2003 warrior smoking

[ecoulter1]

Ok I have been lurking for a while just checking things out. I just picked up an 03 warrior that needed a carb rebuild and chain. It has an fmf powerbomb, silencer and K&N filter. Rebuilt the carb and put in a 45 pilot and 150 main jet due to the pipe and intake. It was running super rich since. The plug is charcoal and it smokes like a freight train. Smoke looks like burning oil but smells like raw gas. The only thing on the carb is I have a bleed type pilot jet which I am going to change to a non-bleed but it does not seem like it can cause this much smoke. Compression is 130PSI and it loses about 10% on a leakdown test which is in the green. I have adjusted the valve lash and tried just about everything. I still think the issue is carb related. I even took the airbox lid off and the mixture screw 1 turn out and still super rich. One I put the stock pilot jet in I had a bottom end dead spot with a backfire like it was lean. This is driving me crazy. With the mods a 150 should not be this bad right?

 

[YAMAHAULER]

what color smoke?

 

[ecoulter1]

It looks whitish blue like it is burning oil. It smokes more and more with throttle but smells like gas bad. I really thought it was oil but does not smell like oil burning. My buddy picked it up for me and says he put fresh gas in it but I am thinking I may need to drain that too

 

[YAMAHAULER]

is the spark plug black or oily? does the smoke stop or get less when it warms up?

 

[ecoulter1]

It does not seem to go away and the plug is a dry black almost like diesel soot

 

[Gen1Pat]

Check the oil level, make sure there is no fuel in it. I've had that prob before with several customers bikes. The carb will continueously flood and will fill the crankcase with fuel. And while its runing, that over full crankcase has to go somewhere, and it'll push past the rings and will give that whitish blue smoke you are experiancing. Worth a shot.

 

[YAMAHAULER]

when you rev it does the smoke change color ? black or brown smoke usually means running rich white or blueish white is burning oil my buddies 94 does the same thing I'll get a pic

 

[ecoulter1]

checked the oil and is still clean and ok. The smoke is whiteish barely visible at idle then you can see a trace of brown before blueish colored. When I drive it up the road it leaves a trail of smoke

 

[YAMAHAULER]

Is it smoking like this? my buddy burns about a half a quart every 4 hours and it smokes bad at start up and kinda gets better as it gets driven his has great compression too I think it's the oil ring is compressed in the piston so oil is getting by without affecting the compression

 

[YAMAHAULER]

what does the oil smell like? oily or does it have a gassy smell?

 

[ecoulter1]

It looks like that, gets worse with RPM. I may just have two problems and the gas is overpowering the oil smell because it smells rich not like burning oil

 

[ecoulter1]

The oil smells like oil. I did notice when I changed it the oil that was in it smelled a bit gassy but when I got it the needle would not seat so when you turned the gas on it would fill the bowl and run out. I have rebuilt the carb and it is not doing that anymore

 

[Gen1Pat]

Sounds like your oil rings my be on the way out. A little trick my dad used to do (back in the day) fill the cylinders with marvel myst oil, put the plugs back in, and let it sit for a couple weeks. Pull the plugs, crank the engine, install new plugs and run it. It has been known to recondition rings and stop smoking. Will smoke like a frieght train at first, because of the left over marvel, but it can work. I did it on an 86 honda trx200sx I had, worked great.

 

[YAMAHAULER]

definitely worth the try for $7 marvel mystery oil I'll have to have my buddy try it with his $7 and a couple weeks out weighs $300 top end rebuild in my opinion good advice Gen1Pat

 

[ecoulter1]

I will have to try that. My buddy said just ride it for the season but it bugs the hell out of me to ride it like that. So more than likely I can just re-ring it?

 

[Gen1Pat]

Good chance, but until you take the top end apart and mic it you wont know for sure. My rule of thumb, if there is HEALTHY crosshatch left on the walls (and no heavy or deep scoring), do a quick hone with a flex hone and rering it at the min. I've seen marvel do some pretty cool ****.

 

[ecoulter1]

Good chance, but until you take the top end apart and mic it you wont know for sure. My rule of thumb, if there is HEALTHY crosshatch left on the walls (and no heavy or deep scoring), do a quick hone with a flex hone and rering it at the min. I've seen marvel do some pretty cool ****.

Getting some marvel tomorrow. Hate to see my warrior smoking more than my sons LT80

 

[Gen1Pat]

Get 2 new plugs, too. 1 for right after you get the marvel out, and the other for the next day.

 

[ecoulter1]

will do thanks again

 

[Gen1Pat]

Did this bike sit before you got it? Those rings could be stuck or carboned up.