Cant believe it after all of the variations of possible problems you have been through. I was sure it was going to start this time. You REALLY do deserve a break with this. I personally would have been totally lost a long way back so I have complete admiration for your knowledge and calmness through out this and have full faith that you will find the issue soon.
My wife watched this with me and said “ we should look for a new truck with warranty”. Probably not a bad idea. I just upgraded my Ender to a Bambu P1S. Wow! Can’t wait to print some advanced filaments.
Awshit. I was crossing all my appendages for ya, Bruce. Alright, make up a comprehensive list of what you've done and triplecheck it all. Show it to any diesel buffs or Fuso mechanics to see if they have anything to add. Can you send your fuel out to a testing lab, like the oil? Prayers are sent (even though I don't do a whole lot of that.) You'll get it!
Not sure about testing diesel - but also don’t think it would go from good to not functioning in a few weeks time (?) I’ll be doing a summary troubleshoot coming soon!
That cinch clamp fitting you removed looks like the same kind of crimp you use for Pex B cinch clamps. Ryobi makes a nice and reasonably priced crimper for those. Might be useful if you want to crimp them in narrow spaces. (Which is what I am going to be doing when I completely replace all the plumbing in my RV, since it's a pre-Pex type of plastic that fails early, and has already caused some leaks...)
Hey mate, I was following your progress as I had exactly the same symptoms. I got a bit impatient waiting for you though and went ahead to get a mechanic to look at it. His diagnosis was starter motor speed too low (150rpm). He used Start Ya Bastard to increase revs. At about 250rpm, the injector pump kicked in and pressurised the fuel rail, and it started fine. Still have a minor issue with pressure fluctuation, but runs fine now
Interesting - but I’ve reviewed the audio clips that I have from when the truck was start to when it’s not starting - the speed sounds identical. I can see how low speed could cause issues, but I don’t think that’s the root cause of my issues. 😎
I was expecting this result, but was still hoping it might be otherwise and that I was wrong with my original (very remote) diagnosis. As I said at the start this has all the hallmarks of an electrical failure as you had no rough running issues or (AFAIK?) low fuel rail pressure codes, just a sudden 'no start'. Try not to be too discouraged though because you've now massively decreased the likelihood of any future mechanical failures - particularly a cascading set of very expensive debris contamination failures. Do you have access to a pin-out readings list to check ECU/loom plug input and output voltages and grounds? This might be a good next step. It will tell you what inputs the ECU is getting from sensors, plus gives you an internal health check of the ECU.
Agree that it sniffs of electrical, except these things measure every sensor - and know when electrics are out even the slightest. If I unplug anything (open circuit) it throws a code, same if you short circuit a sensor. The only thing they don’t throw codes for that I know of, is loss of fuel…. But, nothing is proven yet!!! I’d love to find a broken wire that fixes this!!
@@BruceandKrista It's odd you don't get a code for low fuel rail pressure, IIRC the same year model here has a fuel rail pressure sensor. I would have thought Cdn and Aus spec would be pretty much identical - but there you go. You should have no trouble checking the loom wiring by earthing each wire and using a multi-meter, tedious though I know that is, but what concerns me is the engine ECU. That said, I've not heard of any confirmed examples of ECU failures. It could just be me, but it sounds to me via the internet that your engine cranking RPM is a bit sluggish. Did you check voltage at the ECU with the engine cranking?
@@BruceandKrista A very quick question for you. Does your 4P10 have the 'double ended' Bosch fuel rail? If so it should have a fuel pressure sensor on one end and a fuel pressure regulator on the other end? If there is no fuel pressure sensor on one end (I'll be a little surprised) there should still be a high pressure fuel pressure regulator on the other end?
It does have the pressure sensor, it’s just that there is no code or alarm for it, might just be while the truck isn’t running (kind of like an over-ride for low oil pressure alarm, doesn’t function until the engine is actually running)
@@BruceandKrista Thanks. Do you have access to any sort of factory diagnostic software? IIRC you had something, but it stopped working and the seller didn't respond or similar (or am I making that up?😳) I can't post photos or screen shots on here, unfortunately, but the factory software allows you to see what fuel pressure the ECU is 'asking for' vs what is being delivered. Is there someone you know who could plug into your diagnostic system and bring this up for you? The opposite end of the fuel rail to the sensor has an electronically controlled high-pressure regulator. I guess you could try taking the one off the 'spares' engine and see if fitting it makes any difference 🤷🏼♀
That's exactly what happened to my 4P10 when I was replaced with a recondition one. But it rans sort of. When I remove the fuel pressure valve to check metal inside pump and there's a little bits if metal in my pump. Before I remove that valve it rans .after I reinstall it and crank the engine but it's not starting. I bled the fuel system so many times but that not working. Again I remove the pump and reinstall a New Recondition pump and I only bleed to the injectors. The Surprise.is the is started like I just parked and re start . My 4P10 needs 4 new injectors But it's runs it not going above 80 kmph
I think my problem is going to turn out to be slightly different cause than yours, mine has not exhibited any signs of running… not even trying to fire.
Cant believe it after all of the variations of possible problems you have been through. I was sure it was going to start this time. You REALLY do deserve a break with this. I personally would have been totally lost a long way back so I have complete admiration for your knowledge and calmness through out this and have full faith that you will find the issue soon.
I thought that was it too! Eventually I’ll replace the right part! 🤣
My wife watched this with me and said “ we should look for a new truck with warranty”. Probably not a bad idea.
I just upgraded my Ender to a Bambu P1S. Wow! Can’t wait to print some advanced filaments.
New with warranty, or old enough to not have computers 🤣 - and have a proven track record! Ohhh, P1S should be fun!
Can't believe this after all that work. Like they say, If it weren't for bad luck you wouldn't have any luck at all.
Starting to feel that way!
Awshit. I was crossing all my appendages for ya, Bruce. Alright, make up a comprehensive list of what you've done and triplecheck it all. Show it to any diesel buffs or Fuso mechanics to see if they have anything to add. Can you send your fuel out to a testing lab, like the oil?
Prayers are sent (even though I don't do a whole lot of that.) You'll get it!
Not sure about testing diesel - but also don’t think it would go from good to not functioning in a few weeks time (?) I’ll be doing a summary troubleshoot coming soon!
DAMN!. I was rooting for you.👿
So was I 🤣
That cinch clamp fitting you removed looks like the same kind of crimp you use for Pex B cinch clamps. Ryobi makes a nice and reasonably priced crimper for those. Might be useful if you want to crimp them in narrow spaces. (Which is what I am going to be doing when I completely replace all the plumbing in my RV, since it's a pre-Pex type of plastic that fails early, and has already caused some leaks...)
For fuel lines I’ll keep using gear clamps - but plumbing on the inside will be PEX for sure.
Hey mate, I was following your progress as I had exactly the same symptoms. I got a bit impatient waiting for you though and went ahead to get a mechanic to look at it. His diagnosis was starter motor speed too low (150rpm). He used Start Ya Bastard to increase revs. At about 250rpm, the injector pump kicked in and pressurised the fuel rail, and it started fine. Still have a minor issue with pressure fluctuation, but runs fine now
Interesting - but I’ve reviewed the audio clips that I have from when the truck was start to when it’s not starting - the speed sounds identical. I can see how low speed could cause issues, but I don’t think that’s the root cause of my issues. 😎
Bruce you've done so much for fuso community it's time for the karma gods to give you a break,,,,
Please send them a note for me 🤣
I was expecting this result, but was still hoping it might be otherwise and that I was wrong with my original (very remote) diagnosis. As I said at the start this has all the hallmarks of an electrical failure as you had no rough running issues or (AFAIK?) low fuel rail pressure codes, just a sudden 'no start'. Try not to be too discouraged though because you've now massively decreased the likelihood of any future mechanical failures - particularly a cascading set of very expensive debris contamination failures.
Do you have access to a pin-out readings list to check ECU/loom plug input and output voltages and grounds? This might be a good next step. It will tell you what inputs the ECU is getting from sensors, plus gives you an internal health check of the ECU.
Agree that it sniffs of electrical, except these things measure every sensor - and know when electrics are out even the slightest. If I unplug anything (open circuit) it throws a code, same if you short circuit a sensor. The only thing they don’t throw codes for that I know of, is loss of fuel…. But, nothing is proven yet!!! I’d love to find a broken wire that fixes this!!
@@BruceandKrista It's odd you don't get a code for low fuel rail pressure, IIRC the same year model here has a fuel rail pressure sensor. I would have thought Cdn and Aus spec would be pretty much identical - but there you go. You should have no trouble checking the loom wiring by earthing each wire and using a multi-meter, tedious though I know that is, but what concerns me is the engine ECU. That said, I've not heard of any confirmed examples of ECU failures. It could just be me, but it sounds to me via the internet that your engine cranking RPM is a bit sluggish. Did you check voltage at the ECU with the engine cranking?
@@BruceandKrista A very quick question for you. Does your 4P10 have the 'double ended' Bosch fuel rail? If so it should have a fuel pressure sensor on one end and a fuel pressure regulator on the other end? If there is no fuel pressure sensor on one end (I'll be a little surprised) there should still be a high pressure fuel pressure regulator on the other end?
It does have the pressure sensor, it’s just that there is no code or alarm for it, might just be while the truck isn’t running (kind of like an over-ride for low oil pressure alarm, doesn’t function until the engine is actually running)
@@BruceandKrista Thanks. Do you have access to any sort of factory diagnostic software? IIRC you had something, but it stopped working and the seller didn't respond or similar (or am I making that up?😳) I can't post photos or screen shots on here, unfortunately, but the factory software allows you to see what fuel pressure the ECU is 'asking for' vs what is being delivered. Is there someone you know who could plug into your diagnostic system and bring this up for you? The opposite end of the fuel rail to the sensor has an electronically controlled high-pressure regulator. I guess you could try taking the one off the 'spares' engine and see if fitting it makes any difference 🤷🏼♀
That's exactly what happened to my 4P10 when I was replaced with a recondition one. But it rans sort of. When I remove the fuel pressure valve to check metal inside pump and there's a little bits if metal in my pump. Before I remove that valve it rans .after I reinstall it and crank the engine but it's not starting. I bled the fuel system so many times but that not working. Again I remove the pump and reinstall a New Recondition pump and I only bleed to the injectors. The Surprise.is the is started like I just parked and re start .
My 4P10 needs 4 new injectors
But it's runs it not going above 80 kmph
I think my problem is going to turn out to be slightly different cause than yours, mine has not exhibited any signs of running… not even trying to fire.
😢
All in time…. Luckily I have lots of it!!
That is very frustrating. I rang my wife and requested that she bring me home a hair puller from town.
Can you have her bring a truck fixer too? 🤣
@@BruceandKrista Sorry she misunderstood my request and came back with a pair of thongs. Don't suppose they would help much.
Assuming you’re talking about the footwear, not really at this time of year, it’s starting to get cold!
@@BruceandKrista Of course... do you think she would be getting me a pair of those things with the elastic and the tongue!
Did start yet /
No, not yet
.
.