1963 John Deere 4010 clatter

Had the tractor regularly serviced since purchased. Notice the tractor sounded like it was missing and found the old
injector pump was leaking so I had it rebuilt twice a year ago. After the first rebuild I started the tractor and it ran
(idled) for a couple minutes before noticing an issue. The technician did not put shaft seal in right and diesel dumped
into the oil pan. Had the injector rebuilt again by professional service the second time using metal parts instead of
standard plastic. Still had missing issue so I had the injectors rebuilt this past fall. Now it smokes (white/blue) and
clatters when throttling up or governor kicks in. Power seems sluggish when under load.

Follow up:
The injector is an updated on Stanadyne Roosa pump that appears to be for a 4020.
The previous owner said the tractor was one of the last 4010 tractors manufactured and a 4020 engine was factory
installed.
I have been unable to verify even by going through John Deere.
The only thing I do know is the timing is set at top dead center "0" and not 14 degrees before like a typical 4010.
The first pump rebuild was by a technician my local John Deere dealer recommended. When I reinstalled the pump and
started it and let it idle, the oil light came on and I shut it down immediately smelt diesel on the dipstick and drained
the oil pan to find diesel had dumped from the injector. I decided to bite the bullet and had both the pump checked out
and repaired by Thompson's Diesel in Oklahoma City which was not cheap. I also had them to rebuild the injectors last
fall. I put everything together as per shop manual and bled the lines once started. I bled them again checking to make
sure all cylinders were firing but still have a clatter upon starting out or when governor kicks in.

I've got serial number 56521 which is towards the end of production and the engine was true 4010 until we put a 4020 sleeve kit in it. I've seen serial number 57056 and it had a 4010 block number. I've got my doubts on this claim but maybe a 4020 engine was stuck in as part of a warranty claim back in the 1960's. Most likely if a true 4020 engine then it was stuck in somewhere along the way and if the tractor had several owners then it is impossible to verify a claim like that without paperwork to prove it.

The timing is not tdc on 4010's. The original pumps didn't have an advance in them but the upgraded pump does. I don't remember for sure what the correct timing is but the pump rebuilder should have sent a tag with the correct timing. I think it's 6 or 8 degrees advanced.

I would bet that your still out of time on the injection pump., It does not take much. Your going to have to talk to who rebuilt your pump. They need to tell you what governor ring they put in the pump. ( The metal time they installed) They should be able to tell you how you should time the pump as they set it up. The clatter when increasing speed is a sure sign of a timing issue.

Also have you checked the valve adjustment??? If one of them is tight it will cause a miss. Have you check the compression??? These motors are getting over 50 years old. A simple overhaul does not repair/insure that everything is back to snuff. Valve seat ground too deep or worn valve guides and etc can all cause your smoke issue.

As for what you spent on the injection pump. There are two cup seals on the pump drive shaft that can easily be flipped when installing them. All you would have need to do was tell the original guy. I bet he would have gladly have replace them. They cost about a $1 each. I have installed hundreds of them and even have the tool to help do them, but I still some times get one to fold when being installed.

Easy way to tell if true 4020 engine is if it has 4 bolts in the front of the engine to support it. A 4010 has only 2. I to doubt ant 4010's left the factory with 4020 engines except experimental ones. Tom

Thanks,
I will check the front mounting bolts.

I took the injector back TWICE to the original technician who rebuilt the pump the first time and still had diesel dump into the oil pan. The second time I got the pump back from the technician, I kept it from starting, bled the lines and checked the oil. Again it dumped diesel into the tank. That is when I decided to go to Thompson Diesel.
I changed the oil and filter each time this happened and again after Thompson Diesel rebuilt the pump just in case there was any diesel residue.
Checked valve adjustment while waiting on the injector rebuild.
Figure the main issue of clattering is timing since the tractor sounded fine before I started messing with the injection system.
Neither the technician nor Thompson Diesel provided any new timing instructions.