Kubota B7000 doesn't start

[HFrederik]

-Kubota B7000 that was somewhat neglected and left outside for several years.
Glow plugs were both defective, as well as 1 injector did not work. (replaced)
Diesel comes up to the injector.
I have tried to start it a hundred times, it occasionally starts, but it is done immediately.
The connecting hoses between the injectors and then back to the tank are not filled, even if you remove this, diesel does not come out there. (but it does if the nut that comes from the diesel pump is loosened. Who can help further. The video has been shortened, I usually preheat it for a minute. Thanks in advance!

 

[5030]

One thing you NEVER do is screw with the throttle when starting. You leave it in the idle setting because a mechanical pump will always start at full throttle and the immdeiately return to idle once the motor catches. I see no smoke which tells me the lift pump has failed. It will be a mechinical (camshaft) driven pump on the side of the motor and even thought the fuel tank is higher than the pump, it still requires one to pressurize the fuel going to the pump.

All you are accomplishing by excessive cranking is destroying the starter. If it's getting fuel delivery you should see white smoke prior to the engine catching and then a puff of black as it catches. Real simple engines, mechanical pumps and nothing complex. You have a lift pump issue for sure.

 

[HFrederik]

One thing you NEVER do is screw with the throttle when starting. You leave it in the idle setting because a mechanical pump will always start at full throttle and the immdeiately return to idle once the motor catches. I see no smoke which tells me the lift pump has failed. It will be a mechinical (camshaft) driven pump on the side of the motor and even thought the fuel tank is higher than the pump, it still requires one to pressurize the fuel going to the pump.

All you are accomplishing by excessive cranking is destroying the starter. If it's getting fuel delivery you should see white smoke prior to the engine catching and then a puff of black as it catches. Real simple engines, mechanical pumps and nothing complex. You have a lift pump issue for sure.

thanks for your reply. there is indeed smoke coming out (only black). i will look at the pump.

 

[Ed ke6bnl]

One thing you NEVER do is screw with the throttle when starting. You leave it in the idle setting because a mechanical pump will always start at full throttle and the immdeiately return to idle once the motor catches. I see no smoke which tells me the lift pump has failed. It will be a mechinical (camshaft) driven pump on the side of the motor and even thought the fuel tank is higher than the pump, it still requires one to pressurize the fuel going to the pump.

All you are accomplishing by excessive cranking is destroying the starter. If it's getting fuel delivery you should see white smoke prior to the engine catching and then a puff of black as it catches. Real simple engines, mechanical pumps and nothing complex. You have a lift pump issue for sure.

 

[Ed ke6bnl]

I do see some white smoke on the opposite side these fellow is standing. not question your thinking

 

[5030]

Just my observance. I owned one of them many years ago and they are rock simple.

 

[Tinhack]

Bleed the injectors until there's no bubbles coming out of the lines. Before you do that, check the compression. It's trying to start but short on compression, fuel or air. I agree, give your starter a break. I start my Kenbota with the throttle just off idle so the alternator kicks in. I don't mess with it after that until it starts--Usually instantaneously. There's no accelerator pump or butterfly on diesels so don't F with the throttle. It just shows your inexperience.