DT125R ARCHIVE

bkray · DTR Senior Member

Engine random cut out.

plebpl · Guru

same thign happened to me, i had water in the tank

-- Edited by plebpl on Thursday 17th of February 2011 08:47:32 PM

bkray · DTR Senior Member

ah, well, i checked my bike over after writing this, and all my coolant had gone. :O just topped it up now... but, it was pretty much on the full line before i left, done about 25 miles since that and it was pretty much gone...

how did you sort it out mate?

Dingle001 · DTR Senior Member

There shouldnt be a vacuum in the tank. The filler cap has a breather hole. Check it is not blocked. Try running the bike for a while without the filler and see if that cures it. Losing water from the rad is a different problem all together. If no leaks are obvious it could be a head gasket or a leaking water pump seal. If the gearbox oil is milky then it is the seal. Hope this helps.

bkray · DTR Senior Member

Thanks mate, and as for the coolant, if i fill the coolant resevoir up or not, my Rad is always full. :/but ill have a look tomorrow. are Head gaskets or water pump seals an easy job to do or should i take it somewhere?

Seiki · Admin

Rode half the year without my res bottle on and the rad never moved lol

those 2 gaskets are easy enough to do you just have to remember to tighten the top bolts properly. I think it's criss cross

DT-R_bradders · Guru

Dingle001 wrote:

There shouldnt be a vacuum in the tank. The filler cap has a breather hole. Check it is not blocked. Try running the bike for a while without the filler and see if that cures it. Losing water from the rad is a different problem all together. If no leaks are obvious it could be a head gasket or a leaking water pump seal. If the gearbox oil is milky then it is the seal. Hope this helps.

+1 about the vacume in the tank..u dont want a vacume atall otherwise itll be sucking fuel back out the carb, check the gause filters on top of the fuel tap are clear i checked mine recently and they wer quite blocked. also check the filter in ur carb just undr the feed pipe from the tank urll see wat looks like a little plastic washer, dig it out carefully n clean that out is bound to have **** in it. aslo i cut down the logner brass pipe on my fuel tap coz it was making me go on to reserve way to early i still had **** loads of fuel wen i had to switch over, maybe ur avin the same problem???

bkray · DTR Senior Member

well, its been running fine topped up. still concerned about my coolant and the fact whenever i ride my bike now, my right toe cap has a little wet patch on it, nowhere else, but im gonna take it around a friends and we're gonna clean my carb. :)

Dingle001 · DTR Senior Member

If you've got a wet toe it can only be water pump or bottom hose I reckon. Check the drain screw is tight and that there is no leak around the water pump cover gasket. Best thing to do is take it out for a run, get it warm and then inspect with the engine running so it maintains some pressure in the system.