YM1700 won't start

284 International · Jan 27, 2012

Make sure there is fuel in the tank, and the cap is venting, fuel filter isn't plugged, etc. The final blessed on the pump should flow a stream the size of the bleeder bolt if it is removed. In other words, it makes a real mess when you do it! :laughing:

If there isn't enough flow, or if bubbles are giving the pump an embolism, you won't get enough fuel for it to smoke.

careyo63 · Jan 27, 2012

I would start from scratch. Drain all the fuel in the Tank. Clean the Fuel Filter Bowl and replace the Filter with new one. Make sure the O-Ring around the Filter Bowl is Good,Correct size Etc. I believe you can get one Local at a auto Parts store this just came up with a "Purolater" part#'s Fuel/Oil. Me Clemsonfor and Smoody just Discussed it. Replace the Fuel with some new Diesel so you can rule that out. Bleed the Lines with on the Inj.Pump and Filter. I would do it Multiple times to make sure you Bleed All the Air Out. There's a U-Tube Video to show you what and what not to do.

I Grew up in Hamilton Co. and Own a Ym2000 basicly the same Tractor. IMO 50degs. you shouldn't need the TS.
If all fails Your need to remove and inspect the Injectors. If there clean your need to Run a Compression Check. Which If it was mine I would do just to Know the Comp. of the Cyl. and know what I have. Just my2cents

Ginormous · Jan 27, 2012

Thanks everybody. I'll go make a mess on the floor now.

I'm hoping I still have some air in the lines, so I'll make double dog sure I don't by running a lot of fuel out, not just a few drops.

Ginormous · Jan 27, 2012

Well, I have fuel squirting out of the lines at the injectors now after bleeding the lines thoroughly. I was trying to crank it over and it was starting sound slightly more promising when I noticed my starter was smoking! Specifically, it was smoking right where the heavy battery cable connects to the starter. I guess I'll wait a while and give it another try later. I hope it's not fried...

careyo63 · Jan 27, 2012

While your waiting for it to cool clean the connections on the starter and the battery. Esp. the ground cable that is grounded to the frame. That is one of the most Neglected and needs to have a good connection. Also Use your Decompression to get the motor spinning. It's gets the eng. spinning faster and it's alot easier on the starter. Worst case you may need to get it rebuilt. I had mine done at a local Starter & Alternator shop for 75.00$ and it Works Great.

Ginormous · Jan 27, 2012

careyo63 said:
While your waiting for it to cool clean the connections on the starter and the battery. Esp. the ground cable that is grounded to the frame. That is one of the most Neglected and needs to have a good connection. Also Use your Decompression to get the motor spinning. It's gets the eng. spinning faster and it's alot easier on the starter. Worst case you may need to get it rebuilt. I had mine done at a local Starter & Alternator shop for 75.00$ and it Works Great.

I was just reading in an older thread about starting issues and needing to clean the various connections. I'll do that.

Ginormous · Jan 27, 2012

Again reading old posts... Car Doc says: "The batt voltage should not go below about 10.5v cranking a good starter so this tells me its a bad connection somewhere and its most likely at the battery you are simply loosing current, IE voltage is easy to move amps is hard. Clean the batt terms first. btw

I bet the lights go clear out rather than dim when its turned to crank am I right?

One more thing to check is for heat at the various connections that is usually a dead giveaway of a bad connection try starting it a few times and carefully put a finger on all the connections."

Well, I tried his diagnostic, and my lights almost go out when I turn the key to "start". I also had a connection at the start get very hot; might be my culprit.

careyo63 · Jan 27, 2012

Ginormous said:
I also had a connection at the start get very hot; might be my culprit.

For that to happen Poor or Bad Ground. With the Pos.+ getting Hot and the Starter starts "SMOKING" thats what happens.

It could also be the Starter motor it self that Grounding Out. It won't last very much longer and hopefully it's not the motor or you are replacing or rebuilding it.

284 International · Jan 27, 2012

I think you've fixed it, but found some other stuff to deal with. It can be very easy to get overzealous trying to crank these things to get them to started when they have lost prime. As the others have said, a good cleaning (and maybe new terminals on the ends if they look corroded or loose), and a freshly charged battery will get you up and running again.

Since the power needed to run a starter motor is amps divided by volts, if battery voltage is low the current required must increase proportionally, and that extra current generates potentially damaging heat. Hopefully the starter is still sound; you may get lucky.