Just did dummy plugs and stand pipes on both sides on 6.0L F550 dump truck last year. 6.0L is a great engine overall, when it runs but unfortunately 6.0L has so many failure points when they age. Let my go. Not looking for another one anymore. To me just by listening, while you we cranking the engine over to prime new fuel injectors, it did not sound consistent. Sounded up and down at some point indicating low compression in one or few cylinders. I also will do cylinder contribution test and power balance test as well. Especially, on 6.0 always use OEM FoMoCo parts. Btw, great video! Keep good content up!
when you installed the injectors did you use grease or Vaseline around the orings before you stuck them in? i did injectors on mine and it was making the same noise of compression miss and wouldnt start. another thing you can check is the bubble test. where you remove the fuel filter cap and spin the engine over and check for bubbles. if theres bubbles your injectors arent seated properly or you have a bad injector(s)
Yes, I lubed the orings however always a possibility. The symptoms were the same before and after the injectors were swapped. I haven’t done the bubble test but I will give it a shot… can’t hurt but I’m pretty sure the engine is dusted unfortunately
Do a relative compression test, this will tell you if it’s a cylinder sealing issue, I heard it in the cranking cadence early in the vid. if it’s a valve pull that head and have repaired. Also would have been nice to see the power balance. Icp was over 1000. If it ain’t lighting off ipr % will be at or near 85%. I saw coal out the pipe so it was getting fuel. Charge or replace those batteries and have fun.
Hold on pump the brakes. You need to check FUEL PRESSURE. You trying to start it, you could hear it didn’t have adequate fuel pressure. Lack of fuel pressure will cause cylinder contribution faults, smoke out of tail pipe, smoke out of CCV ETC… 100% need to check fuel pressure first before condemning the engine
Good catch! That is something that has not been checked yet but is on my list. I wouldn’t be surprised if it’s low, but I do have a FASS lift pump from my parts truck to go on it. On another note, Where you been at man? I haven’t seen anything recently
@@bmic_122 I would also say that the exhaust was pretty loaded up from cranking on it so much which made the smoke look even more excessive. When you first started it sounded like the fuel system was air locked. Listen for the fuel pump to come on, and listen for it to “prime”, sometimes this takes 4-5 cycles of the key until you hear the pump turn off. Later when you got to attempt 10 you could hear you weren’t getting sync and the injectors weren’t firing due to the weak batteries and not cranking over fast enough. Some things to consider! Hunting season for the last 3 months haha I’ve got some content coming out in the next couple weeks. 💪
Just did dummy plugs and stand pipes on both sides on 6.0L F550 dump truck last year. 6.0L is a great engine overall, when it runs but unfortunately 6.0L has so many failure points when they age. Let my go. Not looking for another one anymore.
To me just by listening, while you we cranking the engine over to prime new fuel injectors, it did not sound consistent. Sounded up and down at some point indicating low compression in one or few cylinders.
I also will do cylinder contribution test and power balance test as well. Especially, on 6.0 always use OEM FoMoCo parts.
Btw, great video! Keep good content up!
Yeah a compression test is next on my list! I love 6.0’s but I think I have a problem lol. This is my 5th one
when you installed the injectors did you use grease or Vaseline around the orings before you stuck them in? i did injectors on mine and it was making the same noise of compression miss and wouldnt start. another thing you can check is the bubble test. where you remove the fuel filter cap and spin the engine over and check for bubbles. if theres bubbles your injectors arent seated properly or you have a bad injector(s)
Yes, I lubed the orings however always a possibility. The symptoms were the same before and after the injectors were swapped. I haven’t done the bubble test but I will give it a shot… can’t hurt but I’m pretty sure the engine is dusted unfortunately
Do a relative compression test, this will tell you if it’s a cylinder sealing issue, I heard it in the cranking cadence early in the vid. if it’s a valve pull that head and have repaired. Also would have been nice to see the power balance. Icp was over 1000. If it ain’t lighting off ipr % will be at or near 85%. I saw coal out the pipe so it was getting fuel. Charge or replace those batteries and have fun.
Yeah that’s my next step. A power balance will for sure be helpful. I appreciate the info!
Hold on pump the brakes. You need to check FUEL PRESSURE.
You trying to start it, you could hear it didn’t have adequate fuel pressure. Lack of fuel pressure will cause cylinder contribution faults, smoke out of tail pipe, smoke out of CCV ETC… 100% need to check fuel pressure first before condemning the engine
Good catch! That is something that has not been checked yet but is on my list. I wouldn’t be surprised if it’s low, but I do have a FASS lift pump from my parts truck to go on it. On another note, Where you been at man? I haven’t seen anything recently
@@bmic_122 I would also say that the exhaust was pretty loaded up from cranking on it so much which made the smoke look even more excessive.
When you first started it sounded like the fuel system was air locked. Listen for the fuel pump to come on, and listen for it to “prime”, sometimes this takes 4-5 cycles of the key until you hear the pump turn off.
Later when you got to attempt 10 you could hear you weren’t getting sync and the injectors weren’t firing due to the weak batteries and not cranking over fast enough.
Some things to consider!
Hunting season for the last 3 months haha I’ve got some content coming out in the next couple weeks. 💪
@@LeftLaneDiesels Great info, Thanks man! Yeah looking forward to more content!! Thanks for watching mine lol
I need some 6.0 parts 2004
It’s down a cylinder, plain as day when it’s cranking does not sound smooth at all. It’s coughing