HELP!!! rejetted carbs with dynojets and now oil is comming up throug my rear carb and I dont mean a little oil..its a lot) plus its smokin like hell!!!!!. After I rejetted I started it up, rode fine for about 200 feet..then all hades happened....blowed oil up in breather box, started smoking, then motor quite..afraid to try to restart untill I get some advise...THANKS FOR ANY HELP!!!!!Just in case yor wondering..I have Diamond G intake, K&N air filter, and NYROC's exhaust mods.136 rear, 132 front..mains in 4th notch.

 

The only thing that makes sense is that somehow you messed up and don't have one of the float needles seating properly and have dumped a bunch of fuel through the carb, cylinder and into the crankcase. Surprised it didn't hydrolock if this is what happened. From what other members have posted a crankcase that is overfull will do just exactly what you are seeing.
Hmm, you say the oil is coming up through the carb and not the breather tube?

 

Been There ... Done that .......


If you check the oil level, you will see that it is way to full....... and smells like gasoline .

If that is true .... and I would bet much money that it is ..... you need to change the oil before you ride it .......... Will likely need to clean the air filter also.....

That two hundred feet was the distance that it took to get up to about 40 mph or so [img]i/expressions/face-icon-small-smile.gif[/img]


now ... how did the gasoline get into the crankcase ??

 

You got the same setup as mine and i never had oil in my airbox,sounds like pro rider might be right goodluck.

 

Gotta agree with V forcer, had this same problem on a couple 650's I've worked on, the owners overfilled the engine oil when they changed it. This will cause the oil to come up through the crankcase breather tube which vents into the airbox and will be sucked into the engine causing it to smoke. Another thing you may want to check is to make sure the float is shutting off the gas into the carb, if not it could be draining into the cylinder and into the crankcase raising the oil level enuf to cause the same problem of sucking oil into the airbox.

 

Thanks a lot guys....yea the more I rode it, the less it smoked, and ran better and better...now it runs like a top...bike did sit for an extented time with stop **** on before I changed nthe jets...also I changed my oil[img]i/expressions/face-icon-small-smile.gif[/img]