Blackhawk
Member
Hello guys,
I have a 2013 4.7 that recently started to tick so loud, it sounded like a borderline knock.
It seemed to have happen overnight, i drove the truck one night, she didn’t have any issues, and then I go to fire her up the next day, and all the sudden it’s ticking so loud it’s knocking. It’s ticked since it was new, but the sound always went away when it got warm.
I have done several things to try and diagnose the problem, all with interesting results:
1.) Removed drivers and passenger rocker covers, all lifters OK, all rockers OK, noise slightly changed when cranking in flood mode with all drivers lifters/rockers removed. It went from being a solid tick to 2 ticks that weren’t as solid. Something to note here is even with it just cranking in flood mode, it had solid oil pressure with just 4-5 revolutions.
2.) Took timing chain cover off, all chains are OK, guides are OK, tensioners are OK, no slack in anything.
3.) Dropped oil pan, no movement in rod bearings, some “metal” in the pan from Engine Restore. Can’t tell anything about mains as it’s a bedplate. From what i could see, no cylinder wear/piston skirt damage in any of the visible cylinder bores.
4.) Engine compression seems to be OK from what ive seen reading on other posts (130-150PSI) and that’s with the engine cold after sitting for a month.
5.) Noise seems to be half the speed of the crank.
6.) After buttoning up the truck as much as i can, and running it with distilled water as coolant, the ticking would slightly quiet down compared to when it was cold. I also noticed that, when cranking in flood mode, the ticking would go away when the engine was warm, and come back when it was cold.
7.) After this, and driving it for around 4 miles on the highway, when letting your foot off the gas, the sound would completely go away and then come back when you put your foot back onto the gas.
8.) When cranking the engine when it’s warm, it seems to spin over faster, and sound like it’s low on compression across the board on ALL cylinders.
Lastly, when listening to the engine with a mechanics stethoscope, the noise is 100% louder on the drivers side bank with the loudest part being the exhaust manifold. After checking the rest of the engine while it’s running with the stethoscope, it’s also coming from the back of the engine, not the front.
Any help? I will attach a video later today.
I have a 2013 4.7 that recently started to tick so loud, it sounded like a borderline knock.
It seemed to have happen overnight, i drove the truck one night, she didn’t have any issues, and then I go to fire her up the next day, and all the sudden it’s ticking so loud it’s knocking. It’s ticked since it was new, but the sound always went away when it got warm.
I have done several things to try and diagnose the problem, all with interesting results:
1.) Removed drivers and passenger rocker covers, all lifters OK, all rockers OK, noise slightly changed when cranking in flood mode with all drivers lifters/rockers removed. It went from being a solid tick to 2 ticks that weren’t as solid. Something to note here is even with it just cranking in flood mode, it had solid oil pressure with just 4-5 revolutions.
2.) Took timing chain cover off, all chains are OK, guides are OK, tensioners are OK, no slack in anything.
3.) Dropped oil pan, no movement in rod bearings, some “metal” in the pan from Engine Restore. Can’t tell anything about mains as it’s a bedplate. From what i could see, no cylinder wear/piston skirt damage in any of the visible cylinder bores.
4.) Engine compression seems to be OK from what ive seen reading on other posts (130-150PSI) and that’s with the engine cold after sitting for a month.
5.) Noise seems to be half the speed of the crank.
6.) After buttoning up the truck as much as i can, and running it with distilled water as coolant, the ticking would slightly quiet down compared to when it was cold. I also noticed that, when cranking in flood mode, the ticking would go away when the engine was warm, and come back when it was cold.
7.) After this, and driving it for around 4 miles on the highway, when letting your foot off the gas, the sound would completely go away and then come back when you put your foot back onto the gas.
8.) When cranking the engine when it’s warm, it seems to spin over faster, and sound like it’s low on compression across the board on ALL cylinders.
Lastly, when listening to the engine with a mechanics stethoscope, the noise is 100% louder on the drivers side bank with the loudest part being the exhaust manifold. After checking the rest of the engine while it’s running with the stethoscope, it’s also coming from the back of the engine, not the front.
Any help? I will attach a video later today.
