Hi guys
I have had this backhoe for a year now and unfortunately it just just been a down hill experience:(
I’m unsure of the year of it but I’d say anywhere between 86 and 92
So as the story goes I was having some issues with speed and power , I read on here about the filter so I had a look at that and it was brown so got new filter changed that over hen read that there was a filter in the injector so found that and it covered in crap cleaned them up dropped the old fuel as it looked bad then put 80 litres of new diesel in used the little hand pump to pump it round checked for air ect and now it just won’t start
It just turns over but doesn’t ignite.
Any one ever had the same problem ?
Cheers in advance
Mat
Can not start jcb 3cx backhoe, help
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Re: Can not start jcb 3cx backhoe, help
What colour cab? Black or Grey originally. Have you got any smoke coming out of the exhaust when you are turning over? The most obvious thing would be to go through the bleeding procedure again. The final part would be loosening an injector pipe at the injector as you turn it over. Try that first.
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Re: Can not start jcb 3cx backhoe, help
Just been through this with mine; the manual (here) describes the bleeding process,but essentially:
Crack the fuel outlet union on the debris trap (chassis leg) and the gravity feed from the tank should force fuel out of it then tighten up the union
Move to the fuel filter (on the engine), crack the fuel outlet union then on the mechanical lift pump pump the manual overide lever until fuel starts coming out. Tighten up the union.
Now move to the mechanical injector pump and there are two bleed screws on the pump body (you'll need to refer to the manual for the positions) crack the lower one and manually pump the lift pump till fuel comes out, tighten the bleed screw, move to the upper bleed screw and repeat.
Now ideally you need an assistant for this, wear fuel proof gloves and get a rag; go to the injector furthest from the pump and crack the inlet union, get your assistant to briefly crank the engine, while you with rag in hand watch the union when fuel starts coming out of the union catch it with the rag, stop cranking and tighten the union, repeat for the next injector working back towards the pump and so on. If you are unlucky, like I was, you may have to repeat the injector bleeding a couple of times. Mine actually fired up by the time I'd got to the last injector on the third attempt. It's a matter of perservering with it till all the air is removed.
Fiddle with anything on the fuel system on these and you need to bleed them
Crack the fuel outlet union on the debris trap (chassis leg) and the gravity feed from the tank should force fuel out of it then tighten up the union
Move to the fuel filter (on the engine), crack the fuel outlet union then on the mechanical lift pump pump the manual overide lever until fuel starts coming out. Tighten up the union.
Now move to the mechanical injector pump and there are two bleed screws on the pump body (you'll need to refer to the manual for the positions) crack the lower one and manually pump the lift pump till fuel comes out, tighten the bleed screw, move to the upper bleed screw and repeat.
Now ideally you need an assistant for this, wear fuel proof gloves and get a rag; go to the injector furthest from the pump and crack the inlet union, get your assistant to briefly crank the engine, while you with rag in hand watch the union when fuel starts coming out of the union catch it with the rag, stop cranking and tighten the union, repeat for the next injector working back towards the pump and so on. If you are unlucky, like I was, you may have to repeat the injector bleeding a couple of times. Mine actually fired up by the time I'd got to the last injector on the third attempt. It's a matter of perservering with it till all the air is removed.
Fiddle with anything on the fuel system on these and you need to bleed them
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Re: Can not start jcb 3cx backhoe, help
Slooby wrote:Just been through this with mine; the manual (here) describes the bleeding process,but essentially:
Crack the fuel outlet union on the debris trap (chassis leg) and the gravity feed from the tank should force fuel out of it then tighten up the union
Move to the fuel filter (on the engine), crack the fuel outlet union then on the mechanical lift pump pump the manual overide lever until fuel starts coming out. Tighten up the union.
Now move to the mechanical injector pump and there are two bleed screws on the pump body (you'll need to refer to the manual for the positions) crack the lower one and manually pump the lift pump till fuel comes out, tighten the bleed screw, move to the upper bleed screw and repeat.
Now ideally you need an assistant for this, wear fuel proof gloves and get a rag; go to the injector furthest from the pump and crack the inlet union, get your assistant to briefly crank the engine, while you with rag in hand watch the union when fuel starts coming out of the union catch it with the rag, stop cranking and tighten the union, repeat for the next injector working back towards the pump and so on. If you are unlucky, like I was, you may have to repeat the injector bleeding a couple of times. Mine actually fired up by the time I'd got to the last injector on the third attempt. It's a matter of perservering with it till all the air is removed.
Fiddle with anything on the fuel system on these and you need to bleed them
Hi mate
Thank you! I will try this all out when I finish work tomorrow and let you know the results.
One more thing as I was tinkering around the machine I found that the thermostart had no current should it have a constant 12v to it ?
Thanks again
Mat
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Re: Can not start jcb 3cx backhoe, help
essexpete wrote:What colour cab? Black or Grey originally. Have you got any smoke coming out of the exhaust when you are turning over? The most obvious thing would be to go through the bleeding procedure again. The final part would be loosening an injector pipe at the injector as you turn it over. Try that first.
Hi mate
The cab is grey
I saw a little bit of smoke come out the exhaust today. I’ll go through the bleeding procedure again like you say
Thanks
Mat
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Re: Can not start jcb 3cx backhoe, help
Its possible you could have a bit of crap in the fuel line between the tank and the injectors i had this on an old 3c mk2 several years ago. But if yo u say you have started to get smoke coming out of the exhaust i would say you still have a bit of air in the system, you could give it a squirt of easy start and see if that get you firing and then drawing the fuel through.
Re: Can not start jcb 3cx backhoe, help
Hi Matt,
If you're Aussie, Easy Start = Start you Bastard!
To find out your year model, check your serial number on the silver plate (Right side as you sit in the seat, just near the front wheel) it should end with /L (Leyland engine) or /P (Perkins engine) - Rouse Hill Tractors can tell you your year model.... so can some of the guys on here. It will also help with part numbers etc.
Where are you in Aus?
Cheers
If you're Aussie, Easy Start = Start you Bastard!
To find out your year model, check your serial number on the silver plate (Right side as you sit in the seat, just near the front wheel) it should end with /L (Leyland engine) or /P (Perkins engine) - Rouse Hill Tractors can tell you your year model.... so can some of the guys on here. It will also help with part numbers etc.
Where are you in Aus?
Cheers
Re: Can not start jcb 3cx backhoe, help
Cheers Agrimax! I only just noticed that - newby! Thanks for taking the time to let me know.
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