lethal dose
Well-Known Member
I just used the proper size fuel line. Call Sean... he knows exact lengths. My theory is that it creates a pressure issue inside the carb when wind makes its way down the vent elbows at speed.
BIG THANKS to Dragmaxster! Still need some help
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Dragmaxster
Well-Known Member
TB i thought i saw yours sitting in crate in your garage?
Dragmaxster
Well-Known Member
No, there are two (one is shorter than the other) that go to each side and up to the hole on the sides of the airbox.
Dragmaxster
Well-Known Member
Look at step 5 and step 9--- see how close the bottom 2 hoses are to being kinked? If not routed right they get squeezed between the airbox and the frame too.
http://v4musclebike.com/forums/showthread.php?t=14949
http://v4musclebike.com/forums/showthread.php?t=14949
davesax36
Well-Known Member
You got a link? I have the same bog in all gears so it doesn't seem speed dependent. I get that there might be a venturi of some sort like a stack on a smoker. Makes me wonder. I'd like to read about it, though.
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I see that two go to the airbox but where do the other two go? Do the tie into the lines that go to the airbox?
Dragmaxster
Well-Known Member
If you look at the red arrows on each side of the airbox on step 5 there are 2 lines on each side- the hoses plug onto a metal piece that screws to the airbox.
I had pics of them and just sold them to someone in maine last week. Sorry.
Dragmaxster
Well-Known Member
Here's 4 but you would still need the metal piece that goes to the airbox-probably cheaper to just buy the hose at autozone though.
http://www.ebay.com/itm/YAMAHA-VMAX...ash=item338d43f757:g:PXQAAOxyBjBTRcLj&vxp=mtr
http://www.ebay.com/itm/YAMAHA-VMAX...ash=item338d43f757:g:PXQAAOxyBjBTRcLj&vxp=mtr
Is that just regular fuel line and do you happen to know the size? I might have something here at work that I can use.
Dragmaxster
Well-Known Member
I'm not sure, someone will tell you.
davesax36
Well-Known Member
It's pretty thin walled tubing. I think it's 5/16". If not, it's 1/4"
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Sent from my iPad using Tapatalk
Ok now I can see it, had to really look to see them both. I'm at work now and didn't ride because of the rear brake issue but tomorrow afternoon ill probably be able to mess with it.
Dragmaxster
Well-Known Member
It's metric. 8mm- i think.
Dragmaxster
Well-Known Member
Traumahawk
Well-Known Member
I will have to post the conversation....I cant post a link to the VMOA chat.
Gentlemen
Help me out. I have an 89 Max with 46k miles, stage 7 jet kit and supertrapps. It idols, accelerates and cruises perfect. However at 70mph or above when I put my feet on hi-way foots pegs mounted on the Yamaha case guards it seems to surge. Put feet back on the pegs no surge. Has anyone run into this. Any suggestions?
Thanks much,
Buffalobob
Bob, are you using the float bowl vent tubes and if so where do you have the oulets mounted?
maleko89
This can be vexing. Have you made sure your fluid level in the carb bowls is correct?
Magicpig
2006 and 2010 vmax
Old problem. If you don't remove tubes from vents when doing stage 7, you need to mount them near original position when attached to airbox.
Don Smith
So basically Don "oldman" Smith and Mark (Maleko89) Hit the nail on the head right off the bat.
davesax36
Well-Known Member
I'll pick up some hose today. I just wonder where mine went...
We have used hoses & metal airbox connections at BRC.
tugla
Well-Known Member
after hoses id make sure your wet float level is correct and i might have missed what needles are you running?...they might need a shim to the richer side...i had similar issue on one of my bikes and that fixed her right up....
natedog650
Active Member
I'm a nube here but have you check your tank & fuel filter for rust build up? I was having some stumbling much worse than yours and when I pulled the fuel filter it was filled with rust and the tank had been left half full at best by the PO. Cleaned and sealed it and seems to be running fine now.
