High IPC and no start
#1
High IPC and no start
Hi everyone, I've searched this but I can't seem to find anyone with a similar issue. I have an 02 PSD with a no start. I'm getting high ICP pressure while cranking(2000ish psi). It will start most of the time if I unplug the ICP. The ICP and IPR are new and I cleaned the connector on the ICP as the old one was leaking. I get tons of smoke while cranking. Any ideas on the high pressure? Thanks everyone!
#2
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#4
Hi everyone, I've searched this but I can't seem to find anyone with a similar issue. I have an 02 PSD with a no start. I'm getting high ICP pressure while cranking(2000ish psi). It will start most of the time if I unplug the ICP. The ICP and IPR are new and I cleaned the connector on the ICP as the old one was leaking. I get tons of smoke while cranking. Any ideas on the high pressure? Thanks everyone!
What is the IPR Duty Cycle while Cranking?
#5
How many miles on the injectors? Does it do this both hot and cold, or just cold? Need to know if the injectors are trying to fire. A visual inspection with the valve covers off will tell you how many injectors are spitting oil while cranking cold.
Also, does this have a rebuilt HPOP? We've seen good pressure but lack of volume from a rebuilt HPOP before.
Also, does this have a rebuilt HPOP? We've seen good pressure but lack of volume from a rebuilt HPOP before.
#6
2000-2200 PSI is normal cranking ICP, you can skip over that part.
Starting with ICP sensor unplugged and not starting with it plugged in flips a neon arrow on - pointing at your non-OEM ICP sensor.
White smoke while cranking is low ICP, low fuel pressure, low compression, bad sticks, or bad glow plug circuit. Your non-OEM ICP is top suspect, then the Glow Plug system is worth testing.
Starting with ICP sensor unplugged and not starting with it plugged in flips a neon arrow on - pointing at your non-OEM ICP sensor.
White smoke while cranking is low ICP, low fuel pressure, low compression, bad sticks, or bad glow plug circuit. Your non-OEM ICP is top suspect, then the Glow Plug system is worth testing.
#7
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2000-2200 PSI is normal cranking ICP, you can skip over that part.
Starting with ICP sensor unplugged and not starting with it plugged in flips a neon arrow on - pointing at your non-OEM ICP sensor.
White smoke while cranking is low ICP, low fuel pressure, low compression, bad sticks, or bad glow plug circuit. Your non-OEM ICP is top suspect, then the Glow Plug system is worth testing.
Starting with ICP sensor unplugged and not starting with it plugged in flips a neon arrow on - pointing at your non-OEM ICP sensor.
White smoke while cranking is low ICP, low fuel pressure, low compression, bad sticks, or bad glow plug circuit. Your non-OEM ICP is top suspect, then the Glow Plug system is worth testing.
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#8
#9
Thanks for all the replies, I replaced the icp again with one from the dealer and im still having the same symptoms. It still starts fine with the ICP unplugged, and will sputter and not start with it plugged in. The koeo ICP voltage is 0.22. The IPR duty cycle while cranking is about 38-42%. Once the truck is running with the ICP plugged in it runs great, and will restart no problem if the engine is still warm. The truck has low miles, about 65k, but I would assume crazy high hours as it has spent most of its life idling. The HPOP has never been changed, its original OEM. I will try to pull the valve covers today and see if the injectors are firing. Also, the glow plugs and relay were changed a few months ago with OEM parts, but I will double check that everything is working.
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#12
Monitoring ICP psi while cranking can be deceiving. If cranking ICP is low, the PCM will revert to, and report, an inferred value instead of the actual pressure. Monitor ICP voltage while cranking instead. Let us know what that value is. You can also use a 0-3000 psi mechanical gauge and compare it the reported ICP psi to verify. Are/were there any DTCs present?
#13
#14
As i had the same problem so just an idea.
We also have 50-60F here and mine does not start. Also big smoke leaves the exhaust. First i checked fuel, filter and glowplug system....nothing. Than changed CPS. No help...
With plug in the block heater i get him hard to run. After this I found the fault as the exhaust on one side of the engine stays cold. It was an unplugged UVC-plug on the passanger side.
We also have 50-60F here and mine does not start. Also big smoke leaves the exhaust. First i checked fuel, filter and glowplug system....nothing. Than changed CPS. No help...
With plug in the block heater i get him hard to run. After this I found the fault as the exhaust on one side of the engine stays cold. It was an unplugged UVC-plug on the passanger side.
#15
High operating hours, hard cold start, good glow plugs and relay, new ICP sensor, new IPR, once warm it starts fine, lots of white smoke with diesel smell...hmmm...MIGHT be injector time. If you read the cold start thread in my signature line, there are some videos of mine trying to start that sound similar to your description. It ended up being injectors. Yours could be something else, but it sounds similar.
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