the wind cries mary

[KEN TRULL]

The other day I posted about stalling in the rain and re-routing all the tubes out the side of the bike to solve the problem quickly. I suspected the gas tank breather as the culprit based on earlier list discussions. The tank breather WAS NOT the culprit. It is/was the clear tube that comes directly from the upper left side of the carburetor. It is a vacuum line of some sort. Want to prove it? Let the bike idle and put your finger over the end of the tube and watch the engine stall almost immediately. What is the purpose of that line? It is totally unfiltered unless the filter is inside the carb.(unlikely) Seems like it would suck any kind of small grit and grime right inside the carb. Hook a brother up wit' some learnin'. Ken Trull BR549-A14 Greenbough, AL

[Jim Hyman]

Ken, It sounds like you're describing the vacuum line that connects to the fuel petcock. This petcock is vacuum operated. When there is no vacuum in the carb, the fuel flow through the petcock is turned off, even though the petcock is in the ON or RESERVE position. There is vacuum in this line whenever the KLR is cranking over or running. If the clear plastic line is thin walled and pinches or collapses, this will shut off the fuel flow to the carb & result in stalling. BTW, the stock vacuum line is moderately thick rubber & not clear. The filtering for this line is performed by the carb's air fileter. I don't seel why rainy weather would have any effect on this vacuum line. KLRs have been known to randomly get temporary fuel starvation symptoms that usually clear up by themseleves. Professor A9 Federal Way, WA. [USA] --------------------------- -- KEN TRULL wrote:

> The other day I posted about stalling in the rain and > re-routing all the tubes out the side of the bike to > solve the problem quickly. I suspected the gas tank > breather as the culprit based on earlier list discussions. > The tank breather WAS NOT the culprit. It is/was the > clear tube that comes directly from the upper left side > of the carburetor. > It is a vacuum line of some sort. Want to prove it? Let > the bike idle and put your finger over the end of the tube > and watch the engine stall almost immediately. > > What is the purpose of that line? It is totally unfiltered > unless the filter is inside the carb.(unlikely) Seems like > it would suck any kind of small grit and grime right inside > the carb. > > Hook a brother up wit' some learnin'. > > Ken Trull > BR549-A14 > Greenbough, AL

[Chris Rivers]

My KLR seems to respond much differently depending on what kind of air I'm riding in.  I weigh about 170 and at 90 mph my KLR650 sometimes feels like its going to blow apart ( Captain, she can't take much more!!) and sometimes she's as smooth as silk.

 

Renn

A15