TZ25DA Losing RPM's ~Help!

newholland4me · Nov 26, 2007

Hi again,

Well, guess what.....my husband is in Bangalore!!! Small world. He is a consultant and his company writes proposals to help defense companies secure new contracts. He is over there right now helping LM although I don't know the details of this one. He will have been there 2 weeks all total. This is his first time there and he says it is a pretty wild 'ride'. He is staying in a 5 star which is absolutely superb, but when his driver takes him to the base, he says it is like traveling back in time. No AC, continual power outages, and rest room facilities...well, that would be euphemism.

He has said that the people are incredibly polite and nice no matter where you are. Driving is only done by 'professionals' and he said that it's an experience to say the least. There are no traffic signs or signals and cows, people, dogs everywhere. The drivers just whiz past each other by inches and use their horns.
I know I will hear more detail once he returns (Wed.)

Boy, you aren't kidding when you said complicated fuel system. Looks like a maize to me. lol Of course, even the simplest would appear that way to me.

I am calling my dealer today and seeing what he recommends. I just want to get this fixed so that I can be ready next spring.

Thanks again and have fun in Bangalore!!

newholland4me · Nov 26, 2007

Hi Kevin,

I have not noticed any sort of noise so I am thinking I don't have a problem with the fuel pump. I do remember the mechanic stating that when he was bleeding the fuel, that it was coming out slower than he thought it should. So, maybe there is a kink??
Hey, thanks for the picture. That should be quite helpful....well, for my husband, that is.

I don't know that I would know what I was viewing??

Vermont...eek!! And, I thought it was cold here these past few days. It has been miserable though. Sun's out today. hoooooray!!!

Thanks again for your help.

Karen

kcharbon · Nov 26, 2007

Here's some pics ... they're looking at the fuel filter on the right side of the engine. I annotated the photo of the top of the filter assembly to help identify which hose goes where. Notice that on mine, the #50 hose is looped and almost kinked.

If the tech said that it bled slowly, it's probably a plugged or pinched hose somewhere...or maybe he just didn't know the proper procedure for the TZ's.

Our weather has been in the 40's the past few days...mostly sunny, today is overcast with rain coming later...

jinman · Nov 26, 2007

kcharbon said:
Here's some pics ... they're looking at the fuel filter on the right side of the engine. I annotated the photo of the top of the filter assembly to help identify which hose goes where. Notice that on mine, the #50 hose is looped and almost kinked.

If the tech said that it bled slowly, it's probably a plugged or pinched hose somewhere...or maybe he just didn't know the proper procedure for the TZ's.

Our weather has been in the 40's the past few days...mostly sunny, today is overcast with rain coming later...

You sure are putting a lot of information into your 3rd post ever on TBN.

Good job!

newholland4me · Nov 28, 2007

kcharbon said:
Here's some pics ... they're looking at the fuel filter on the right side of the engine. I annotated the photo of the top of the filter assembly to help identify which hose goes where. Notice that on mine, the #50 hose is looped and almost kinked.

If the tech said that it bled slowly, it's probably a plugged or pinched hose somewhere...or maybe he just didn't know the proper procedure for the TZ's.

Our weather has been in the 40's the past few days...mostly sunny, today is overcast with rain coming later...

Hey, thanks a bunch. My husband is home from India today and I took the TZ out to mow just to see if it would 'perform' its tricks so he could experience. And, 'ole Bessie' came through with flying colors....UGH! Anyhow, I don't exactly what his impression is yet. We received a fax from our purchasing dealer with some hits from the NH site, but none really seem to fit the scenario. *sigh* I will of course print out your post along with pics. Very nice of you to take the time to post. I started mowing at 96hrs. and at 96.8 RPM's dropped and running ROUGH. Had to shut off sit a just a few min., restart and then maintain RPM's at around 1K until running smoother and then VERY gradually move up to around 2K and limp back to the barn.
Well, at least I figured out how to properly post reply directly back to fellow poster. The 'lingo' is different here...."quote".

When we figure this problem out, I will definitely share.

Thanks again.

newholland4me · Nov 28, 2007

jinman said:
If you've made it this far, you've got a good understanding of what I meant by a complicated fuel system. I suspect you will find the problem is something simple. It might even be that additional filter that is separate from the main filter bowl. The fact that the engine runs fine without a load and then sputters when you put it under load is a sure sign of fuel starvation. You just have to find and eliminate the source of the obstruction.

May I ask what part of India your husband is in? My company has just acquired a company in Bangalore. Last week we were video-conferencing with our colleagues there and I would not be surprised to have to make a trip or two there within the next couple of years. However, most of our work can be done by teleconference or web meetings. They are a lot cheaper than travel and hotels.

I posted this in a separate post to the thread, but meant to post directly to you. Didn't know how. But, figured it out tonight. Just in case, here it is again:

Hi again,

Well, guess what.....my husband is in Bangalore!!! Small world. He is a consultant and his company writes proposals to help defense companies secure new contracts. He is over there right now helping LM although I don't know the details of this one. He will have been there 2 weeks all total. This is his first time there and he says it is a pretty wild 'ride'. He is staying in a 5 star which is absolutely superb, but when his driver takes him to the base, he says it is like traveling back in time. No AC, continual power outages, and rest room facilities...well, that would be euphemism. He has said that the people are incredibly polite and nice no matter where you are. Driving is only done by 'professionals' and he said that it's an experience to say the least. There are no traffic signs or signals and cows, people, dogs everywhere. The drivers just whiz past each other by inches and use their horns.
I know I will hear more detail once he returns (Wed.)

Boy, you aren't kidding when you said complicated fuel system. Looks like a maize to me. lol Of course, even the simplest would appear that way to me.

I am calling my dealer today and seeing what he recommends. I just want to get this fixed so that I can be ready next spring.

Thanks again and have fun in Bangalore!!

LarryD · Nov 28, 2007

jinman said:
and I would not be surprised to have to make a trip or two there within the next couple of years.

jinman
Let me give you a tip when dining out. DON'T go to Whimpy's for a burger. Boiled hamburger is not something that will be served in Texas anytime soon.

beckmurph · Nov 10, 2008

I hate to dredge up an old thread, but NewHolland4me, what was the outcome of your fuel problem?

newholland4me · May 7, 2010

Sorry for the LONG delay in responding, but haven't been on here in a while. It ended up being a minute piece of debris in the secondary fuel filter.

jinman · May 8, 2010

newholland4me said:
Sorry for the LONG delay in responding, but haven't been on here in a while. It ended up being a minute piece of debris in the secondary fuel filter.

Wow! I retired and started drawing SSI since this post started.:laughing:

It's good that you found your problem. Is your hubby still making trips to India? I'm living the good life since I retired and not lookin' back.

mojo362 · May 16, 2010

Revisited because I'm having the same issues...can't see how a minute piece of debris in a filter meant to catch minute pieces of debris could have been the issue... The filter has surface area sufficient to catch "x" amount of minute debris -- that's why it's a filter. Anywho...

I had the issue previously and mech at local dealer said to blow back through system with some air. That did removed (push back) the obstruction, but didn't know where the obstruction was exactly. The tractor ran for a year with no further problems. Now the symptoms have returned so I pulled the seat pan and have accesss to the reserve tank, which all the fuel pass through. My recollection is that the mech said there was a screen or in one of the two tanks to catch larger debris... I'll know soon hopefully. if not atleast the bottom of the seat pan gets cleaned.

mojo362 · May 16, 2010

Took it all apart...no screens in main or reserve tanks, the factory fuel hoses are badly deteriorated and I dislodged rubber flakes from the lines between the main and reserve tank and the reserve to inline fuel filter...the inline filter is doing it's job, finer dark (probably rubber) in there as well. I will replace all fuel lines and both filters at this stage of the game. The tractor is 3 yrs old with 210 hours.

99SVT · May 16, 2010

Well, that sucks!! Those fuel lines should not be doing that, but sounds like you found your problem.

I guess something to look forward to on my tractor.

Soundguy · May 17, 2010

I remember when the diesel here went bio blend.. I lost orings in all my fuel valves and on hard line fittings to filters and such...

soundguy

newholland4me · May 21, 2010

jinman said:
Wow! I retired and started drawing SSI since this post started.:laughing:

It's good that you found your problem. Is your hubby still making trips to India? I'm living the good life since I retired and not lookin' back.

No more trips to India. Spending a lot of time in WA along the Hood river. Good for you!!! Enjoy!!

Well, I am searching these forums again....mowing today and having the same problem as before. ugh Only this time, I am pretty sure I blew the main fuse after the engine starting vibrating and cut out. And, yes, I am here flying solo. I am learning WAY more than I ever wanted to about this darn tractor. Ole Bessie is in one of the front fields cuz she's DOA. I have NO power at all e.g. no panel lights no nuttin. Battery is fine. I found the main fuse and pulled it (not the easiest thing to access). Will get one tomorrow and see if this does the trick. *fingers/toes crossed* I sure hope this is the problem. Seems like we continue to have problems with the secondary fuel filter or 'maybe' fuel pump??? She runs just great and then will intermittently act like fuel starved and I have to cram and pump on the gas pedal FAST to keep her going. Well, this last time she just started shuttering, I disengaged the PTO, but alas she croaked. :thumbdown: When I tried to restart, DOA.

Do you think I am on the right track? I spent the better part of last evening figuring out the 3pt. hitch for new (used) brush mower. Shouldn't I be on the sofa eating bon bons??
Or, maybe it's time for a condo.

newholland4me · May 22, 2010

mojo362 said:
Took it all apart...no screens in main or reserve tanks, the factory fuel hoses are badly deteriorated and I dislodged rubber flakes from the lines between the main and reserve tank and the reserve to inline fuel filter...the inline filter is doing it's job, finer dark (probably rubber) in there as well. I will replace all fuel lines and both filters at this stage of the game. The tractor is 3 yrs old with 210 hours.

Holy crap! I am saving your posts for DH. I am STILL having the same problem!!!! Hubby keeps insisting that I am not careful and am getting debris into the secondary fuel filter. Ok, so I am blond, but give me a break. I am back on here because the same thing happened today intermittently while mowing....acting like fuel starved. I have to cram and pump on the gas pedal FAST and furious to keep her going. But, then the last time, engine vibrating, shuttering, I disengaged the PTO but too late. DOA Now, I have nothing...e.g. NO power at all, no panel lights no nuttin. I 'think' the main fuse is blown. Took me a little time to locate it and then a little tricky getting to it to get it out. Will get a new one tomorrow and hopefully at least get it started to limp back to the barn. I am so frustrated with this. Mine has 230 hrs. and is only 4 yrs. old. We take good care of it too...under cover at all times, oil changed, filters changed, greased, cleaned, etc.

My husband is pretty mechanically inclined. How difficult a task was it for you to do all of that? How much time? Where did you get replacement parts?

What were your tractor's symptoms?

Thank you for your help.

newholland4me · May 22, 2010

mojo362 said:
Took it all apart...no screens in main or reserve tanks, the factory fuel hoses are badly deteriorated and I dislodged rubber flakes from the lines between the main and reserve tank and the reserve to inline fuel filter...the inline filter is doing it's job, finer dark (probably rubber) in there as well. I will replace all fuel lines and both filters at this stage of the game. The tractor is 3 yrs old with 210 hours.

Forgot to ask...have you reassembled and tested? If so, is problem resolved?

I am hoping that you may have found the answer for so many of us suffering with the same issue. I know my husband said he was not impressed with the quality of the hoses.

Thank you and I look forward to hearing good news!!

newholland4me · May 22, 2010

jinman,

I have a great idea! Since you are retired and you live in Wise County, how about making a visit to Parker County and fixing my tractor?

I make some mean chocolate chip cookies! :licking:

mojo362 · May 22, 2010

Reassembled after flushing tanks, changing two short fuel lines and new filters... wife says still have same issue! I suspect vapor lock in reserve tank.. Next step is to bypass reserve tank and feed fuel directly to primary filter. The reserve sits in an area that I would consider subject to heat buildup.

I guess we'll get to the bottom of this later, rather than sooner.