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Re: 7020 john deere rossi master fuel pump
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Posted by jdemaris on April 08, 2007 at 20:11:28 from (66.218.18.244):
In Reply to: Re: 7020 john deere rossi master fuel pump posted by francis pawelek on April 08, 2007 at 19:11:49:
Your friend's comment "injector pump has to be good if it runs the tractor" is, more-or-less, nonsense. With the Stanadyne/Roosmaster pump it is common, when the pump first starts to fail, to run for awhile, quit, and then run again. No offense intended - to you or him, but it's nonsense just the same.
That being said - and injection pump can not operate correct if it's getting air on the suction side - i.e. between the injection pump and fuel tank. But a leak on the high-pressure side - like at your injector lines or injectors will having nothing to do with your problem. In regard to injectors leaking where they go into the heads - that's pretty common. some injectors seal with teflon sealing rings, some with copper washers. If the leak got real bad, you'd get a small compression leak and it would start hissing as the engine was running - but would hardly effect the way it runs.
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