fix. Also, some of the others typically don't allow it to start though.
You may also have an IPR valve issue, pull it and see if the screen is intact. If not, and anyway while it's out, check the valve function and that it's not stuck open; clean it out. (search here for instructions
There's prolly more - I'm no expert - but those are common are relatively easy/inexpensive to fix. Also, some of the others typically don't allow it to start though.
I do know that the owner before me, has done the stand pipes and dummy plugs, now I dont not know what the rate of them going bad are. I'll guess I'll pull the ipr and check as it's not the worst to get it at. Thanks for the response
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Postmaster
Joined: Aug 2015
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From: NW IA
You will not have an STC fitting. That said it's still possible the pump is getting weak, they are more prone to fail than the 05 and up style pump.
Once it's warmed up and hot, what are your IPR and ICP %'s whilst cranking?
Those hot idle #'s are perfect, but really need to know what it's taking to get it going with hot, thin oil.
Post that and will go from there before you pull the IPR, since it's a bit more work sitting under the turbo to remove.
I'm also curious what you are calling a "long crank" hot, how many seconds?
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Your engine is a cross over of sorts, with newer wavy style oil rails and older style pump.
You will not have an STC fitting. That said it's still possible the pump is getting weak, they are more prone to fail than the 05 and up style pump.
Once it's warmed up and hot, what are your IPR and ICP %'s whilst cranking?
Those hot idle #'s are perfect, but really need to know what it's taking to get it going with hot, thin oil.
Post that and will go from there before you pull the IPR, since it's a bit more work sitting under the turbo to remove.
I'm also curious what you are calling a "long crank" hot, how many seconds?
You will not have an STC fitting. That said it's still possible the pump is getting weak, they are more prone to fail than the 05 and up style pump.
Once it's warmed up and hot, what are your IPR and ICP %'s whilst cranking?
Those hot idle #'s are perfect, but really need to know what it's taking to get it going with hot, thin oil.
Post that and will go from there before you pull the IPR, since it's a bit more work sitting under the turbo to remove.
I'm also curious what you are calling a "long crank" hot, how many seconds?
Logistics Pro
Joined: Jul 2014
Posts: 4,673
Likes: 531
From: Houston, Texas
Yep. If you're a cheap a$$ like me, swap in a known good one to confirm. Easy job. Otherwise, FICMrepair is everyone's recommendation here. Great sponsor.