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jcb 3c mk2 no fuel to injector

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grumpi-g
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jcb 3c mk2 no fuel to injector

Post #1 by grumpi-g » Sun Oct 01, 2017 12:48 pm

my faithful old girl finally failed me halfway through digging footings for new home.
manual lift pump ok, fuel coming from both bleed screws on injector pump.
nothing coming out of pump to injectors.
help appreciated


longreach1976
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Re: jcb 3c mk2 no fuel to injector

Post #2 by longreach1976 » Sun Oct 01, 2017 3:04 pm

Hi grumpi check to see if stop control has returned Spring might be broken
If it's an electric stop /start make sure you have 12 volts and it makes a clicking noise when you switch on and off


Topic author
grumpi-g
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Real name: Graham walker
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Re: jcb 3c mk2 no fuel to injector

Post #3 by grumpi-g » Mon Oct 02, 2017 12:15 pm

Hi, thanks for your prompt response, not sure about engine stop, unit has no electrics working apart from battery charging. to stop engine I set to min rpm then let clutch stop the engine. I'm really looking for service info for the injection pump especially pics. regards g


longreach1976
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Re: jcb 3c mk2 no fuel to injector

Post #4 by longreach1976 » Thu Oct 05, 2017 3:28 pm

Hi Grumpi how did you get on with the fuel problem


topkit
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Re: jcb 3c mk2 no fuel to injector

Post #5 by topkit » Tue Oct 10, 2017 6:39 pm

If you are not getting fuel through to the injectors you could have a blokage from the tank, open the bonnet and (if you are sitting in the cab facing forwards it is in the engine bay up against what is the bulkhead sort of beside the battery you will see a rubber tube which is coming from the fuel tank pull the tube off an put some air through it, my old 3c mk ran out of fuel once and after new lifter, fuel filters etc it still would not start, then i blew down the rubber tube and there was a fairly loud plop as the muck dropped back into the bottom of the tank then fuel started to pour up the tube snd the machine fired up straight away. Let us know how you get on.


topkit
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Re: jcb 3c mk2 no fuel to injector

Post #6 by topkit » Tue Oct 10, 2017 6:42 pm

Ahh ignore my last post i have just read your first post again. As already mentioned try the stop pull when it is pushed back in has the little arm on the pump moved back fully.


essexpete
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Re: jcb 3c mk2 no fuel to injector

Post #7 by essexpete » Tue Oct 10, 2017 11:02 pm

Is it a rotary pump? Some have a small filter where the feed pipe goes into the pump.


longreach1976
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Re: jcb 3c mk2 no fuel to injector

Post #8 by longreach1976 » Wed Oct 11, 2017 9:45 am

One other thing to check is the pump turning check the drive you will have to disconnect the injector pipes and fuel pipes slide the pump back and check the drive


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