1988 JCB 3xc 4WD Grey Cab

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essexpete
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Re: 1988 JCB 3xc 4WD Grey Cab

Post #21 by essexpete » Mon Jan 22, 2018 1:12 am

Yes the wire might be shorting to the frame somewhere. Looking good.
BTW if you are shifting old road scalping that has stood for a long while (and you have the time) break them out with the back hoe.


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NorthStar
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Re: 1988 JCB 3xc 4WD Grey Cab

Post #22 by NorthStar » Sat Dec 07, 2019 9:23 pm

Any one know what might course this problem

When using full power the engine is starved of fuel and starts to stop unless I pull foot off the pedal.
Yes I have changed fuel filter and cleaned all relevant components.


agrimax
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Re: 1988 JCB 3xc 4WD Grey Cab

Post #23 by agrimax » Sat Dec 07, 2019 10:47 pm

Did you clean the filter in the fuel inlet end of the injector pump?


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NorthStar
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Re: 1988 JCB 3xc 4WD Grey Cab

Post #24 by NorthStar » Sat Dec 07, 2019 10:53 pm

No I doesn’t I’ll have a look for it and give it a clean


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Re: 1988 JCB 3xc 4WD Grey Cab

Post #25 by diggerjones » Sun Dec 08, 2019 10:22 am

Definitely pencil filter in banjo bolt on pump. You will have done the lift pump gauze I'm sure


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NorthStar
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Re: 1988 JCB 3xc 4WD Grey Cab

Post #26 by NorthStar » Sun Dec 08, 2019 10:51 am

Yes iv done the lift pump will go look at the injection pump this morning.
Thanks for help


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NorthStar
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Re: 1988 JCB 3xc 4WD Grey Cab

Post #27 by NorthStar » Sun Dec 08, 2019 12:36 pm

Had a look and opened where the filter should be but no filter.
The lift pump on her is one that can’t be opens but there is a filter on the inlet. The pump dose seam to be pumping at the first few strokes but then goes flat?? Is this suspicious.


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Re: 1988 JCB 3xc 4WD Grey Cab

Post #28 by essexpete » Sun Dec 08, 2019 12:40 pm

Not familiar with this model but is there a sediment bowl tucked out of sight somewhere before the lift pump?


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Re: 1988 JCB 3xc 4WD Grey Cab

Post #29 by NorthStar » Sun Dec 08, 2019 12:51 pm

Hi yes there is a sediment bowl and Iv removed and cleaned it. At first I was hoping that was all that was starving her of fuel but its something els.
Even blown air back in to the tank incase something was blocking the fuel but it runs out constant.


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Re: 1988 JCB 3xc 4WD Grey Cab

Post #30 by agrimax » Sun Dec 08, 2019 9:43 pm

Are you absolutely certain there is no filter in the inlet end of the inj pump. Just in case you're not familiar with them,you can only see the top rim of it in the hole. Needs picking out with a hooked end on a piece of wire or similar(very carefully so as not to pull up the valve body it sits around).
Can you plumb in a drum of fuel and set it on the bonnet temporarily just to give a gravity feed and bypass the lift pump etc?


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