Bleeding injectors!

#1 by Nik Rite , Thu Jan 24, 2019 9:14 am

I removed and restored my tank (classic). Think I got it just in time and new stack pipes fitted and fuel filter. Nows the time to reprime the system. Ive attached the out and back pipes on the tank and filled with 20 litres. I attached the flow in to the filter assembly. Ive attached a 6" length of hose to the filter out and attached that to a Pella vacuum pump. The plan was that between using the Pella and the priming pump on top of the filter assembly, pump the fuel up until it runs into the Pella. That would show the fuel line and filter is full .Then remove the Pella and using the priming pump push more fuel out as I attach the line to the injector pump. Would this work? I appreciate there will be a small amount of air in the system somewhere but not much. Would this bleed itself?
If I have to bleed the injectors how do I do this? Do I have to bleed them all or just one or two until the engine starts and the other two would then self bleed? Do you bleed them with the engine turning over or by pressing the priming pump? Ta for help as always Nik


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RE: Bleeding injectors!

#2 by 123hotchef , Thu Jan 24, 2019 10:52 am

crack the injectors off and turn the engine over to bleed out the last bit of air


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RE: Bleeding injectors!

#3 by Nik Rite , Thu Jan 24, 2019 11:15 am

Do I need to do this for all four injectors? I presume your mate turns it over and while cranking you crack it until it bleeds fuel. close that injector then onto the next etc. Must you do all four or if the engine runs fine can you leave some untouched? Ta Nik


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RE: Bleeding injectors!

#4 by Rem708 , Thu Jan 24, 2019 11:19 am

provided the fuel filter is full and pressurized with the pump then just crank it. Maybe put your foot on the accelerator to improve the diesel flow. I've never had a problem on other engines.


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RE: Bleeding injectors!

#5 by 123hotchef , Thu Jan 24, 2019 11:36 am

yes actually if u aint touched the pump or hard lines they should still be full of fuel and air free


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RE: Bleeding injectors!

#6 by Nik Rite , Thu Jan 24, 2019 11:48 am

Ta guys


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RE: Bleeding injectors!

#7 by Tek76 , Thu Jan 24, 2019 3:52 pm

Worst part is pumping on the filter pump as it's about 5ml a press it feels like


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RE: Bleeding injectors!

#8 by Heathen , Thu Jan 24, 2019 5:06 pm

Quote: 123hotchef wrote in post #5
yes actually if u aint touched the pump or hard lines they should still be full of fuel and air free


Never needed to bleed these before even after having all the injectors and high pressure fuel lines out.


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Last edited 01.24.2019 | Top

RE: Bleeding injectors!

#9 by 123hotchef , Thu Jan 24, 2019 6:19 pm

Quote: Heathen wrote in post #8
Quote: 123hotchef wrote in post #5
yes actually if u aint touched the pump or hard lines they should still be full of fuel and air free


Never needed to bleed these before even after having all the injectors and high pressure fuel lines out.



really, i always bleed them after changing injectors


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RE: Bleeding injectors!

#10 by Nik Rite , Tue Jan 29, 2019 7:11 pm

She runs!!!!......Pella pump worked great....probably took 10 seconds to draw it up and fill the filter. Then attached that line to the fuel pump. As I turned the ignition my mate pumped the primer ..It started almost instantly...roughly but then settled down...job done ...thanks guys Nik


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