My tdm running bad.

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Lord Reeper
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My tdm running bad.

Post by Lord Reeper » Tue Apr 14, 2020 9:11 pm

Hello there just got myself a 1992 tdm 850. . It ran rough just after I got it. I replaced reg rec. And stripped replaced carb seals and emulsion tubes . It runs a lot better when I rev it up. But wont tickover. as if drawing to much air. I have reduced the large breather pipes at top of carbs to narrower . Any ideas

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Elmer J Fudd
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Re: My tdm running bad.

Post by Elmer J Fudd » Tue Apr 14, 2020 10:27 pm

Could be carbs out of balance, holed air filter or airbox connection, sticky flaps, bad / contaminated fuel?

Contact the previous owner, OK they may deny all knowledge, but they may be able to help if has occurred before.

Is there a specialist tedium forum?

cowling
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Re: My tdm running bad.

Post by cowling » Tue Apr 14, 2020 11:54 pm

Carpe tdm is a great tdm site, full of information.
I have a 900 an it's been a great bike, good luck sorting it out.

Dark Knight
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Re: My tdm running bad.

Post by Dark Knight » Wed Apr 15, 2020 7:00 pm

Those TDM's were built to last forever.
Well its either carburation or ignition.
Maybe need to put the jets through the ultrasonic cleaner if you believe that the Carbs are properly balanced.
Not sure what the electronic ignition is like in terms of reliability on those models.
If all else fails, you could always go into your local Yamaha dealer and speak to one of the mechanics, he may just come up with a comment that solves your problem.

Lord Reeper
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Re: My tdm running bad.

Post by Lord Reeper » Thu Apr 16, 2020 7:18 am

Thanks for advice. It's been a pain so far. Previous owner no help. I.ll sort it thanks.

Tonibe63
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Re: My tdm running bad.

Post by Tonibe63 » Thu Apr 16, 2020 7:49 am

Great bikes.
They were known for problems if the carbs are not balanced accurately, there is a linkage between the two carbs and from memory the haynes manual tells how to set them up.
Carpetdm is also a great font of knowledge.
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Re: My tdm running bad.

Post by Brenhden » Thu Apr 16, 2020 8:38 am

cowling wrote:
Tue Apr 14, 2020 11:54 pm
Carpe tdm is a great tdm site, full of information.
I have a 900 an it's been a great bike, good luck sorting it out.
Love a pun name :D
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Re: My tdm running bad.

Post by Flipflop » Thu Apr 16, 2020 7:46 pm

If you’re in the East Midlands the mechanic at Webbs in Lincoln (Yamaha dealer) is excellent.

Dark Knight
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Re: My tdm running bad.

Post by Dark Knight » Fri Apr 17, 2020 5:13 pm

Was thinking that it could be an air around the caburator area (rubbers getting hard), maybe trying spraying with some soapy water or similar, you might be lucky.

Hugh
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Re: My tdm running bad.

Post by Hugh » Sun Apr 19, 2020 12:15 pm

Greetings,

Might the following link to a YouTube video be of any use to you;



TTFN

Hugh.

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