My emax takes a lot of cranking to start. Slightly less when weather is warm. Have tried multiple cycles of the glow plugs to no avail. Always starts eventually...after cranking for 5-10 seconds at a time, multiple times. The battery tested good. All cables, terminals, lugs are clean and tight. Fuel lines are all good and tightly clamped in place. Glow plugs all tested and have no issues that I could find. What should I look at next?
WranglerX
Super Member
Fuel supply .... IF glow plug are good and heat, it's a fuel or air problem.... Does system have electric lift pump to prime/supply injector pump?
JTKub
Veteran Member
Has it done it since new? I had to look it up. It appears to use a Daedong 3C100? I've heard various u-toobers say these are a little cranky in the cold, but you know how accurate that can be.
The little Korean Yanmar 3TNM74F in my TYM will fire right off in the cold, even if you forget to run a glow plug cycle.
The little Korean Yanmar 3TNM74F in my TYM will fire right off in the cold, even if you forget to run a glow plug cycle.
Yeah it's the daedong engine. Where'd you find that info? Good to know that this isn't necessarily just common to all diesel tractors like some people say. It has done this since it was new. That never seemed right to me but I just didn't have the time to do diagnostics on it. I still have a lot to learn but if have a bit more time to do it now.
Kay...I should have mentioned this before but with the long cranking starts I also get a 3-4 blink code which is the magnetic pickup sensor. It was hard to find info on this and I don't have much understanding of this sensor. Is it the same as a crank sensor? It is located somewhere around the bottom of the injection pump. Could it be causing the long cranking issue if it's a bad sensor? Or is it detecting something like incorrect injection timing? Apparently if it detects a sudden slowdown of engine speed during regular operation, it will flip the engine into limp mode (1200rpms) but that has never happened as the tractor has always ran well once it is started. Anyway. Just some more potentially pertinent info I should have shared from the get go. Better late than never I guess.
JTKub
Veteran Member
In terms of the cold start thing, back when I was shopping sub compacts, I watched a few videos of Kioti CS2210 and 2220 owners mention their Daedong engines were and a little hard starting in the cold. They didn't elaborate further or demonstrate the issue, so it's most likely not an issue at all.
Your magnetic pickup sensor thing is interesting. I can't imagine what it would do on a small mechanical diesel other than run the tachometer? Hopefully some smart fellers will chime in. I know on gas engines, if they can't get a good read from a crank sensor (magnetic pickup), if they'll run at all, they will crank for an uncomfortably long time before they'll start.
Your magnetic pickup sensor thing is interesting. I can't imagine what it would do on a small mechanical diesel other than run the tachometer? Hopefully some smart fellers will chime in. I know on gas engines, if they can't get a good read from a crank sensor (magnetic pickup), if they'll run at all, they will crank for an uncomfortably long time before they'll start.
