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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

why does my TD 25B run rough

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fraser7

03-12-2006 11:12:18




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the valves have been done,cam re-ground,and injectors re-done.This engine uses a rossa-master pump to deliver fuel at 1500psi to the large injectors in the heads.If the rossa-master pump needs repair(worn out) would this adversly affect the engine performance even though the main injectors are in good condition? I would like to hear from owners of these machines etc.




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tim24

03-13-2006 15:28:39




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 Re: why does my TD 25B run rough in reply to fraser7, 03-12-2006 11:12:18  
Is tis at idle or wide open.



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fraser7

03-14-2006 09:02:02




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 Re: why does my TD 25B run rough in reply to tim24, 03-13-2006 15:28:39  
It is pretty well through the entire rpm range.The next thing I will look at is the timing--maybe advance it slightly .If there is no improvement I will get the Rossa-master pump rebuilt.



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J. J. from Afton

03-12-2006 16:54:48




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 Re: why does my TD 25B run rough in reply to fraser7, 03-12-2006 11:12:18  
Well if your pump aint working exactly like it should, the engine aint gonna either, its as simple as that.



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