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Post by gstraitman on May 20, 2008 12:27:33 GMT -5
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Post by gstraitman on May 20, 2008 12:28:27 GMT -5
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Post by jackthefuzz on May 20, 2008 12:53:15 GMT -5
thats not a vacuum hose. its either the vent or scupper line from the fuel tank or its your crank case vent tube that attaches to the valve cover and goes to your airbox. since there are hose claamps on each end I am guessing its going to be your crank case vent line.
all bets are off if your scoot has california emissions
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Post by gstraitman on May 20, 2008 13:24:21 GMT -5
thanks, I will check it. Its not the vent to the gas tank as it is there.
Would this cause a rough idle? If it has california emissions, would it say it on the data plates i.e. CARB. Mine does not
Ferd
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Post by gstraitman on May 20, 2008 13:50:01 GMT -5
checked the vent hose from the valve cover to the air box it is there. Guess I will have to take off the body panels to check the whole damn thing.
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Post by earlwb on May 20, 2008 15:25:05 GMT -5
well it could be a extra one that fell in there during assembly at the factory.
If it isn't the crankcase breather, it could be the hose coming from the carbon canister (from the fuel tank vent) going to the air cleaner.
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Post by gstraitman on May 20, 2008 21:24:47 GMT -5
The engine does not want to idle at what is a normal rpm. So I can set the rpms higher to keep from stalling but the rpms are way too high. Revs up fine under weight so its not a ignition prob. but when I stop it tries to die.
This was a sudden occurance as the bike ran well until this am. I started it this am and it tried to die while cold. I raised idle and drove around but when I got home idle was way too high. I adjust down and it dies. Bike has 250 km's. Its probably break in type problem ie air mix adjust. Or fouled plug (OEM).
However, it really 'feels' like a vacuum tube is not working but I cannot see any vacuum ports that are not in use.
I know where the air mix screw is but cannot get my hand in there. I took off several panels ( what a bitch ) then decided to not take any more panels off. My new plan is to move the fuel tank out of the way which will allow me to get to the carb mix screw more easily, where I will try an air mix screw adjustment.
The cylinder head vent to the air box is there, the carb drain line is there, there is a line from the bottom of the carb to the top of the carb ( looks like a correct vaccum line to the choke) so I think all the vacuum/fuel/vent lines are there.
I am pretty sure this line I found on top of the engine with clamps is a line left in there during the build, best guess. Looks like it was never used and has no smell or evidence of use. Maybe with the fuel tank out of the way, I can see where this vent line goes, if it is in fact used. I dont think this bike is a CARB rated bike, anyway I hope its not. I did not see any EGR connections.
Tomorrow I will do an air mix adjust, check the plug, etc. Maybe with the fuel tank out of the way, I can see where this vent line goes,
Ferd
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Post by gstraitman on May 20, 2008 21:25:40 GMT -5
did not check the carbon canister. Where is it? I did not see one today.
Ferd
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Post by gstraitman on May 20, 2008 21:55:32 GMT -5
here is a pic of the tube that looks like the one I found on the engine. What is it? What does the other end with the clamp attach to?  |
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Post by gstraitman on May 21, 2008 14:09:14 GMT -5
todays status. Started bike getting ready to take body panels off, which I dread. Started right up and after short warm up idled ok. I lowered the rpms to appropriate idle and it ran fine.
I 'fondled' the vacuum lines going to anf from the fuel system. Really dont know if that helped but I noticed that the 'fuel filter' only has a few drops in the bottom of it. It lies horizontally so unless I am mistaken its mostly air and a few drops at the bottom. This cannot be normal?, is it?
I wonder if the vacuum driven fuel petcock is not allowing the full fuel flow? Dont know how that could affect the slow idle but I guess it could.
Can someone check to see if fuel filter should be 'full'. My lines run lower than the tank them are routed upwards to the level of the carb.
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Post by earlwb on May 21, 2008 14:31:11 GMT -5
it is easy enough to bypass the vacuum cutoff switch to see if it is the culprit.
The fuel filters have been known to be too restrictive and not let fuel flow through them under gravity pressure. So yes the filter could be bad.
That rubber tube you got there is for something that is not on your scooter. I wouldn't worry about it any. it is just extra for some emissions feature you don't have.
Now if the right angle nipple as shown in the pic on top of the valve cover doesn't have a rubber tube going to it, you can use that extra one there.
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Post by gstraitman on May 22, 2008 7:26:29 GMT -5
I agree with you. The extra vent hose was just left there in manufacture. All other hoses look connected.
Thanks Ferd
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