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Something has caused the plunger to stick the first time before the button fell off. I posted a pic of the plunger and a dark coating from ether bad fuel or water and the fuel control collar was sticking pretty good on it. What ever the cause it seems to happen more and more often. I have trucks...

Think they fall off when we are asleep and the gremlins are awake.

No the plunger never leaves contact with the tappet. The only way to check that a fuel control is sticking is to remove the shut down cover and check for free movement of the control. If it means anything to you when the cam lobe is up and the plunger is on it's injection stroke would be the...

Just to be correct the thread above post 32 line #2. When the control collar is up it holds the spill port closed longer and we get high RPM. When the control collar is down the spill port is open longer and all the fuel spills out and we get a no fuel or shut down.

You can tell when a truck likes you it does not give you any problems. Are you guys talking nice to them once and a while.

Yea you never know who what and if correct. I would still bet when it came to doing that deep of work it was someone that knew injection pumps. Was also put on the machine and spun up for testing. I am still finding fuel canisters not put together in the correct order.

http://www.mycleandiesel.com/pages/ProblemWater.aspx Maybe you Diesel was not as clean as you think.

I don't think people have been changing out there springs and tappets. If you did replace your head and took out a 90100A then put back in a 90100A then it should be correct. Here is the pic of the plunger and the discoloration. My collar even has problems sliding where it is. Think the crap...

I don't know Rusty but I do have a plunger that has a coating on it. I will grab it today and take a pic. I believe this coating makes the plunger stick and then causes a gap between the tappet and plunger. Then when it unsticks the two slam together maybe causing a hammering affect that knocks...