Author Topic: rejet problem  (Read 715 times)

Offline lnb001

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rejet problem
« on: March 14, 2008, 11:11:03 PM »
So I fully rejetted my carbs, 22.5 mains, 65 mids, and 147.5 pilots with 2 washers, put a K&N lunchbox air filter on, and a new jardine exhaust.  After all was said and done i started up my bike and got that nice deep sound, however I noticed the engine started smoking.  I turned it off and felt the exhaust pipes up near the headers and noticed they were hot to the touch.  I don't know if this is normal or not for them to be that hot that fast?  The bike was on for literally 1 minute.  When I was reconnecting hoses and such to the carbs I was a little confused on what went where.  I have the petcock connected correctly to the fuel valve and the overflow hose connected to the middle of the tank.  I am also pretty sure about the hose that connects to the bottom of the carb assembly.  I have the breather filter connected to the hose that previously went into the air box.  What currently is not connected to something are the hoses on the upper to openings in the carb assembly and the hose that went into the bottom of the airbox.  If anybody could provide a diagram as to what goes where or offer any advice that would help that would be greatly appreciated!  Oh yea, minor detail, I did all this on an '04 GS500f if that helps.  Thanks!

-Lucas

Offline makaveli2502

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Re: rejet problem
« Reply #1 on: March 14, 2008, 11:19:29 PM »
are you talking about this?



Offline lnb001

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Re: rejet problem
« Reply #2 on: March 14, 2008, 11:43:17 PM »
yea i think i have all that worked out, what i am confused on is the junction in the upper part of the picture in the middle, it is sort of a T junction where there is a connection between both carbs then an outlet.  I believe there are three of these junction and one of them (the one on the very bottom) I have connected to the fuel valve.  The middle junction i just have a hose connected to and the very top junction i have nothing connected to.  Thanks!

-Lucas

Offline ohgood

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Re: rejet problem
« Reply #3 on: March 14, 2008, 11:44:56 PM »
hot to the touch in a minute, AT the header, ya. red hot, no, shouldn't be.

the smoke was likely from whatever was on the headers assuming they were new, and never run before. maybe rust preventer, paint, whatever.

you didn't specify where the smoke came from, so it's hard to say what else is going on. :)
« Last Edit: March 14, 2008, 11:46:18 PM by ohgood »


 tt_four: "and believe me, BMW motorcycles are 50% metal, rubber and plastic, and 50% useless

Offline lnb001

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Re: rejet problem
« Reply #4 on: March 14, 2008, 11:54:18 PM »
Yea, it was definitely wasn't read hot, and they are brand new headers (new Jardine hehe).  And now that you mention it, it did seem like the smoke was coming from the headers.  I will start my bike up tomorrow and recheck.  As for my hose problem, anybody else want to chime in?  Thanks a bunch.

-Lucas

Offline ohgood

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Re: rejet problem
« Reply #5 on: March 15, 2008, 01:22:34 AM »
i haven't touched one of them new fangled 3 stage carbs yet (relax everyone, your newer bikes are safe!) so no comment on routing.

the headers near the engine will burn the shaZam! out of your skin, you don't even have to touch it. be careful !

wayyyy back there on the final pipe/can/silencer/whatever it should be warm, but not unsafe. my v&h is cool to the touch after 45 seconds of being turned off. :)


 tt_four: "and believe me, BMW motorcycles are 50% metal, rubber and plastic, and 50% useless

Offline lamoun

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Re: rejet problem
« Reply #6 on: March 15, 2008, 12:10:15 PM »
yea i think i have all that worked out, what i am confused on is the junction in the upper part of the picture in the middle, it is sort of a T junction where there is a connection between both carbs then an outlet.  I believe there are three of these junction and one of them (the one on the very bottom) I have connected to the fuel valve.  The middle junction i just have a hose connected to and the very top junction i have nothing connected to.  Thanks!

-Lucas

The upper junction on my carbs ( '06 ) have a filter connected.
The others is just as you say:
The middle is just for overflow
And the lower goes to the fuel valve.