Everyone, meet Bonehead Jr.
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Logistics Pro
Joined: Jul 2014
Posts: 4,673
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From: Houston, Texas
Everyone, meet Bonehead Jr.
My son is joining the site as we try to diagnose his first diesel. I told him y'all would take pity on the cross he must bear and help him figure this out.
We checked fuel flow, and the bubble test. We held the valve down in the oil filter and watched it fill up in about 10 seconds and see it register on the dash gauge.
My Scan Gauge say it pushes 180 RPM while cranking, but it only gets about 225 on the ICP sensor and the IPR instantly maxxes out at 84. It has thrown a code P2623 for a stuck IPR valve.
I hear a hiccup in the crank, but I'll let y'all listen and tell me. Eric (BHjr) is gonna post a YouTube link of it.
What are the chances of it being just a hole in the IPR screen or bad valve? I'm afraid we have a HP leak and need to do the air test to find it. I've never done that test and barely hear (rock concerts), my son hears but doesn't know what to listen for. arrrrgh.
We checked fuel flow, and the bubble test. We held the valve down in the oil filter and watched it fill up in about 10 seconds and see it register on the dash gauge.
My Scan Gauge say it pushes 180 RPM while cranking, but it only gets about 225 on the ICP sensor and the IPR instantly maxxes out at 84. It has thrown a code P2623 for a stuck IPR valve.
I hear a hiccup in the crank, but I'll let y'all listen and tell me. Eric (BHjr) is gonna post a YouTube link of it.
What are the chances of it being just a hole in the IPR screen or bad valve? I'm afraid we have a HP leak and need to do the air test to find it. I've never done that test and barely hear (rock concerts), my son hears but doesn't know what to listen for. arrrrgh.
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
Classic example of uneven cranking. Here is the video (Eric (cool name btw) I think you need 20 or 30 posts before you can post links like this and horizontal filming and posting is much easier to watch).
Of course you need 500 psi to start and unplugging the ICP is the first thing to try. The IPR code could be a good clue or a high pressure oil leak. What year model is the truck? If 2004, where is the ICP? Un even cranking can be valve train or even cylinder/piston related but it should still start and run.
Of course you need 500 psi to start and unplugging the ICP is the first thing to try. The IPR code could be a good clue or a high pressure oil leak. What year model is the truck? If 2004, where is the ICP? Un even cranking can be valve train or even cylinder/piston related but it should still start and run.
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Logistics Pro
Joined: Jul 2014
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From: Houston, Texas
Hey, this is an '06. I discoed the ICP and no difference. We went ahead and removed the IPR valve, I don't even think the wire was connected to it, and it unscrewed by hand as if it wasn't even in all the way. The screen had a ding, part of the plastic broken off and the screen pushed in, but no hole.
Token Redneck
Joined: Jun 2007
Posts: 9,331
Likes: 341
From: Breckenridge, TX
Cranks smooth now too, it's doing it's Cold-ICP-sensor long crank deal again and taking 5-10 seconds on cold starts.This guy had a booster on the batteries, but once it caught, doesn't sound like any hard part compression problems once it catches. I'd call it more a hitch in the starter's push rather than a surge like if you have a cylinder with low compression?
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Logistics Pro
Joined: Jul 2014
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From: Houston, Texas
I was on the fence about it as well. Definite hiccup, but sounded a lot better with the batteries charged. But it shouldn't keep it from starting, so we're off to the dealer for a new IPR screen tomorrow. IIRC, they don't know what one is and try to sell the entire IPR. Eric found a part number online, so we'll try that out. It just seems like the wire being off the IPR mighta kept it from starting - does it explain why SG immediately maxxes to 84IPR when it cranks?
Fleet Owner
Joined: Apr 2012
Posts: 27,307
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From: Spanaway
While you have the valve out you may want to flush it with come carb cleaner.
Go get a small screwdriver that fits into the hole behind the screen and press down
and hold . Then take the spray cleaner and use the little straw and flush it out.
Or you can just keep this for later.
Go get a small screwdriver that fits into the hole behind the screen and press down
and hold . Then take the spray cleaner and use the little straw and flush it out.
Or you can just keep this for later.
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Logistics Pro
Joined: Jul 2014
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From: Houston, Texas
Thanks, Sean, great advice as always. I check out the valve operation and clean it all out before installing the new screen and plugging it back in.
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Token Redneck
Joined: Jun 2007
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From: Breckenridge, TX
I missed this. If the IPR was open because it wasn't wired in then this would be exactly what would be happening. When you unplugged the ICP, the FICM was running the spool valves but it didn't matter because it still takes a little over 400psi on the oil side to move the plunger in the injector. It won't even hiccup unless there's enough HPO pressure to compress the spring in the injectors.
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Logistics Pro
Joined: Jul 2014
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From: Houston, Texas
I'm not positive the IPR wire was discoed. My son tore down to the FICM bolts and I came over to show him how to release the harness. After getting that and the harness ground/injectors outta the way, I found the IPR wire laying off to the right. Maybe he or I pulled it off without knowing, but I think it has a retaing wire to prevent that. And when I went to break the valve lose, it just turned like my socket fell offf, barely hand tight. So, something ain't right.
Recall that this was a stolen truck, most of which usually run. It's possible the previous owner either wrecked it first offroading and decided to report it stolen. He stripped wheels etc and cut the IPR to insure it was totalled by insurance.
Or, he blew the engine first, took out the IPR while diagnosing, then decided to report it stolen, stripped it and wrecked the body.
Dealer wanted $55 for the screen set, so we're gonna order it online. See one on eBay for $37.
Recall that this was a stolen truck, most of which usually run. It's possible the previous owner either wrecked it first offroading and decided to report it stolen. He stripped wheels etc and cut the IPR to insure it was totalled by insurance.
Or, he blew the engine first, took out the IPR while diagnosing, then decided to report it stolen, stripped it and wrecked the body.
Dealer wanted $55 for the screen set, so we're gonna order it online. See one on eBay for $37.
Former Vendor
Joined: Feb 2010
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I'm not positive the IPR wire was discoed. My son tore down to the FICM bolts and I came over to show him how to release the harness. After getting that and the harness ground/injectors outta the way, I found the IPR wire laying off to the right. Maybe he or I pulled it off without knowing, but I think it has a retaing wire to prevent that. And when I went to break the valve lose, it just turned like my socket fell offf, barely hand tight. So, something ain't right.
Recall that this was a stolen truck, most of which usually run. It's possible the previous owner either wrecked it first offroading and decided to report it stolen. He stripped wheels etc and cut the IPR to insure it was totalled by insurance.
Or, he blew the engine first, took out the IPR while diagnosing, then decided to report it stolen, stripped it and wrecked the body.
Dealer wanted $55 for the screen set, so we're gonna order it online. See one on eBay for $37.
Recall that this was a stolen truck, most of which usually run. It's possible the previous owner either wrecked it first offroading and decided to report it stolen. He stripped wheels etc and cut the IPR to insure it was totalled by insurance.
Or, he blew the engine first, took out the IPR while diagnosing, then decided to report it stolen, stripped it and wrecked the body.
Dealer wanted $55 for the screen set, so we're gonna order it online. See one on eBay for $37.
You our may also want to look at just picking up the whole Snap To Connect HPOP kit as that comes with the updates STC fitting, the screen kit, and a turbo mounting kit all for $51.21 at http://www.ficmrepair.com/index.cfm/page/ptype=product/product_id=79/category_id=-1/mode=prod/prd79.htm
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Logistics Pro
Joined: Jul 2014
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From: Houston, Texas
FWIW, we carry that screen kit for $34.85 at IPR Screen kit 3C3Z-9H529-A.
You our may also want to look at just picking up the whole Snap To Connect HPOP kit as that comes with the updates STC fitting, the screen kit, and a turbo mounting kit all for $51.21 at FORD OEM 6.0L V8 Snap to Connect Kit 4C3Z-9B246-F
You our may also want to look at just picking up the whole Snap To Connect HPOP kit as that comes with the updates STC fitting, the screen kit, and a turbo mounting kit all for $51.21 at FORD OEM 6.0L V8 Snap to Connect Kit 4C3Z-9B246-F
Former Vendor
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Ed
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Logistics Pro
Joined: Jul 2014
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From: Houston, Texas
Even a blind dog finds a bone from time to time. This truck fired right up as soon as I replaced the IPR screen and connected the wire. I definitely think someone intentionally sabotaged the truck, either the previous owner to ensure the insurance company totalled it, or someone in the auction/towing process to make it go for a low price. That would explain why it auctioned higher -I couldn't believe the other guy hung on so long. It was just me and him for the final $1500, which was $700 higher than I thought it'd go for at the most. He stuck in there like he knew it would run, I stuck on a hunch it would run.
We still got a ways to go. Need to replace a bed side, buy a tailgate, and front door panels with power switches. I got an old black grill, but we want to find a chrome one - the new aftermarket ones are pretty cheap.
The dash bezel on this truck is cool. All red lights with the brand "Regency" lit up. I'll try to post pics. Just found out the thief cut the headlight bulbs off. Prolly had high dollar bulbs, but why cut the wires and steal the whole plug?
We still got a ways to go. Need to replace a bed side, buy a tailgate, and front door panels with power switches. I got an old black grill, but we want to find a chrome one - the new aftermarket ones are pretty cheap.
The dash bezel on this truck is cool. All red lights with the brand "Regency" lit up. I'll try to post pics. Just found out the thief cut the headlight bulbs off. Prolly had high dollar bulbs, but why cut the wires and steal the whole plug?
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