How to start a JD300B now that ether port does not work

Add a block heater. Or; 'they' sell these magnetic heaters that you can stick on the bottom of the engine to warm it up.

With this new ethanol gas out now, folks may have to use ether again in cold weather. Good luck finding the air intake.

It only does it in bad wet weather check distributor cap it probably cracked

Reason 1 - Gasoline, like any other liquid, evaporates less when it is cold.You have seen this -- if you pour water onto a hot sidewalk it will evaporate a lot faster than it will from a cooler place like a shady sidewalk. When it gets really cold, gasoline evaporates slowly so it is harder to burn it (the gasoline must be vaporized to burn). Sometimes you will see people spray ether into their engines in cold weather to help them start -- ether evaporates better than gasoline in cold weather.

Reason 2 - Oil gets a lot thicker in cold weather. You probably know that cold pancake syrup or honey from the refrigator is a lot thicker than hot syrup or honey. Oil does the same thing. So when you try to start a cold engine, the engine has to push around the cold, gooey oil and that makes it harder for the engine to spin. In really cold places people must use synthetic motor oils because these oils stay liquid in cold temperatures.

Re ason 3 - Batteries have problems in cold weather, too. A battery is a can full of chemicals that produce electrons The chemical reactions inside of batteries take place more slowly when the battery is cold, so the battery produces fewer electrons. The starter motor therefore has less energy to work with when it tries to start the engine, and this causes the engine to crank slowly.

All three of these problems can make it impossible to start an engine in really cold weather. People either keep their cars in heated garages or use "block heaters" to get around these problems. A block heater is a little electric heater that you plug into the wall to keep the engine warm.
i hope it was convince answers

Battery condition? I used to "cycle" the glow system two or three times before cranking. In other words when glow finishes, turn key off then start the glow cycle again. Get a crankcase or block heater. To warm up or "keep" warm. Glow almost never fails.
But it's possible the Glow timer or connections are going.
There are "Cetane" improvers that may improve cold starting. Quality of fuel you are getting? Last time Filter was changed? Really cold? and stuck. Only for emergency, not recommended. Ether cold start spray can. Spray into the air intake. You may need to open Air filter passage to spray. I knew a farmer who had an automatic ether system. Blue up the engine from over speed. So that is why you need to be careful!

Grab you a can of ether, spray some quick shots. You may just have a faulty choke. If that doesn't start it up, I'd look towards the fuel pump as being faulty.

You will probably need some Ether based starting fluid. You may have to remove air filter to shoot a 2 second blast into the intake - but first try shooting the air intake with the 2 second blast and start vehicle. Diesel fuel tends to thicken in cold weather and a fuel additive like Lowes diesel fuel treatment may help keep your fuel fluid in colder weather. In cold weather, like on a night of clear skies causing low temperatures, a block engine heater will help to keep your fuel fluid - along with the diesel treatment. Block heaters are not too difficult to install depending on your vehicles configuration and how much room you have at a freeze plug, and are well worth the cost.
Hope this helps and please rate my solution!!

can't say for sure but almost all engines that have come to me needing ether to cold start have poor compression. test the compression first.
you sould never need to use ether on a gas engine and very carefully on a diesel when very cold.

When it is cold, gasoline evaporates less and this cause it to be more difficult to burn due to the fact that it is burnt when it is evaporated,
in order to overcome the lack of gasoline evaporation problem, you can spray ether into the engine which would evaporate quickly and help the engine start. Besides this, you can also to prevent having oil too thick which wouldn't circulate properly by using thin synthetic oils. You should also try to maintain the car isolated from cold as much as possible, but by using the two last mentioned methods you would experience much less problems at the time of staring the car in cold weather.

your glow plugs not working or glow plug relay or controller not working.