oh but the internals of the pump exploded and pushed the plugs out it sounds like a bucket of change when you shake it lol
Cp3 exploded!
- Thread starter JustinD
- Start date
Ok????? I was thinking more of what made it fail, and how to TRY to prevent it. Lack of lubrication??? Should I be running 2 stroke oil or some additive??
I have heard of excessive muffler bearing resonance causing fuel pressure fluctuations and the dreaded youcouldnthavedoneanything to prevent it problem!:hug:
I have also changed one in an LB7 that had the same thing happen, but to a lesser degree. The truck was actually still running! It was leaking fuel like an SOB, but I drove it in the shop. I was shocked (and confused on how it could still run) when I got down to the pump. I posted pictures in a thread on here somewhere.
Wow! It still ran! I had no such luck, atleast they sent another Duramax to tow me back to the shop and not a Powerstroke!!! Good to hear that it has happened before..........and its not just me.
The cp3 on my dual fueler blow one of the plugs out of it before. Made a loud pop and started spraying fuel everywhere
That's why you need dual fuelers... 
Seriously, we had one blow up at El Mirage at 150+mph. Luckily diesel doesn't ignite easy.
Seriously, we had one blow up at El Mirage at 150+mph. Luckily diesel doesn't ignite easy.
Well I changed the fuel filter yesterday, and it was full of CP3!!! shiny stuff floating in it!!
The copper is from the thrust bearings on the crank. The crank is a short stroke unit that is surrounded by a floating triangle. On each of the three cylinders is cup which rides on a side of the triangle, a spring inside to keep the cup on the crank, and a piston (which looks like a valve, the "stem" is the piston, and the head is the "rod").
When the pressure regulator restricts the fuel to the cylinders, they can't travel all the way down to the crank. This is what controls the output, fuel starvation to the cylinders reduces the stroke of their pistons, pumping less fuel.
Those 3 freeze plugs are so they can machine the cup/cylinder bores. When the triangle is allowed to rotate out of position (normally by a cup stuck up in it's bore), the next revolution crams the vertex of the triangle up into a cup. Somthing has to give. BANG, shit busts off, and the freeze plugs push out by debris wedged in between the triangle and the case.
I've lost two pumps, and had the injectors tested afterwards. No problems. But certainly clean the rails throughly.
The reason the debris doesn't go out of the pump and into the rails, is because the high pressure side is somewhat isolated by small passages and is feed by gerotor pump from the tank, not the crankcase fluid which is for lubrication and is not pumped into the high pressure side.
When the pressure regulator restricts the fuel to the cylinders, they can't travel all the way down to the crank. This is what controls the output, fuel starvation to the cylinders reduces the stroke of their pistons, pumping less fuel.
Those 3 freeze plugs are so they can machine the cup/cylinder bores. When the triangle is allowed to rotate out of position (normally by a cup stuck up in it's bore), the next revolution crams the vertex of the triangle up into a cup. Somthing has to give. BANG, shit busts off, and the freeze plugs push out by debris wedged in between the triangle and the case.
I've lost two pumps, and had the injectors tested afterwards. No problems. But certainly clean the rails throughly.
The reason the debris doesn't go out of the pump and into the rails, is because the high pressure side is somewhat isolated by small passages and is feed by gerotor pump from the tank, not the crankcase fluid which is for lubrication and is not pumped into the high pressure side.