Does the hpop fail quickly or over time?
FTE-Spread The Knowledge
Joined: Feb 2008
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Have you checked or changed your fuel filter lately? How long does it take to fill the fuel bowl after it has been emptied? Any strange colors or sediment in fuel bowl bottom?
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
Unburnt diesel, not black smoke, poorly burnt diesel? Start the engine and place the oil fill cap upside down on top of the oil fill tube and tell us what happens with that cap.
Post Fiend
Joined: Mar 2015
Posts: 5,277
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From: Blairsville, Pennsylvania
Or...as I just had...an injector failed internally and I am getting a rebuild on them.
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Freshman User
Joined: Jul 2011
Posts: 28
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From: West Richland, Wa
Fuel filter changed out last oil change, I do not do it every time I change oil, but by chance I did. I did notice a black layer, kind of looked like overspray, on the metal top if the filter. It wiped off with my finger.
I recently had a heavy equipment mechanic tell me there was an algae that is causing problems in fuel in the Pacific NW, but I was sceptical of that. When I pulled my filter last time I was surprised at what I saw and figure he must have been right.
NOW, after reading for hours on this forum I am pretty sure there are o ring issues, not algae. How can algae live in diesel?
I will check the filter again and check for blow by at the filler.
How do I watch the fuel bowl fill, sounds like a great way to cover everything in diesel?
This just happened quickly, I realize there may be a lot of things to consider but something let go and instantly is started running bad.
I recently had a heavy equipment mechanic tell me there was an algae that is causing problems in fuel in the Pacific NW, but I was sceptical of that. When I pulled my filter last time I was surprised at what I saw and figure he must have been right.
NOW, after reading for hours on this forum I am pretty sure there are o ring issues, not algae. How can algae live in diesel?
I will check the filter again and check for blow by at the filler.
How do I watch the fuel bowl fill, sounds like a great way to cover everything in diesel?
This just happened quickly, I realize there may be a lot of things to consider but something let go and instantly is started running bad.
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
Fuel filter changed out last oil change, I do not do it every time I change oil, but by chance I did. I did notice a black layer, kind of looked like overspray, on the metal top if the filter. It wiped off with my finger.
I recently had a heavy equipment mechanic tell me there was an algae that is causing problems in fuel in the Pacific NW, but I was sceptical of that. When I pulled my filter last time I was surprised at what I saw and figure he must have been right.
NOW, after reading for hours on this forum I am pretty sure there are o ring issues, not algae. How can algae live in diesel?
I will check the filter again and check for blow by at the filler.
How do I watch the fuel bowl fill, sounds like a great way to cover everything in diesel?
This just happened quickly, I realize there may be a lot of things to consider but something let go and instantly is started running bad.
I recently had a heavy equipment mechanic tell me there was an algae that is causing problems in fuel in the Pacific NW, but I was sceptical of that. When I pulled my filter last time I was surprised at what I saw and figure he must have been right.
NOW, after reading for hours on this forum I am pretty sure there are o ring issues, not algae. How can algae live in diesel?
I will check the filter again and check for blow by at the filler.
How do I watch the fuel bowl fill, sounds like a great way to cover everything in diesel?
This just happened quickly, I realize there may be a lot of things to consider but something let go and instantly is started running bad.
https://www.bellperformance.com/bell...sel-fuel-algae
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
On the rear of the fuel bowl is a yellow plastic lever, it is a drain valve. You spin the lever clockwise and it will open the drain, which is (well...should be) connected to a tube that runs down the front of the block to the passenger's side in the vicinity of the front edge of the axle and the steering linkage there. Place an oil drain pan under there, on top of a large piece of cardboard if you can scrounge one up and open the drain with key off. You can turn the key on to run the pump and see how it flows there. You may be able to open up the filter after it's drained and have someone hit the key for you so you can watch, I haven't done it and don't know what kind of bath you'll get.
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More Turbo
Joined: Nov 2016
Posts: 545
Likes: 2
From: SGV SoCal
I would go back to first principles. Your code reader indicates ICP low out of range.
That it the HPOP pressure is out of range on the low side. The sensor could be wrong, so unplug it and run the thing. Is it better teh same or worse? The other possibility is that the sensor is correct and your HPOP is too low. Take a good look at the IPR. It's job is to control the HPOP based on the feedback from the ICP. I would measure the coil resistance, check the connector, make sure the nut is inplace. When the ICP is unpluged, the CPU uses a lookup table to set the IPR. Next you need a ODB code reader that can tell you what the IPR is trying to do in real time.
That it the HPOP pressure is out of range on the low side. The sensor could be wrong, so unplug it and run the thing. Is it better teh same or worse? The other possibility is that the sensor is correct and your HPOP is too low. Take a good look at the IPR. It's job is to control the HPOP based on the feedback from the ICP. I would measure the coil resistance, check the connector, make sure the nut is inplace. When the ICP is unpluged, the CPU uses a lookup table to set the IPR. Next you need a ODB code reader that can tell you what the IPR is trying to do in real time.
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Freshman User
Joined: Jul 2011
Posts: 28
Likes: 0
From: West Richland, Wa
Colorado350 interesting about the "algae", it does exist, not really algae though.
I looked at my filter and it is very clean, I lay has about 4,000 miles on it. No black anywhere in it.
Walleye Hunter, I drained the bowl, missed the bucked, lots of floor dry. I made a dam around the bowl with an old towel and had my wife turn on the key until the vacuum pump turned on and no fuel entered the bowl. I even had her hit the starter and nothing. Could it be as easy as a fuel pump?
Karol, Is that what the ICP is telling us?
I also checked to make sure there was voltage to the IPR during cranking and there was.
Gonna look up info on dead fuel pumps.
I looked at my filter and it is very clean, I lay has about 4,000 miles on it. No black anywhere in it.
Walleye Hunter, I drained the bowl, missed the bucked, lots of floor dry. I made a dam around the bowl with an old towel and had my wife turn on the key until the vacuum pump turned on and no fuel entered the bowl. I even had her hit the starter and nothing. Could it be as easy as a fuel pump?
Karol, Is that what the ICP is telling us?
I also checked to make sure there was voltage to the IPR during cranking and there was.
Gonna look up info on dead fuel pumps.
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
Like Whitey Ford says, turn the key on, the fuel pump sits under the driver's seat inside the frame and it runs for about 20 seconds when you first turn the key on. It sounds similar to the vacuum pump.
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Freshman User
Joined: Jul 2011
Posts: 28
Likes: 0
From: West Richland, Wa
Tank has 1/4 or less, I have not done the tank mods, read about that last night.
I will see if the pump is running this morning before I go to work, I checked the fuse and swapped out the relay last night when I had 5 minutes.
Thanks for all of your help so far. I hope it is the fuel pump.
I will see if the pump is running this morning before I go to work, I checked the fuse and swapped out the relay last night when I had 5 minutes.
Thanks for all of your help so far. I hope it is the fuel pump.
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Freshman User
Joined: Jul 2011
Posts: 28
Likes: 0
From: West Richland, Wa
Pretty sure the fuel pump is dead, can't hear it running unless it is super quiet. There is 11.85 volts to it. I can hear and feel kind of a slight click when the key is turned on and off but no hum likes it running.
If the pump is dead how does it still run? It barely runs tho.
Off to work
If the pump is dead how does it still run? It barely runs tho.
Off to work