2 strokes run cooler than 4 strokes, you never see a smoker exhaust glowing red, in fact they cant even get hot enough to burn off carbon

 

Viton o-ring wouldn’t last long in the header of an RFS... [emoji3062][emoji1]

 

You never burn your trews on a 2t pipe, but on a 4t!!

 

Mine used to signal it was overdue a carb strip / clean by pooping on the overrun.


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Miner
I wasn’t suggesting fitting an o ring to the header but the silencer joint. At the mid point of the exhaust system.
Anyhow I’m convinced that it won’t work.
All these things will be dealt with next week when I Rtn.
I will post the progress in due course.
Thanks for all the tips

Lark09

 

Was only joking about how hot the RFS gets compared to a two stroke... when I saw the pipe had went cherry red, I knew I had an issue... [emoji3062][emoji1][emoji1360].

 

Ok sealed the exhaust joints with JB red silicone and the popping and banging has gone.
Re cleaned the carb and added a stiffer o ring on the ac pump cam and fuel screw out to 2 turns, no bogging off the bottom now.
The plug is a bit sooty and black so I think it’s a bit rich. I guess I need to drop a main jet size or would the needle deal with it?

Thanks for the advice

Lark09

 

'A bit sooty' - either wind in fuel screw 1/4 of a turn or ride harder. If its ok otherwise dont piss about with the needle/main. Maybe you have an air filter dripping with filter oil?

Even when well set up, they will show a plug on the rich side.

 

The plug is how it was before I did anything so I’ll try weakening the fuel screw. I could ride it harder but my mates reckon I should slow down a bit at my age, cheeky bastards!

I do use filter oil but I would say not excessively so.

She seems to be running just fine, I’ll put a new plug in and go out for a good ride later then have another look and see what we have.

Thanks for the help, it’s appreciated.

Lark09

 

Well took the old girl out for a good blast today and she’s running lovely. No popping or banging on deceleration, no bogging and most definitely a bit more responsive.
I fitted a new clean plug and removed after a 1.5 hr ride it looks a little bit rich looking too me but I’m not going to touch it as she’s running so well.

Thanks for all your help, thread closed I think.

Cheers Lark09