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Post Info TOPIC: Piston ring or rings ???


Do not trust me or buy from me

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Piston ring or rings ???
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this seems a ovi question but new too all this the other day i took the power valve out of my bike to clean looking futher in i could see the piston and it looked like it only had one piston ring top one ? bottom missing the bike starts and rides bogs at low revs slow untill his 7 and a half ????



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james


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1990dtr wrote:

this seems a ovi question but new too all this the other day i took the power valve out of my bike to clean looking futher in i could see the piston and it looked like it only had one piston ring top one ? bottom missing the bike starts and rides bogs at low revs slow untill his 7 and a half ????


 Check that out man.. If you say that your bike bogs, that could be caused by the missing ring. If it's a one ring piston it's ok (besides that one piston rings are not used on dtr's)  but if it's a 2 rings piston and the bottom one it's missing causes de-compression.. And maybe your bike needs that missing compression until  7,5k rpm. But check you sparkplug and check the colour of the pole.. And your carburetor.. Because that could be a simple bad tuning of the carburetor..



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oki well when i looked it had two groves the same but just that one piston and on new kits it comes with two ? yeah iv cleaned the carb ect but like you said could need tuning witch was not done by me does any one know the factory setting for the carb ?

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james


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1990dtr wrote:

oki well when i looked it had two groves the same but just that one piston and on new kits it comes with two ? yeah iv cleaned the carb ect but like you said could need tuning witch was not done by me does any one know the factory setting for the carb ?


 to tune up a carb you need to know how to man, it's hard to explain by message. you have to tune up the air/gasoline mixture



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Do not trust me or buy from me

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is the a certain amout of turns rct or do you know were i can find the info

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james


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mixture screw, 1.5 turns out, air screw on older models is 1.25-1.5 turns out, newer ones are 0.25 turns out, float height between 15.5m and 16.5mm. Standard main jet is #210

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