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05-09-2020, 06:42 AM | #1 |
Not Yet Wild
Join Date: Nov 2017
Posts: 26
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2003 TXT Constant valve adjustment
I have a txt that has the usual valve adjustment issues which causes my plugs to foul and poor running. I adjusted the valves, and it ran great, had very little run time, I am guessing half hour over a month period. I was using it to spray weeds around the property, so very slow speeds and constant starting and stopping. About 15 minutes of that and I lost all power, by this I mean would turn over but would not go anywhere in forward or reverse but engine would rev high in neutral. Let it cool, checked valves again and had two that were out of adjustment and fouled plugs. I guess my question is, what causes valves to get out of adjustment that fast...just bad valves in general? Need to replace them? TIA
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05-09-2020, 07:20 AM | #2 |
Vintage tech
Join Date: Sep 2009
Location: South
Posts: 3,210
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Re: 2003 TXT Constant valve adjustment
The intake valves are known to pull into head . You can take a took under valve cover. You will see more threads on two middle valves adjustment which are the intakes. If it don't smoke then you might be good by just replacing the two intakes.
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05-09-2020, 10:00 PM | #3 |
Nincompoop village idiot
Join Date: Apr 2018
Location: Michigan
Posts: 9,625
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Re: 2003 TXT Constant valve adjustment
I'm guessing the 2 valves out if adjustment t are the 2 middle intake valves. If so, replace them. They're shot like trig said.
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06-08-2020, 12:57 PM | #4 |
Not Yet Wild
Join Date: Nov 2017
Posts: 26
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Re: 2003 TXT Constant valve adjustment
Ok I am going to replace them. You’re right, they are the middle too. Any suggestion on what valves to get? Didn’t know if one website or company made better valves than the another. Thanks guys!
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06-08-2020, 01:51 PM | #5 | |
Vintage tech
Join Date: Sep 2009
Location: South
Posts: 3,210
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Re: 2003 TXT Constant valve adjustment
Quote:
I would replace the seal in head , valve seals , timing belt and of course head gasket. Put it back and drive it |
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06-15-2020, 01:47 PM | #6 |
Not Yet Wild
Join Date: Nov 2017
Posts: 26
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Re: 2003 TXT Constant valve adjustment
ok...valves were replaced as well as seals, springs, timing belt and head gasket. Ran it about 50 yards and parked it. Did what I had to do and jumped back in and lost most of my power. Ran it down the road a little and lost even more power. Pulled the plugs and they are fouled bad. I was wondering if maybe my coil is going, i had a similar problem in my boat. When it got hot it would short out. I would have to let it cool until it would work again. any ideas? very annoying especially after you spend some money and time replacing valves for it to still have a problem. However the valves were in bad shape and needed to be changed out, so it wasn't for nothing.
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06-15-2020, 06:24 PM | #7 |
Vintage tech
Join Date: Sep 2009
Location: South
Posts: 3,210
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Re: 2003 TXT Constant valve adjustment
Personally I wouldn't think the coil would be bad. Is this the original carburetor ?
What is your compression now that you have replaced those intakes ? Did you put two new plugs in after this work ? How did it run when you first completed the job ? |
06-15-2020, 09:14 PM | #8 |
Not Yet Wild
Join Date: Nov 2017
Posts: 26
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Re: 2003 TXT Constant valve adjustment
It’s not the original carb, I bought an eBay replacement a couple years back before my rebuild.
I will be checking compression tomorrow Plugs were new a couple weeks ago. Cleaned up and replaced after the valve job. It ran really well for about 30 seconds. Then lost power, I am assuming due to the fouled plugs |
06-15-2020, 10:08 PM | #9 | |
Vintage tech
Join Date: Sep 2009
Location: South
Posts: 3,210
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Re: 2003 TXT Constant valve adjustment
Quote:
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06-16-2020, 03:46 PM | #10 |
Not Yet Wild
Join Date: Nov 2017
Posts: 26
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Re: 2003 TXT Constant valve adjustment
No, I threw it out just about a month ago when I moved shops lol. I just ordered another one. Compression is at about 150 on each cylinder
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