X595 will not start

[JdmansX595]

I have had trouble starting my tractor when it's been cold outside but it's always started, if not the 1st try usually by the 2nd. Now tonight it's 10 degrees with a wind chill of 10 below. Tractor will not start. I'm guessing the fuel is gelled up, is there anyway I can tell if that's the problem?
Also wondering if maybe the glow plugs are bad.... Thanks for any help

 

[murphy1244]

Drop some power service Red in. do you own a Volt Meter.

 

[JdmansX595]

Yes I have a volt meter.... What is power service red?

 

[murphy1244]

Yes I have a volt meter.... What is power service red?

Heats up the fuel for emergency service. Check voltage at glow plugs

 

[JdmansX595]

Heats up the fuel for emergency service. Check voltage at glow plugs

Ok. What should voltage at the glow plugs be

 

[murphy1244]

12Volts, try power service first.

 

[jenkinsph]

If you have a clamp on current meter you could see if the glow plugs are drawing enough amps to work. Just a guess but about 10 amps per cylinder I think. About the gelling fuel if that in fact is the problem you might try a hair dryer to warm up the lines to get it running. Might also try a couple of small electric heaters on either side of the engine to warm it up. I use fuel conditioner to prevent this problem in all of my diesels. Once you get it running adding the conditioner (with anti gelling additives) and allow it time to mix and run through all the lines and injector pump.

 

[jenkinsph]

Good to see if you have the 12 volts at the glow plugs but if the glow plugs are burned out or open you can still read the 12 volts and not have them work. Checking for the current draw will indicate if the glow plugs are working.

 

[murphy1244]

Hey Steve, Kinda wanted to make sure there is power at the glow plug. Tells us his Relay works.

 

[JdmansX595]

I checked voltage at the glow plugs on all 3 cylinders and the center plug does not have any voltage. Does that mean it's a bad glow plug or relay?

 

[JdmansX595]

Correction: there is voltage at all 3 glow plugs, the center glow plug is coated in black paint which I did not notice at first, had to scrape a little off to get a reading. The other 2 plugs have no paint on them. I wonder if they have been replaced

 

[jenkinsph]

I checked on line and Deere parts shows only one relay for the three glow plugs. Reasoning that you have power to cyl 1 and 3 would lead me to check continuity of the wiring for the middle #2 glow plug. Likely it has a loose connection between the relay and the glow plug. I don't have a manual for the 595 but would think the three glow plugs are wired in parallel.

Do you have a meter to read the current draw when the ignition and glow plugs are cycling?


Edit
I see you now have power to all three glow plugs so the question is whether the glow plugs are good. Two ways to check them, with the current clamp mentioned above or disconnect a wire from each glow plug and measure the ohms of each glow plug with key off. Measure across the glow plug terminals if it is open or high resistance then the glow plug is burned open and needs replacing. Measure across all three and post the results.

 

[JdmansX595]

Checked current on all 3, the first and last one read about 9A when I first turn the key then slowly drop to about 6A over the course of about 10 seconds then drop to 0 when the relay kicks off. The middle plug reads 0. So I've got one bad glow plug.
Also my reading for plug 3 was taken by pulling right off the main power wire which is on the first plug. The glow plugs are then all wired in series. I checked to see if the glow plug wiring was good by removing the wire from plug 3 and rechecking my current and it was just shy of 1A so I think I also have bad wiring.

 

[jenkinsph]

In keeping the thread correct for future readers the glow plugs are wired in parallel and it appears that the middle glow plug which is original is finally burned out. The first and third glow plugs have been replaced previously. I recommended checking the middle glow plug for resistance to determine for sure that it is opened up just to be certain about it. One glow plug while it may not be the root cause of this tractor not starting will make it easier to start after all repairs are made.

I would replace the bad glow plug before concerning myself with the wiring unless it is frayed or nicked up.

 

[JdmansX595]

after replacing the bad glow plug and tightening down all the wires the tractor started up right away. I think a loose hold down nut on the last glow plug may have been causing it to not get the power it needed.

After getting the tractor running I changed oil, air filter and fuel filter.... once again the tractor will not start. I belive there is a procedure to priming the fuel pump, but since i have no owners manual I do not know how this is done. I tried cracking the fuel injectors but this still did not seem to help. Please help :confused3:

 

[arlen4720]

after replacing the bad glow plug and tightening down all the wires the tractor started up right away. I think a loose hold down nut on the last glow plug may have been causing it to not get the power it needed.

After getting the tractor running I changed oil, air filter and fuel filter.... once again the tractor will not start. I belive there is a procedure to priming the fuel pump, but since i have no owners manual I do not know how this is done. I tried cracking the fuel injectors but this still did not seem to help. Please help :confused3:

HERE IS A LINK TO A MANUAL that's the nice thing about Deere...online manuals for even the older ones

No pump priming procedure that I know of.
It should be the same as my x748, and it's pretty rough getting it started after a filter change. Open the throttle up, it seems to help, but there is allot of cranking.