Jinma 354 no high range power

[ericsloan]

I have 354e and the tractor ran away with me thought it was going to blow up but did not find came down. I replaced all top end gaskets last winter. Now I have low range speed good power but high range will run 2nd grea but 3rd starts to bog down and dies in 4th. New filters. Have not touched the high pressure pump thought trash could be in pump but don't know how to start.

 

[piper184]

What was the cause of the runaway and what did you do to fix it?
Bogging down is usually caused by restricted fuel or air flow. Injection timing might be a factor but not as likely.
Did you check the air filter to see if it has collapsed? Also the air intake hose could have de laminated internally and is restricting air flow.
When it bogs down is it smoking excessively? If so, what color is the smoke?

 

[ericsloan]

When it ran away did nothing was afraid it would blow up it came down on its I own. Air filter and hose new. Black smoke when it bogs down

 

[Bob Rooks]

Possibly a sticking rack and the governor has difficulty overcoming it. Also black smoke when lugging denotes either intake air or fuel/timing issues. As Piper has suggested, check air filter and air filter hoses. Fuel delivery seems adequate so there could be injectors dribbling (should be pop tested) or timing could be too early due (unlikely) to broken governor flyweights caused by the overspeed. Had you performed any work on the fuel injection pump? What is the oil level in the injection pump?

 

[piper184]

The black smoke indicates it is running rich which means there is no shortage of fuel in the cylinder.
That leaves a shortage of air or improper injector timing.
The easiest to test is air. I would remove the intake hose from the intake manifold and run it briefly to see if the problem clears up. Do this in as clean of conditions as you can as there will be no air filtration but if only run briefly won't do any harm.

BTW: When you have a runaway the best thing to do is cut off the air as quickly as possible. A rag over the intake port of the air cleaner housing is usually enough. I know diesel mechanics that keep a small square of cardboard or plywood handy when they have installed a new (or rebuilt) engine or are working on the fuel system. They don't have the air cleaner connected or have a way to easily reach the intake port. Ready at an instant to slap the board on the intake if it should ever over-rev.

Since this has not happened since, it just occurred to me that it might have been a stuck governor issue, but I don't know enough about that to part of the system. I also don't know if a governor could be the cause of the bogging down. Hopefully someone else will chime in on that.

Bob Rooks are you watching this one?

 

[piper184]

Hi Bob!

We must have been typing at the same time!

 

[Bob Rooks]

Hi Bob!

We must have been typing at the same time!

Hahahaha!

 

[Bob Rooks]

The black smoke indicates it is running rich which means there is no shortage of fuel in the cylinder.
That leaves a shortage of air or improper injector timing.
The easiest to test is air. I would remove the intake hose from the intake manifold and run it briefly to see if the problem clears up. Do this in as clean of conditions as you can as there will be no air filtration but if only run briefly won't do any harm.

BTW: When you have a runaway the best thing to do is cut off the air as quickly as possible. A rag over the intake port of the air cleaner housing is usually enough. I know diesel mechanics that keep a small square of cardboard or plywood handy when they have installed a new (or rebuilt) engine or are working on the fuel system. They don't have the air cleaner connected or have a way to easily reach the intake port. Ready at an instant to slap the board on the intake if it should ever over-rev. I have 6" and 8" round pieces of 1/2" plywood with handles that I use. The danger of using a rag is that it could be sucked in.
Since this has not happened since, it just occurred to me that it might have been a stuck governor issue, but I don't know enough about that to part of the system. I also don't know if a governor could be the cause of the bogging down. Hopefully someone else will chime in on that.

Bob Rooks are you watching this one?

Yes.

 

[ericsloan]

When it ran away did nothing was afraid it would blow up it came down on its I own. Air filter and hose new. Black smoke when it bogs down

Have not done anything to pump

 

[piper184]

At the very least I would recommend changing the oil in the injection pump. Engine oil is just fine.