85 r carb help

[phantombiker]

my r was a screamer. couple weeks ago i went to ride it and it was very boggish. wouldnt hit the power band but would slightly pull the front end when i goosed it after not cracking the throttle for a couple seconds then would bog down again. rode it today and it seemed to do better but still wanted to bog a bit and wheelies were still a bit tough. does this sound like a clogged jet? if so, how do you clean said jet(s) or whole carb? im new to 2 stroke maintenance.

thx, mark

[Dave8338]

Could be a clogged jet. Could be a float valve issue. Could be a leaking crank seal. Many things could be causing this condition. How old was the pre mix? Are you using a non ethanol based fuel? Running a fuel filter? Checked peacock flow? I'm a carb freak...


Dave

[phantombiker]

Could be a clogged jet. Could be a float valve issue. Could be a leaking crank seal. Many things could be causing this condition. How old was the pre mix? Are you using a non ethanol based fuel? Running a fuel filter? Checked peacock flow? I'm a carb freak...


Dave
pre mix a month old...non ethanol....dont know. no filter but now am considering one. petcock flow i believe is good because of performance after i refused to let off the throttle. it improved a touch but not much.

thx, mark

[BOB MARLIN]

Peacock ?:wondering:D

[phantombiker]

Peacock ?:wondering:D

thats too funny...lmao

[RIDE-RED 250r]

Is it a smooth bog or blubbery with alot of smoke? That will tell you if it's a lean condition or rich respectively.

My gut tells me it's probably lean and step 1 is to remove that carb, fully disassemble it for inspection and cleaning. That pilot jet has a teeny tiny fuel passage in it and it can be easily stopped up by the smallest of random debris.

If your carb is cleaned and verified OK and the problem still persists I would be looking for an air leak elsewhere.... Starting with the intake boot, reedcage gaskets, cylinder base gasket and then if those are OK look at crank seals.

Side note: ignition troubles can mimic carb/jetting problems. Sometimes the pulse generator can get corroded as well as the magnet on the flywheel that passes by it causing it to trip. If they are found to be crusty, clean with some mild sandpaper. I have experienced this firsthand with one of my R's.

Good luck!

[phantombiker]

Is it a smooth bog or blubbery with alot of smoke? That will tell you if it's a lean condition or rich respectively.

My gut tells me it's probably lean and step 1 is to remove that carb, fully disassemble it for inspection and cleaning. That pilot jet has a teeny tiny fuel passage in it and it can be easily stopped up by the smallest of random debris.

If your carb is cleaned and verified OK and the problem still persists I would be looking for an air leak elsewhere.... Starting with the intake boot, reedcage gaskets, cylinder base gasket and then if those are OK look at crank seals.

Side note: ignition troubles can mimic carb/jetting problems. Sometimes the pulse generator can get corroded as well as the magnet on the flywheel that passes by it causing it to trip. If they are found to be crusty, clean with some mild sandpaper. I have experienced this firsthand with one of my R's.

Good luck!
thx for the info, bro. its more blubbery but performance got a bit better when i rode it the other day. still somewhat boggish though. i'll try cleaning out the carb first, though. btw, my fuel mix is 1 bottle of gold spectrum to 5 galons of go go juice. fellow at the local shop said it ok to run that mix through it. it seems to smoke as average and ran great when i started using the mix. even put a new plug in it.

thx, mark