101 carb questions

[declan]

@spookdog wasn't the 26mm pre 88? I have a Kehin 26 on the dtx bike I'm building

[declan]

Are you sure your carb is genuine? Can you show me a picture

[SpookDog]

@declan @declan @declan
VM26SS (roundslide) was used in early bikes, I think till 97 but ain’t sure...

My carbs’ a 28mm Mikuni flatslide. It’s genuine. It has the heater pipes...

A 2004 onwards DTX125 should have a 28mm Mikuni TM as well. According to my Haynes...

[declan]

@spookdog that can't be right you rarely see a 26mm dt plus mine is a 1990 and was flatslide,180 main seems very lean I'm 210 on my 28,it's not burning gearbox oil is It?

[markus.w]

@spookdog the 26mm round slide was used in the very early 88 models only.

[SpookDog]

Cheers guys, it’s confusing cause it says vm26ss 3rn1 onwards in the Haynes. I’m guessing they messed it up. It’s been throwing a spanner in for a while now! 🤨

I’m guessing the 3rn1 onwards should read tm28? Did the TZR use a 26 or 28?

[declan]

@spookdog I think 26

[SpookDog]

@declan
I only ask cause the Haynes says the TZR uses a 180 main jet. I’m wondering if a previous owner thought a ‘TZR’ main jet would be a good thing...

I know the engine is good. I’m gonna put the 210 main and .225 pilot in all according to specs. Q2 needle valve and 5j25 needle. Make it standard for a TM28SS carb...
If I still have problems with anything above 1/2 throttle I’ll adjust the needle height. I don’t know what else to do. I’ve swapped out the reeds and cage to no improvement...
Wish me luck

Any opinions or advice is welcome...

[declan]

@spookdog check your ignition circuit the whole thing from killswitcg to spark plug look for any corrosion or breaks in wires

[SpookDog]

Anyone good at reading plugs?...

[SpookDog]

The centre is usually a good colour, but it is only the very centre, electrode, ect. The ‘outer ring’ is always black and wet. No matter how it’s ridden. I removed the bottle top plug I have on the carb to filter rubber, to let more air in and the engine ran a lot better. Not proper but better...