Question about 2008 Yamaha Crux

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SMELL OF GASE

When I having been practicing on my bike, I have noticed that it smells of gas when it is running. Not really raw gas but kinda of exhausty gas, it still as a bit a raw gas smell but it has an exhaust smell too. Also there is some slight smoking coming out of the exhaust pipes. Not too bad but if you look you can notice it. If I goose the throttle up it comes out more and the goes back to being light. Are these two problems related and what could be the cause?

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Sounds like your bike is running rich. Probably wouldn't hurt to have your carburetors adjusted and synchronized.

Posted on Nov 10, 2008

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Was choke all the way off start off with simple stuff check how plugs look and the difference in the 2 cylinders air filte:r dirty if. Thats all set then might be dirty carbs

Posted on May 19, 2013

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Your bike is running fine.

Posted on Dec 24, 2008

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Strong smell of gas when parked in garage


Check your oild level is fuel flowing into the oil flooding maybe does the bike have any running issues ?

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After running, with a warm engine I get a strong smell of raw fuel. Source is impossible to trace and the smell totally disappears when the bike has cooled down (approx 1hr)


i can not solve this problem yet, is your fuel leak coming from your idle screw? i have the same prob with my 2005 1000rr and today i found it fuel leaking down idle screw and behind the EGCV SERVO MOTOR, i will pull tank up and have a look and tell you what i find. If you have already found prob i would like to know, might save me some time

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I have 1991 honda cbr1000f. I note that the oil smell like gas, so i change it. but after i change i still smell gas. I wonder what happen to the piston ring or the cylinder worn.. thanks


It is not unusual for the crankcase oil to smell like gasoline. What you should take note of is if the crankcase oil level increases by any noticeable amount. This would be caused by the carburetors overflowing and allowing gasoline to run through open intake valves, into the cylinders and then past the rings. Still, this is a very unlikely scenario given the fact that your bike has a vaccuum actuated petcock.

The botttom line is this; don't worry. Small amounts of gasoline that may present in the crankcase oil is going to quickly evaporate once the engine is up to operating temperature.

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Re: the smell of gas There is no apparent leaking and the smell seems to be just as strong around the engine as by the exhaust.


thats a good question vibrations sometimes cause this if its not back firing its not the mixture buddy where is the tank breather located it could be this

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1 Answer

Overheating


If you did indeed overheat the engine to the point that is stuck, you would probably know it by the antifreeze being poured all over the ground. The bike would be really hot just sitting on it. It would smell like antifreeze and just smell hot.. I know, smell hot? but an engine that has been ran to hot has a pretty distinctive hot smell... It doesnt sound like an overheating situation if none of the above happened. A bike that is overheating will begin to loose power before it stops. LIke lacuna said, everything inside of the engine will start to expand from the heat and the piston will stick in the cylinder. Most of the time when this happens, the bike will cool off and restart. But, usually with problems. Warped or cracked head, cracked block, broken piston rings. These engines are aluminum and dont like to be overheated and warp really easy. If the engine is really hot, it will not turn over until it cools down enough. Im not saying it couldnt have overheated and then restarted without any problems, its happened before, but just not likely. But, if this is the case, take lacunas advice and change all of the fluids. Your oil will be nasty. Maybe get ahold of the previous owner and see if it has had any probems. It kinda sounds electrical to me. as long as the above overheating signs didnt happen. If you dont think it was overheating and it happens again, try to push start the bike to see if the engine turns over. even putting the bike in second or third gear just see if you can move the bike back and forth. If nothing else, you'll at least know its not locked up.

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Acceleration vibration


need to get the carbs synchronized Tom. sounds like you are still getting a rich condition in either/both one and two cylinders resulting in uneven combustion pressures. Getting your carbs sync'd should fix the vibration and the overly rich cylinders ,

Nov 10, 2008 | 2008 Beta RR 450

1 Answer

SMELL OF GAS


I have noticed that it smells of gas when it is running. Not really raw gas but kinda of exhausty gas it still as a bit a raw gas smell but it has an exhaust smell too. Also there is some slight smoking coming out of the exhaust pipes. Not too bad but if you look you can notice it. If I goose the throttle up it comes out more and the goes back to being light. Are these two problems related and what could be the cause? ounds like your bike is running rich. Probably wouldn't hurt to have your carburetors adjusted and synchronized.,,

Nov 10, 2008 | 2006 Beta RR 450

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