davva

hi guys ive recently fitted a new piston and rings on my dtr 125 and everythink was fine let it go through 2 tanks of petrol in my garden to help bed the piston in. so today i go to do the same but it just wont tick over, the engine will start but give 1 long high rev and then dies, and iff i do manage to get it to tick over and i adjust the tick over screw or touch the throttle it dies on me, i have cleaned the carb through out and checked the ful line from tank to carb. also i noticed when i turn the pertol tap to on or res it starts to come out of the overflow pipe. am i looking at a dodgy float or even a new carb, i have not changed the plug cos i bought a new 1 about a wk ago but i will do tomorrow just incase ne suggestions on sorting this would be appreciated thanx

oh well all went well and she's running again, they guy who did the rebore told me this is the last bore it could have and he doesnt know how long it will last wtf man lol, neway just need to run the fecker in now b4 i can really enjoy sliding around in the mud, in the mean time tho i will look about for a decent barrel and head or i have another dtr to pick up tomorrow and iff that doesnt run i will ust it for parts.

hi m8 found a local shop that is gonna do me a rebore and piston kit for £60 all in so hopefully it should be back up and running sumtime tomorrow as for splitting the cases to get rid of the water ill do that tomorrow also and let you know iff she runs again or not, thanx for the advice bud

well finay i managed to get the head off and to no suprise 1 of my rings have snapped and the top of my piston has more chips and gauges than a chip chip shop itself, so im gonna order a piston set asap from pjme and see how it goes, the barrel seemd fine until i noticed chips out of that too , these chips are not on the side of the barrel but at the top ( as iff the top of the piston has been hitting it ) so after i put it back together knowing it wont run i kicked it over and all the tapping noises have gone so im hoping just a piston and rings will make it run, i dont wanna buy a new head cos i heared these cost hundreds. 1 more thing is there neway i can drain the water out of the engine so i can flush it cos i got a feeling some of the rings may be in there and only cause me more probs. thanx

hi m8 yeah i checked the piston through the exhaust port, out of all the tools i have my spanner for taking the head off was missing so i couldnt take a better look at that time, im gonna go and take the head off a bit l8er and see the damage,your bike must of been pretty bad for the rings to be spat out the exhaust lol i think my rings are still there but without a closer look i cant be sure, 1 thing i have never done b4 tho is the powervalve i take it the valves are inside the round cover at the side of the head and iff i do take them out how will i know they are in the correct possition when i put it together again? i know my way around a bike but ive never touched the powervalves b4.. ive checked out thje links thanx alot m8 they really helped, im thinking of buying a piston and gasket set from pjme iff the barrel seems ok, ill take a look and let you know. thanx again mckenzie

thanx mckenzie, b4 i start to strip the powervalve i took off the front exhaust and had a quick look at the piston and found i could wobble it a little so im still thinking rings and piston or maybe both, im gonna take out the powervalve tomorrow and give it a good clean just incase, also the new spark plug i put is is sparking well so i will eliminate that for the time being and get on with the powervalve, iff it turns out to be the piston/rings were could i find 1 as no shops around my area does them and im not sure of the year so i cant order 1 either, would i also need a rebore???