hell of a time with this 89 cr125

[93blasterlover]

so i was riding in WI today and i was on the public roads full throttle and 5 gear most of the time and after about 30 min it boogged down and felt like it was going to die but it kept going it had no power at all no powerband it couldnt even get up. when it is in nutral it sounds fine. i changed the plug, same, cleaned carb check everything it is fine idk wtf is wrong??

 

[con8quest6]

Did you check your compression?

 

[jlsparky7]

Full throttle for 30 mins? Your engine is prolly shot.

 

[con8quest6]

Think he was just riding 30mins and was wot most the time.

 

[2smoker85]

might have reed problems, check reeds and compression, but if u were wot the whole time u might as well tear it down for a rebuild.

 

[93blasterlover]

it has anew top end with about 4 hours on it. compression is still fine

 

[con8quest6]

After 4hours of abuse any motor can fry in 4hours.....check what we've suggested and report back.

 

[93blasterlover]

in neutral it sounds like it is running like a champ. one thing, i have been running it pretty rich on the new top end? could this be it? also what about the power valves? how do i check those, where are they, and what do i look for?

 

[con8quest6]

Well of course it sounds fine in neutral. There's no load on the engine...

 

[93blasterlover]

im just saying. any ideas?

 

[jlsparky7]

Well of course it sounds fine in neutral. There's no load on the engine...

What he said^

Did you ride through water at all?

Double check everything and report back.

 

[con8quest6]

im just saying. any ideas?

lol we've given you some brotha, unfortunately it isn't what anyone wants to hear but that's what happens. Check these suggested things.

 

[93blasterlover]

What he said^

Did you ride through water at all?

Double check everything and report back.

Maybe 1 or two puddles that I would walk thru not about 1/4 inch deep on the road. Anyone know about powervalves?

 

[con8quest6]

I know that they don't get from working fine to totally gummed up in 30 mins of riding.

 

[2smoker85]

check ur reeds, when in neutral when u hit the throttle does it die? ur powervalve is fine, they dont go from working great to sh*t in 30 min.
have u checked for air leaks? whats ur compression at?

 

[con8quest6]

check ur reeds, when in neutral when u hit the throttle does it die? ur powervalve is fine, they dont go from working great to sh*t in 30 min.
have u checked for air leaks? whats ur compression at?

We asked all that already...he's just wishing it was something simple. Lol

 

[93blasterlover]

Haha ^^^ is right I am here all weekend with little tools so I will check reeds when I'm home. Compression is at 165

 

[Larry's Shee]

165, was that before or after your ride? Did you bore it for your rebuild? The little I know about power valves was gleaned from a site, Something mentioned about relief grinding after bore. Don't recall if brand specific. After checking reeds pull pipe and look at ex side of piston and crown.

 

[93blasterlover]

I did the test after i rode it. I tested this morning too it was at 163 so. I took it for a spin and it started to work fine but I had to go somewhere so when I came back it ran like sh*t again
Also when I rev it in nuetral all the way it like bogs and just makes this low sound like it's not revving all the way and it does it in gear also. My buddy I bought it from put the new top end on the day he sold it to me

 

[Larry's Shee]

Comepletely clean fuel system starting with the fuel tank and carb. Check tank vent and petcock. Hows air filter? New plug?