I am looking for a little advice oh wise Gas Gas forum members. I have been lurking on the forum for quite a period of time and trying to piece together information to fix the long list of issues with my EC300.
So a little background, bought the EC a little over a year ago, decided I fancied my first 2-stroke enduro bike. Rode a friends and fell in love with the GG, so got my own. Unfortunately for me the previous owner of my bike did not seem to have had the enthusiasm that I have for the bike. On my first proper ride the bike went pop- cracked block caused it to spew out all its water and melt the block the piston- you name it, it was buggered.
So I have thrown a hell of a load of money at it fixing that- renewed every bearing, crank, piston, new barrel, new head, basically everything new except the actual gears. At a cost of nearly ?2000- I figured it would be worth it because I would essentially have a zero hour bike, all be it with knackered body panels. (At least that way I feel less bad when I clip trees.)
Anyway I have then spent the last 9 months chasing issues around the bike, including the jetting- to start with it was ok- not great but rideable. Plug chop suggested it was a little on the rich side. But I figured that it probably wasnt a true reflection of the jetting as the exhaust was looking seriously tired, and I was getting a lot of exhaust leaking through the PV breathers. This situation just got worse as time went on, with the bike getting to a point where it wouldn't rev out and was slow as all hell.
So I purchased a DEP silencer, and replaced all the PV bearings- silencer looks fantastic and sounds fantastic. (The front pipe is the standard GG stainless item- nearly new so didn't replace). The only issue I have now is that the bike it running on the lean side- plug chop shows no colour on the centre electrode insulation- with the ground electrode looking slightly on the white side
So I dropped the needle clip one down, back to the centre of the needle (N1ec), which merely made the bottom end run badly. It now really stutters at low throttle, particularly pulling away, but as it revs out it clears up and takes off, it really revs out, but it what I would describe as slightly zingy. Pulled the plug, still white with no real change in appearance
I will also add that the bike has very low hours approx 40, and before doing this jetting work I have inspected the entire engine, the compression is good, the air filter was brand new, reeds look as new (again only 40 hours).
So oh wise ones, please help- what do I need to change to get the bike back to a ridable state, where I don't need to worry about it going bang again- I cant afford to fully rebuild her twice in two years.
Summary:
2002 Gas Gas EC300
Boyesen Carbon Reeds
DEP silencer
Standard GG stainless front pipe
35 pilot
178 main
N7 slide
N1ec needle
BR8eg plug
I hope this is enough info (sorry if it is a little too much of a life story but every little helps). All suggestions and help will be greatly appreciated
So a little background, bought the EC a little over a year ago, decided I fancied my first 2-stroke enduro bike. Rode a friends and fell in love with the GG, so got my own. Unfortunately for me the previous owner of my bike did not seem to have had the enthusiasm that I have for the bike. On my first proper ride the bike went pop- cracked block caused it to spew out all its water and melt the block the piston- you name it, it was buggered.
So I have thrown a hell of a load of money at it fixing that- renewed every bearing, crank, piston, new barrel, new head, basically everything new except the actual gears. At a cost of nearly ?2000- I figured it would be worth it because I would essentially have a zero hour bike, all be it with knackered body panels. (At least that way I feel less bad when I clip trees.)
Anyway I have then spent the last 9 months chasing issues around the bike, including the jetting- to start with it was ok- not great but rideable. Plug chop suggested it was a little on the rich side. But I figured that it probably wasnt a true reflection of the jetting as the exhaust was looking seriously tired, and I was getting a lot of exhaust leaking through the PV breathers. This situation just got worse as time went on, with the bike getting to a point where it wouldn't rev out and was slow as all hell.
So I purchased a DEP silencer, and replaced all the PV bearings- silencer looks fantastic and sounds fantastic. (The front pipe is the standard GG stainless item- nearly new so didn't replace). The only issue I have now is that the bike it running on the lean side- plug chop shows no colour on the centre electrode insulation- with the ground electrode looking slightly on the white side
So I dropped the needle clip one down, back to the centre of the needle (N1ec), which merely made the bottom end run badly. It now really stutters at low throttle, particularly pulling away, but as it revs out it clears up and takes off, it really revs out, but it what I would describe as slightly zingy. Pulled the plug, still white with no real change in appearance
I will also add that the bike has very low hours approx 40, and before doing this jetting work I have inspected the entire engine, the compression is good, the air filter was brand new, reeds look as new (again only 40 hours).
So oh wise ones, please help- what do I need to change to get the bike back to a ridable state, where I don't need to worry about it going bang again- I cant afford to fully rebuild her twice in two years.
Summary:
2002 Gas Gas EC300
Boyesen Carbon Reeds
DEP silencer
Standard GG stainless front pipe
35 pilot
178 main
N7 slide
N1ec needle
BR8eg plug
I hope this is enough info (sorry if it is a little too much of a life story but every little helps). All suggestions and help will be greatly appreciated
