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rockhammer
Guest
I have been riding my bike and notice the pipes bluing. Is this normal? When I bought the bike they had zero blue on them. I wonder if it is running hot? Is this some thing I should be worried about?
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usually a sign of it running too hot due to it being lean. Adding the year and make of the bike in your signature would have given me an indication of what carbs you have and what to turn to help richen the mixture...just sayin.
Yes I would be worried. It is an indicator of your bike running lean. Have you done any mods to the bike since you got it? 4 into 1?
Why oh Why do we always have to repeaatedly ask a million questions about what bike, mods, type of exhaust etc etc.
OK my WTF!!!!!!!! rant is over.
OK my WTF!!!!!!!! rant is over.
R
rockhammer
Guest
blue pipes
blue pipes
I ride 82 gs850 none modified oem pipes. I wonder if I should re check the air box seal. I recently installed a new air filter k and n. I put a very light amount of oil on it. Half the amount that came with the filter. Other than that nothing. If the air box is not sealed right could this cause the problem?
blue pipes
I ride 82 gs850 none modified oem pipes. I wonder if I should re check the air box seal. I recently installed a new air filter k and n. I put a very light amount of oil on it. Half the amount that came with the filter. Other than that nothing. If the air box is not sealed right could this cause the problem?
Yes, could be it. Are the pipes evenly blue, or is one a lot bluer than the others?
R
rockhammer
Guest
Maybe the K&N flows enough more air to make the difference. They do come very lean with stock jetting. Adjust the mixture screws correctly (highest idle method) and see if it helps.
You might need to up the jets one size or at least raise the needle a scosh..
You might need to up the jets one size or at least raise the needle a scosh..
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rockhammer
Guest
sealing box
sealing box
I did put some weather stripping on the filter housing before I put it back in. The old seal was beat up silicone falling off. But I am not sure if the weather stripping stayed on. The fit was tight and maybe toward the far end it is not sealed all the way.
sealing box
I did put some weather stripping on the filter housing before I put it back in. The old seal was beat up silicone falling off. But I am not sure if the weather stripping stayed on. The fit was tight and maybe toward the far end it is not sealed all the way.
Yes..a tightly sealed air box and non leaking orings in the intake manifolds ( carb holders to some ) will eliminate extra air and make the carbs sip fuel properly.
Float hts too low also can contribute to lean running carbs.
As for what to do. Recheck the airbox sealing. And those K&Ns dont require a heavy oiling..just light as you noted. Over oiled K&Ns will act like its choking an engine and make it too rich..as a "general" rule
Verify where the mixture screws are at. They are on top of the carb throats and at the back behind the top covers. GENTLY seat them in till the stop and then back them out 2 to 2 1/2 turns. I would reverify the float hts as well per the manuals specs.
Float hts too low also can contribute to lean running carbs.
As for what to do. Recheck the airbox sealing. And those K&Ns dont require a heavy oiling..just light as you noted. Over oiled K&Ns will act like its choking an engine and make it too rich..as a "general" rule
Verify where the mixture screws are at. They are on top of the carb throats and at the back behind the top covers. GENTLY seat them in till the stop and then back them out 2 to 2 1/2 turns. I would reverify the float hts as well per the manuals specs.
R
rockhammer
Guest
carbs
carbs
Wow this sounds a bit complicated but I do have some new vac boot rings coming tomorrow so I guess I can take it apart and do that then. I have never it done it before but I can learn. Before I put the k and n in the old filter was definatly not sealed right. The seal was beat to S and the cover seal was missing. But the bike had no bluing. I sealed the box and the filter housing, swapped out filters and now bluing. Frustrating to say the least. I thought I was improving the bike.
carbs
Wow this sounds a bit complicated but I do have some new vac boot rings coming tomorrow so I guess I can take it apart and do that then. I have never it done it before but I can learn. Before I put the k and n in the old filter was definatly not sealed right. The seal was beat to S and the cover seal was missing. But the bike had no bluing. I sealed the box and the filter housing, swapped out filters and now bluing. Frustrating to say the least. I thought I was improving the bike.
then put it backm then way it was...LOL
R
rockhammer
Guest
blue pipes
blue pipes
Here is another symptom that might be related. When the bike as at idle if I rev it the rpms drop and it seems like it wants to die. I have to save it from dieing by giving it a little help with the throttle. This does not happen when I pull up to a red light only if I rev it and then let it drop back down by it self. It does not always turn off either some times the rpms just drop real low and then it comes back up in a few seconds. Could this be related?
blue pipes
Here is another symptom that might be related. When the bike as at idle if I rev it the rpms drop and it seems like it wants to die. I have to save it from dieing by giving it a little help with the throttle. This does not happen when I pull up to a red light only if I rev it and then let it drop back down by it self. It does not always turn off either some times the rpms just drop real low and then it comes back up in a few seconds. Could this be related?
R
rockhammer
Guest
The way it was
The way it was
It would be hard to reproduce the terrible disintegrated seal that was on the housing. You are joking right? The air box was not even sealed. It was sucking in air for sure. The cover seals were totally missing.
The way it was
It would be hard to reproduce the terrible disintegrated seal that was on the housing. You are joking right? The air box was not even sealed. It was sucking in air for sure. The cover seals were totally missing.
Classic lean no roll on power symptom...you can turn the big knob in the center of the carbs to adjust the idle up a bit..should be around 1,00 to 1,200 RPMs.
But this is not the cure for the lean condition..just will help it from falling on its face as the RPMs drop.
But this is not the cure for the lean condition..just will help it from falling on its face as the RPMs drop.
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rockhammer
Guest
idle
idle
It idles now at 1400 rpms maybe 1500. How can I tel if I have fixed the problem? Running to lean? Polish the bluing off and see if the bluing comes back?
idle
It idles now at 1400 rpms maybe 1500. How can I tel if I have fixed the problem? Running to lean? Polish the bluing off and see if the bluing comes back?
Yeah was joking..It needs to be done right and then get the carbs functioning properly. Here is some good reading right from the manufacturer of the carbs.
http://www.mikuni.com/fs-tuning_guide.html
http://www.mikuni.com/fs-tuning_guide.html
BLUE JOB is an awesome bluing remover. Yes you can polish them and see if it comes back.
Set the top screws at 2 1/2 out from gently seated in and see how it reacts after that. Adjust then idle down to what I said and see what happens.
Just turn them in SLOWLY AND GENTLY till they stop without being forced. DO NOT tighten them in...when they stop on their own start counting the turns out.
Set the top screws at 2 1/2 out from gently seated in and see how it reacts after that. Adjust then idle down to what I said and see what happens.
Just turn them in SLOWLY AND GENTLY till they stop without being forced. DO NOT tighten them in...when they stop on their own start counting the turns out.
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rockhammer
Guest
Carbs
Carbs
Ok I will put in the new vac boot rings and check vac boots for pliability. I will take air box out and re check the seal on covers and filter. Check rings seal on air box side of carbs also. Then I will check carbs. I have never done it but I have looked through the tutorials here. So is this some think a newbie can do?
Carbs
Ok I will put in the new vac boot rings and check vac boots for pliability. I will take air box out and re check the seal on covers and filter. Check rings seal on air box side of carbs also. Then I will check carbs. I have never done it but I have looked through the tutorials here. So is this some think a newbie can do?