Jd 644 a needs a little sniff

[lenray]

This tractor has what is called a DIESEL STARTING FLUID ADAPTER-----You remove the squirt nozzle and push the can up into the adapter and push the can up while rolling the engine--injecting either into the tractor.

I don't like using ether but this tractor-loader needs a sniff to start even after being plugged in to heat the water. Not sure how warm the water is getting....loader is probably a 1972.

Just looking for some thoughts from the brain trust here--thank you len

 

[still learn'n]

Is the starter in good working order and also the batteries and charging system? sometimes the starter is weak or the voltage is low and it don't turn over fast enough. Just a thought.

 

[Delmer]

One or the other should be enough to start it. Is the block heater working and how many watts is it?

Compression and fuel are all there is. If it doesn't have too much blowby, the valves are adjusted, and the engine turns over decent, then you have compression. Have you checked the injectors and timing? How does it start warm after running? or sitting overnight in the summer? at 50?

 

[Jonas302]

So whats wrong with giving it a sniff? Feel the head after being plugged in overnight to make sure the block heater works

 

[Wes J]

A little ether is not the end of the world. As long as the injectors are firing, the cylinders are being lubricated. As long as the engine is turning while the ether is injected, there is no risk of violent explosions. Plenty of diesel engines were factory equipped with ether injection and designed to use it.

 

[lenray]

Delmer just got the ole heifer. Fires right up after the first start. Has a not factory starter--thinking it is called a DENSO--will have to look at that again..........

 

[lenray]

Is the starter in good working order and also the batteries and charging system? sometimes the starter is weak or the voltage is low and it don't turn over fast enough. Just a thought.

I am going to check the batteries clean posts etc. might be a little slow on the revolutions...............thanks

 

[lantraxco]

Denso is better, the Deeres of that vintage all came with Delco and all had starting issues.

It will be down on compression but the biggest issue is the Roosamaster pump and the injectors. When the pumps get worn they won't build enough pressure to pop the injectors open properly until it's spinning pretty good, usually just a bit faster than the starter can do.

Outfit I wrenched for had a small herd of Deeres back in the late 80's, none of them started well below freezing, EXCEPT the 690B... wondered why, took a look, guess what? Bosch inline injection pump. That ugly duckling loved fuel, but it would run forever if you filled it with oil and checked the fuel. Yes I said that right, LOL