John Deere 430 20H yanmar 1986

Parts...probly

Your symptom of fast cranking sounds bad.

I'm leaning towards timing chain and not even sure if it has one...likely yes.

Otherwise......bent/burnt valve..hole in piston...tossed all the rods...idk

Any external leaks ....oil or water..??

Does this model by Chance have a compression release..??

Some tractors of this vintage did.

How do you kill /turn off this tractor when its working properly??

you may be in luck.......doubtful but a maybe.

Have a kubota with this set up and a hose got hung up in the compression release cable/linkage one time.

theduke said:

Parts...probly

Your symptom of fast cranking sounds bad.

I'm leaning towards timing chain and not even sure if it has one...likely yes.

Otherwise......bent/burnt valve..hole in piston...tossed all the rods...idk

Any external leaks ....oil or water..??

Click to expand...

None whatso ever

Doe you hear the fuel pump? Is the fuel solenoid moving when key turned on? Do a fuel bleed on the fuel/water filter to check for fuel. Crack injectors to check for fuel. Finally do a compression test (you have to remove each injector, one at a time). Follow instructions in the tech manuals TM1591 and CTM3 to do it safely. Report back on the fuel checks first.

Pretty much all the parts are available, but you description of the problem doesn’t help much if any.

I would not dig into the motor or the high pressure fuel side until you troubleshoot the low pressure side.

Fuel filter
Electric pump
Solenoid

At that point I’d go to the high pressure side, not the engine.

A scattered attack is going to do nothing except confuse things if no problem is found, until it runs again there’s a real risk that something that was fine becomes a second simultaneous problem.

ret said:

No smoke

Click to expand...

farmer52 said:

Do you hear a click when you turn the key to the run position? Is there any smoke when cranking?

Click to expand...

Ok, he does hear a click when trying to start it. He did say this morning that there was just a little bit of smoke but not much.

ret said:

S#MOO430x360963, Today while tilling the tractor died, If you try to restart, it turns over fast. It will not restart. We had to leave the tiller in the garden and pull the tractor to the garage with the other tractor. Does anyone have any idea what could be the problem, and if so can the part even be got anymore? Appreciate any help. Thanks so much

Click to expand...

Fast as in faster than normal, OR fast as in the way it usually does?

bloodrunsgreen said:

Doe you hear the fuel pump? Is the fuel solenoid moving when key turned on? Do a fuel bleed on the fuel/water filter to check for fuel. Crack injectors to check for fuel. Finally do a compression test (you have to remove each injector, one at a time). Follow instructions in the tech manuals TM1591 and CTM3 to do it safely. Report back on the fuel checks first.

Click to expand...

We do hear the fuel pump and I don't have a tech manual of TM 1591

joecdeere said:

We do hear the fuel pump and I don't have a tech manual of TM 1591

???????
RET, did you not get the manuals I sent?

Click to expand...

No hon I did not get anything from you.

ret, Unsure if you know about "Conversations", but they're private conversations between people and not visible in the Forums. Click your avatar... the blueish square with an R in it on the upper right of this page... and a drop down menu will appear. Scroll down to "Conversations", click and you'll find "Manuals". Open & follow directions! Bob

rwmeyer said:

ret, Unsure if you know about "Conversations", but they're private conversations between people and not visible in the Forums. Click your avatar... the blueish square with an R in it on the upper right of this page... and a drop down menu will appear. Scroll down to "Conversations", click and you'll find "Manuals". Open & follow directions! Bob

Click to expand...

Well folks the tractor is fixed, and it was the fuel transfer pump. Back running good as ever.

joecdeere said:

I have PDF's of both tractor and engine Tech manuals for the 430, if wanted, message me your email and their on the way

Joe

Click to expand...

Would you by any chance have the tech manual for the rear pto? It wasn't on when the tractor was bought. My father had john deere to add this part. We believe out rear clutch is out. But need help with manual if possible, thanks ?.