TRX250R.ORG
Workshop => Carburetor, Intake, and Exhaust => Topic started by: brad luna on April 09, 2020, 12:54:36 PM
-
I was running my R and it was running pretty good. Brought it back to the house adjusted the air screw a quarter turn, kicked it over and it was smoking alot. Will not idle well, smokes a lot at idle have to rev it up to keep it running, when it is revved up it smokes up my front yard . any ideas what may have happened? It started raining so I put it up and I'm going to try to figure out what is wrong with it today.
-
My first thought is the clutch side crank seal went out on you. All that smoke is from your engine burning the transmission oil. Look at the transmission breather tube. Is oil coming out of it? Check your transmission oil level. Is it low?
Loren
-
I will check all that when I get off work. Is that seal an easy fix or a pain in the a** to fix?
The smoke was a blue tint does that mean anything?
-
Blue is typical for 2 strokes, but the amount you are describing is not typical. Adjusting the air screw in a quarter turn should not make that much of a difference. How many turns out is it at?
It could be sucking in oil from the main as normal suggested. How does the plug look?
-
I had to go run errands yesterday when I got off work so didnt get a chance to look at my R.
The air screw is a little over one and a half turns out.
I will mess with it over the weekend and I'm sure I will have questions come monday morning.
thanks for all the advice, I have never taken the left and right cases off before so this all new for me.
I did just do the top end on it, hopefully nothing was messed up from this seal going out.
-
already have a question . Will I have to remove the motor from the frame to change the seals??
-
No you can leave it in.
-
good glad to hear that.
could u tell me what all I will need to fix that seal. I'm guessing left case gasket and crankshaft oil seal. will I need front sprocket seal? Shifter shaft oil seal? fly wheel puller? fly wheel holder?
-
You will need a flywheel puller and a seal if you are going to change the stator side seal. For the clutch side you will need a clutch cover gasket, a clutch side crank seal, something to hold the clutch basket, and hand tools. An impact is almost a necessity if you don't have a clutch basket holding tool. You should only need the stator cover gasket, clutch cover gasket, and the two seals to get the job done. Oh and oil!
-
thank you
-
No problem.
-
You'll also need a penny to put between the gears to lock them up so you can remove the hardware holding the clutch components together. You can use any year penny but I like pre 1984 pennies since there solid copper.
-
You'll also need a penny to put between the gears to lock them up so you can remove the hardware holding the clutch components together. You can use any year penny but I like pre 1984 pennies since there solid copper.
Or just have a mighty kungfu grip like I do!
-
These guys are giving good tips.
Left side does not have oil in it. If it is sucking oil, it would be from the clutch side...or from center case gasket/case problem. I would suggest a leak down test before you start tearing into it. There was a post a while back on how to build one using parts from a typical hardware store. That being said it is good to get familiar with the motor and pull covers to inspect for preventative maintenance.
If you go into the clutch side it would be good to inspect the clutch, counter balancer and the water pump.
As mentioned a fly wheel puller is an essential tool. You can use an impact to remove the crank and clutch center hub nuts. Before I had impacts I purchased a motion pro clutch holding tool. It will hold the clutch and flywheel. I have seen the penny trick, but I have never used it. Didn't know about that when I bought the tool 25 years ago.
Good luck, ask lots of questions and have fun.
Best Regards
-Jason
-
Since you just did a top end, I would suggest starting there. Perhaps a ring problem ? A leak test is the best place to start, and go from there.
desertR