250r -runaway (reving)

**yaegerb** · 07-22-2015, 03:27 PM

all things being equal. your main and pilot are still likely too large being that you don't have many mods on your motor which would necessitate a 48/172. I would go 45/162 and see if it runs even better.

Also consider your elevation/temp/humidity in Miami Florida which is low/hot/humid. Use smaller jets.

**shortline10** · 07-22-2015, 04:27 PM

Jimmy it sounds carburetor related to me as well , crank seals or a leaky manifold would show issues from idle to wide open .
The fix to me is either float valve related or to large on the main jet . Also make sure the slide needle isn't loose .

**3wheelrider** · 07-22-2015, 08:10 PM

[QUOTE=barnett468;1377680]You dont need to "see" or understand how it may help . . I don't "see" or understand how E=MC2 works but it still works as evidenced by several city blocks evaporated and half a million dead people.

I also don't know how brain surgery works but I'm not going to go to medical school for 12 years just to find out before i let them operate if i have an aneurysm.

From your description, your bike seems WAY too rich, not just a little rich . . Way too rich is a problem . . The most intelligent thing to do is to fix obvious problems when you see them, but you refuse to do that, so all you can do is live with your high idle problem.

I don't understand why someone would ask for help with a problem, then not take the advice given . . Anyway, I hope you get it fixed someday but it doesn't sound like it will hurt anything so I wouldn't worry about it damaging anything.

-wheres that ignore feature again???

**barnett468** · 07-22-2015, 08:17 PM

.

Originally Posted by 3wheelrider

-wheres that ignore feature again???

lol, you obviously don't need it because you are ignoring the advice you've been given which has now been repeated by two other people that happen to be very good with jetting etc also.
.

**3wheelrider** · 07-22-2015, 08:25 PM

Originally Posted by shortline10

Jimmy it sounds carburetor related to me as well , crank seals or a leaky manifold would show issues from idle to wide open .
The fix to me is either float valve related or to large on the main jet . Also make sure the slide needle isn't loose .

Thanks Mike. Yeah -I was just a little apprehensive to lean it out with that kind of symptom (reving cond.) & since that never happened before with an even larger main jet (178) in the past-
I never heard of too large a main causing that reving but now I have the same advice from more than just "1" person I feel better. I will try leaning the main after I determine the float is ok.-wont be this weekend............thanks to all.

**3wheelrider** · 07-22-2015, 08:26 PM

Originally Posted by barnett468

.

lol, you obviously don't need it because you are ignoring the advice you've been given which has now been repeated by two other people that happen to be very good with jetting etc also.
.

Dude -you just rub me the wrong way-always have with your posts. The ONLY one Ive ignored is YOU>
buzz off jerk

**barnett468** · 07-22-2015, 08:33 PM

Originally Posted by 3wheelrider

Dude -you just rub me the wrong way-always have with your posts. The ONLY one Ive ignored is YOU>
buzz off jerk

I'm confused...how can you be ignoring me if you are replying to my posts?

**3wheelrider** · 07-22-2015, 08:40 PM

Dude -STOP replying ok??? leave me alone-got it??

Ignore activated

**jb2wheels** · 07-23-2015, 08:56 AM

If this only happens after a long full throttle run, is it possible the fuel supply can't keep up and the bowl is getting drained and leaning out the mixture?

What's your supply side look like? Not sure what could restrict it if it's all stock but worth looking at. Maybe the screen in the tank or any added filters or maybe even a restriction on the cap vent hose side?

**3wheelrider** · 07-23-2015, 09:37 AM

Originally Posted by jb2wheels

If this only happens after a long full throttle run, is it possible the fuel supply can't keep up and the bowl is getting drained and leaning out the mixture?

What's your supply side look like? Not sure what could restrict it if it's all stock but worth looking at. Maybe the screen in the tank or any added filters or maybe even a restriction on the cap vent hose side?

Yeah -gonna eliminate the cap vent to see what happens. I checked floats before -gonna have another look there. Screen in tank was eliminated & inline filter is clean & flowing well. Does behave as if the carb bowl was emptying though.-thanks

Thread: 250r -runaway (reving)

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