Go BottomNo Power after servicing my1725 NH
 | artisticsign
Join Date: May 2004 Posts: 1 Missouri 
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2004-05-24 86716
I recently serviced my 1725 NH diesel. A friend was helping. It was running fine before hand. After changing the fuel filter, it must have got an air bubble. I was going to open the bleeder, but before I could do that, he had already tried to crack loose one of the injectors to bleed it. SInce I got it started, it has no power. It bogs down when I'm hogging. It has to crank for about 20 secs to start. It has a very slow response to the accelerator. Is there a filter in the tank that could be blocked? I can't hardly use the front end loader now because it is so weak. It's not getting fuel, maybe the fuel shutoff is broken inside???? Would appreciate any help. Thanks.
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 | oneace
Join Date: Mar 2004 Posts: 1490 south central pa 
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2004-05-25 86845
Sounds like you still have air in the lines. It will not bleed out by it self you have to crack the lines at the injector to get rid of it all. Another thing that sounds like is that you may have tried to use ether to get it firing. If you did plan on getting the engine rebuilt cause yo blew out the rings. ....
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| oneace
Join Date: Mar 2004 Posts: 1490 south central pa
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2004-05-25 86846
Try a compression test. Should be between 300 and 400 lbs. With no more than 25 lbs difference between cylinders. ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley 
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2004-05-26 86887
My 1710 pump is very sensitive to air and it doesn't have a self-bleeding system. I've had to bleed the fuel lines several times to clear air after filter changes. I haven't had to bleed the injector lines though. If yours is similar and it barely runs, puffs gray smoke is unstable at idle and won't take throttle air is a good bet. Some tractors do have a screen inside the tank or in a fitting at the outlet. The stream of fuel that comes out of the filter bowl when bleeding should indicate if there's a blockage ahead of the filter. A similar check on the stream when bleeding the pump should indicate if there's a blockage at the filter (wrong filter or installation etc.).
I think owners' manuals give procedures for bleeding both the fuel and injector lines (the bleed port on my pump was hard to identify). I'd make sure the fuel lines are bled and then proceed to the injector lines. There are some safety issues so a manual's procedures should be followed. The manuals don't mention that several attempts may be needed to be successful and making an oily mess in the engine compartment is likely. ....
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