Rieju & GasGas Legacy Riders Club Forum

Rieju & GasGas Legacy Riders Club Forum (http://www.gasgasrider.org/forum/index.php)

- Enduro Engine - 2 stroke (http://www.gasgasrider.org/forum/forumdisplay.php?f=37)

- - Running issues (http://www.gasgasrider.org/forum/showthread.php?t=24816)

Quote:

Originally Posted by Gasser Nate (Post 192792)

Fair enough then, how/why did it blow up?

The piston looked like some one shot a 9mm through its top. It had just burned a hole into it...

But what was the reason? Always find out the why before trying to tune a mechanical issue. Otherwise you will be chasing your tail indefinitely.

Quote:

Originally Posted by Gasser Nate (Post 192792)

Fair enough then, how/why did it blow up?

Melted a hole in the piston. Found the left crank seal leaking after I did the rebuild

Quote:

Originally Posted by TGM_OFFROAD (Post 192799)

Melted a hole in the piston. Found the left crank seal leaking after I did the rebuild

But does it still act/run lean like it did when it blew up?

Quote:

Originally Posted by Zman (Post 192804)

But does it still act/run lean like it did when it blew up?

No that symptom was eliminated with the replacement of the crank seals.

The video you posted on TT (after doing the rebuild) going up the hill sure looked like the bike was going lean.

Quote:

Originally Posted by TGM_OFFROAD (Post 192773)

Hey everyone, I am trying to sort out my 18 XC 300. Long story short I had some issues with my left and right crank seals for which I ended up blowing my top end. I replaced the piston and rings, had the cylinder inspected and was told it was still in good shape. I have some running issues with it which I suspect may just be carb related, dialing in my lectron still. I can see some light through the reed pedals so I am replacing those. I have an excessive amount of carbon build up on my piston for the low hours but all other points suggest my bike is running lean. I also tested the compression but did so without the reed block in (not sure if that will lead to inaccuracy or not) and am only seeing 115psi. See video below for how the bike sounds. I have gotten some suggestions to try but looking for all the help I can get. I love the way this bike handled and the suspension is amazing after I got it valved for me. I just want the engine to run right and have the power I need

https://youtu.be/fDLVyj2sGh8

Hi i have an EC 300 2018, my bike is running like your's, i tryed cleaning up the carb e checked the reed's, with no success on solving the problem.

Did you problem got away after the crank seals replacement?

How did your problem starter? Mine started all of a sudden.

Do you have to split the cases to replace the seals?

i'm realy getting desperate with this.

Thanks mate.