have a problem with me dtr 125. can anyone help

[gordy1234]

Hi everyone. I am having some bother with my dtr. I got the bike a while ago but the engine had gone, i was on this site asking if a 05 barrel would fit a 92 model. (thanks for the help it does) I put it on and built the bike up. I got it started after a wee bit and now it starts fine even from cold. But the things is its seems to have no power high up the revs. 1st and 2nd gear are alot stronger then all the rest but they still dont feel right. you put the bike in 3rd and it doesnt pull and if you try using 4th 5th and 6 it does nothing really. Any ideas what the problem could be.
forgot to say the chain is at the shortest ajustment and even at that its solid before you sit on it. hope you guys can help. Thanks.

[P.addy]

shouldnt be solid... should have an inch - inch 1/2 movement.

Whats your spark plug look like after a hard run? what colour is it, just pop it out and have a look?

[gordy1234]

[quote="padwaxk88"]shouldnt be solid... should have an inch - inch 1/2 movement.

Whats your spark plug look like after a hard run? what colour is it, just pop it out and have a look?[/quote

Hi there just run out and took it out there the now. it looks black and theres a wee bit of oil on the threads.

i need to get an extra wee bit of chain then. would that be doing anything bad to it??

[P.addy]

Probably giving the chain a hard time, which could give the engine and sprockets a hard time too..

The plug being like that could be running quite rich.. i'd wait for the 2 stroke geniuses to post, but i'd say mixture setting?

[reggie]

sounds rich how manny miles it done could need to clean the filter

[gordy1234]

[gordy1234]

[reggie]

oh the person that had mine befor me never cleaned the air filter in 12000 miles chokeing the motor check the jets in the carb that none have come lose

[gordy1234]

[P.addy]

[gordy1234]

Hi there when i done the rebuild i changed the filter anyway so i know its not that. how do i check the jets??[/quote]

take the carb apart and just check the jet is still screwed in, had a mini moto that they jet fell out of, took ages to figure it out!

The chain, if its on the most slack setting i'd say either the sprockets arent standard or the chain isnt the correct length.[/quote]



i just phoned a friend there and he has a couple of links and the magic link too so that sound cover that. well wen i 1st started the bike its was not bolted down fully so was moving about a wee bit so i will have a look and see if its moved thanks for the help again.

[P.addy]

[gordy1234]

im not sure you can add links to the chain...its usually a whole chain..[/quote]

well al maybe give it a try if not al just get 1 they dont seem hard to come by. thanks

[reggie]

you can but you would have to have 2 joining links
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[gordy1234]