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JD500seriesA backhoe, Roosa-Master problem

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Paul Hatch

10-08-2000 09:51:24




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My ancient but solid workhorse, 1973 serial series 130,000 JD 500 series A backhoe has been excellent for the 20 years I have owned it. When I purchased it it already had 4200 hours on road construction. Two weeks ago after operating backhoe for 2 hours diging out drainage ditch I turned of engine to speek to someone. When I started engine it began running on only three of four cylinders and heavy white smoke. I checked fuel system, some dirt had gotten into fuel pump and had cut a hole in the settling bowl screen. I replaced screen, installed new filters, drained off bottem of fuel tank, still 3 cylenders and white smoke. I installed new injector in cold cylender, no change. Any ideas?

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ROBERT

10-08-2000 10:49:53




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 Re: JD500seriesA backhoe, Roosa-Master problem in reply to Paul Hatch, 10-08-2000 09:51:24  
crack the line to the cold cyl and see how much
fuel come out whil it idals (may have to compare it too a good cly.)if the fule flow looks low
the lob in the inj pump may be wore down. if the flow looks good you may have a bad valve
in the head.you may have to borw a comprason tester and check all cyls. hope this help some ROBERT



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