WVWWVWVWWVW
Member
- May 1, 2003
- 5
- 0
As the discription reads, I just bought a new 250 e/xc (2000) model. A scuffed piston later and here's the details:
Bike arived with so much compression i could put all of my 170lbs on the kickstarter and literally not budge the thing. Every second or third blast it would kick through the stroke but with great energy required. Once the bike started everything seemed find and the initial ride proved the thing was a rocket as I had expected. The compression felt on the kickstarter lessened progressively during the 45 minutes the bike ran.
As I started the bike the next day I noticed it starting to smoke heavily even with the carb off. My father said he could here a slight roughness in the bottom end of the rpm curve but i noticed nothing. When I came to a stop at the end of the ride the bike started surging whenever I hit the kill switch. It would almost die out and then rev back up for a second or two (Roughly 2-3 grand). Had to kick the bike into gear and drop it just to get the thing to shut off.
On the third morning the bike would not start at all. Turns out the thing for some reason ruined the stock ngk plug so I replaced it with the champion fine wireplug listed as standard for the 250.I took it out and within 3 minutes the power went flat as soon as i hit third gear and 20 seconds later the thing stops. The shop said it was detonation from bad fuel but many things concern me with their claims...
There is no reason for that much compression initially and that much decrease over that short of time (Shop assured me it was correct when I left with the piece of junk).
The roughness in the bottom end wasn't that apparent and detonation should be fairly easy to hear I'd think.
Smoking too much would mean a rich condition which wouldn't lead to piston damage.
Surging worries me about possible crankcase leaks but I think everything is going to come back to jetting with this thing...
Please give me all the advice you can on this problem. I'm sure you guys could see the problem immediately if you had been around. Please give me jetting tips... and if I have to remove the stock exhaust pipe and carburetor and replace them with a FMF Gnarly and newer version carb then just break the news to my bank acount right now before I roll the bike off a very big cliff.
If there are any other problems or suggested hop-ups for reliability with the 2000 250 e/xc please drop me a line i.e. - give me all the advice you have.
Thanks
Bike arived with so much compression i could put all of my 170lbs on the kickstarter and literally not budge the thing. Every second or third blast it would kick through the stroke but with great energy required. Once the bike started everything seemed find and the initial ride proved the thing was a rocket as I had expected. The compression felt on the kickstarter lessened progressively during the 45 minutes the bike ran.
As I started the bike the next day I noticed it starting to smoke heavily even with the carb off. My father said he could here a slight roughness in the bottom end of the rpm curve but i noticed nothing. When I came to a stop at the end of the ride the bike started surging whenever I hit the kill switch. It would almost die out and then rev back up for a second or two (Roughly 2-3 grand). Had to kick the bike into gear and drop it just to get the thing to shut off.
On the third morning the bike would not start at all. Turns out the thing for some reason ruined the stock ngk plug so I replaced it with the champion fine wireplug listed as standard for the 250.I took it out and within 3 minutes the power went flat as soon as i hit third gear and 20 seconds later the thing stops. The shop said it was detonation from bad fuel but many things concern me with their claims...
There is no reason for that much compression initially and that much decrease over that short of time (Shop assured me it was correct when I left with the piece of junk).
The roughness in the bottom end wasn't that apparent and detonation should be fairly easy to hear I'd think.
Smoking too much would mean a rich condition which wouldn't lead to piston damage.
Surging worries me about possible crankcase leaks but I think everything is going to come back to jetting with this thing...
Please give me all the advice you can on this problem. I'm sure you guys could see the problem immediately if you had been around. Please give me jetting tips... and if I have to remove the stock exhaust pipe and carburetor and replace them with a FMF Gnarly and newer version carb then just break the news to my bank acount right now before I roll the bike off a very big cliff.
If there are any other problems or suggested hop-ups for reliability with the 2000 250 e/xc please drop me a line i.e. - give me all the advice you have.
Thanks