I guess its time-
Well my beloved 2011 GMC had the high pressure fuel pump grenade sending metal into the injectors... A very expensive repair for a truck with 110k miles on it. I had really wanted to wait another y...
Forum Discussion
Go back to root cause
#1 is that the crank (cam), connecting rod and piston are NOT connected with a
positive fastening system. Think if your ICE with the crank and connection rod
cap removed/not there. That the connecting rod to piston has no wrist pin.
All held together with just a spring keeping it there in a static condition. On
a dynamic condition...they fly apart and bang together
#2 Used Diesel as the lube for the above. The pressures are insane...to attain
approx 29,000 PSI the crank/cam, rod and piston are subjected to a min of that
level. The PSI on the rod ends must be even higher, as think it is less than
1 inch square
Depending on that small amount of sulfur, etc is not well thought out and why
they went with the band-aid DLC coating...which is one of the best non-stick
surfaces known to mankind.
So the lube, diesel, must have superior film tensile properties and it does NOT
In this, is that the lube gets debris from the above and contributes to this
fray...then is sent to the injectors without filtration. That then gets worse
and worse over time.
Now toss in contaminants. Like H2O, rust, etc as these parts are NOT corrosion
resistant, nor plated to protect
On the injectors...the Pizo chips are stacked in series to get the stroke to
turn on the injectors. 'Chips' and that they see and push against this 29,000 PSI
fluid. How many times a cycle? How many cycles per mile?
Okay, not directly against that 29K PSI...IIRC...the last time looked at the
schematic, it is what I'd call an over center type of arrangement, but still,
'chips' (AKA silicone) in this is nothing I'd design, but guess they couldn't
find anything else...
Personally, if I pay the kind of money for this kind of machine...I expect it
to last decades...
#1 is that the crank (cam), connecting rod and piston are NOT connected with a
positive fastening system. Think if your ICE with the crank and connection rod
cap removed/not there. That the connecting rod to piston has no wrist pin.
All held together with just a spring keeping it there in a static condition. On
a dynamic condition...they fly apart and bang together
#2 Used Diesel as the lube for the above. The pressures are insane...to attain
approx 29,000 PSI the crank/cam, rod and piston are subjected to a min of that
level. The PSI on the rod ends must be even higher, as think it is less than
1 inch square
Depending on that small amount of sulfur, etc is not well thought out and why
they went with the band-aid DLC coating...which is one of the best non-stick
surfaces known to mankind.
So the lube, diesel, must have superior film tensile properties and it does NOT
In this, is that the lube gets debris from the above and contributes to this
fray...then is sent to the injectors without filtration. That then gets worse
and worse over time.
Now toss in contaminants. Like H2O, rust, etc as these parts are NOT corrosion
resistant, nor plated to protect
On the injectors...the Pizo chips are stacked in series to get the stroke to
turn on the injectors. 'Chips' and that they see and push against this 29,000 PSI
fluid. How many times a cycle? How many cycles per mile?
Okay, not directly against that 29K PSI...IIRC...the last time looked at the
schematic, it is what I'd call an over center type of arrangement, but still,
'chips' (AKA silicone) in this is nothing I'd design, but guess they couldn't
find anything else...
Personally, if I pay the kind of money for this kind of machine...I expect it
to last decades...
