a classic wreck scenario

DSN_KLR650
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Denis Dimick
Posts: 149
Joined: Fri Nov 26, 2004 7:18 pm

bad petcock or carb?

Post by Denis Dimick » Tue Apr 26, 2005 10:24 am

Here's the back ground: I own a 2000, currently just turned over 13,200 miles. About 4 weeks ago it noticed what "felt" like I was running out of gas. Only had about 1/4 of a tank left. From a stop sign I took off and then went into an "S" turn left then back to the right. As I left the right turn, the bike lost power. Checked everything out, it it looked like everything was OK. A few days later while doing a clover leaf turn to the right, and going up hill, the same thing happened again. Later that night, while on a straight-away, the same power lose. I've tried a higher grade of gas, 86 to 88, and it doesn't seem to change anything. This morning on my ride to work, I had to turn around and drop off my bike. With about a 1/4 tank of gas, I now need to have the choke on in order to get the bike to run under load. If I'm stopped, it runs OK, a small bit of power lose, at times, but as soon as I let the clutch out it stalls. I have ordered a petcock rebuild kit from BigCee, the one that allows you to drop the vacuum line from the Carb. Anyone seen this before? Any Idea's? Thanks, Denis

Bogdan Swider
Posts: 2759
Joined: Thu Apr 06, 2000 2:04 pm

bad petcock or carb?

Post by Bogdan Swider » Tue Apr 26, 2005 10:40 am

> > I have ordered a petcock rebuild kit from BigCee, the one that allows you > to drop the vacuum line from the Carb. > > Anyone seen this before? Any Idea's?
You might check to see if the float in your carb is set right. Bogdan

rsanders30117
Posts: 469
Joined: Mon Dec 22, 2003 11:06 am

bad petcock or carb?

Post by rsanders30117 » Tue Apr 26, 2005 10:54 am

There's never a shortage of ideas! I've had similar problems with my A14. However, I have an IMS military tank & aux. Fuel filter. A KLR is a gravity fuel system. As such, as the fuel level goes down, the available fuel pressure does also. I've had times with an old fuel filter; the available pressure isn't enough for adequate fuel flow. I now replace my fuel filter every 3-4K miles for safety. Also, it may be completely in my mind, but when low in fuel, I think it helps to vent the tank by loosening the fuel cap. Remember when the fuel is low; you only have a few inches of a low-density fluid to supply the pressure to force the fuel to the carburetor. You might have a minor restriction in your fuel line that's no problem until low on fuel. In fact, I consider the lower lobes of my IMS tank "crud pockets" because they are actually below the carburetor. Debris in these pockets stays there because they aren't going up hill to the carburetor.
--- In DSN_KLR650@yahoogroups.com, "Denis Dimick" wrote: > Here's the back ground: > > I own a 2000, currently just turned over 13,200 miles. About 4 weeks ago > it noticed what "felt" like I was running out of gas. Only had about 1/4 > of a tank left. > > From a stop sign I took off and then went into an "S" turn left then back > to the right. As I left the right turn, the bike lost power. Checked > everything out, it it looked like everything was OK. > > A few days later while doing a clover leaf turn to the right, and going up > hill, the same thing happened again. > > Later that night, while on a straight-away, the same power lose. > > I've tried a higher grade of gas, 86 to 88, and it doesn't seem to change > anything. > > This morning on my ride to work, I had to turn around and drop off my bike. > > With about a 1/4 tank of gas, I now need to have the choke on in order to > get the bike to run under load. If I'm stopped, it runs OK, a small bit of > power lose, at times, but as soon as I let the clutch out it stalls. > > I have ordered a petcock rebuild kit from BigCee, the one that allows you > to drop the vacuum line from the Carb. > > Anyone seen this before? Any Idea's? > > Thanks, > > Denis

JRC
Posts: 148
Joined: Sun May 09, 2004 10:33 am

bad petcock or carb?

Post by JRC » Tue Apr 26, 2005 12:11 pm

Sounds like float level, but could also be petcock-related. They are vacuum activated , so a leaking vacuum line will slow fuel flow. Before you buy a rebuild kit just check flow by pulling a vaccuum on the non-fuel line running from the petcock to the top front of the carb - not the fuel flow line. See if you're getting good flow. The petcock and be taken apart and reassembled without an aftermarket kit. BTW, running with the choke on is also a sympton of an air leak on the intake side of the engine.

Denis Dimick
Posts: 149
Joined: Fri Nov 26, 2004 7:18 pm

bad petcock or carb?

Post by Denis Dimick » Tue Apr 26, 2005 1:24 pm

Thanks, Looks like I need to yank the Carb and take it apart. Denis
> >> >> I have ordered a petcock rebuild kit from BigCee, the one that allows >> you >> to drop the vacuum line from the Carb. >> >> Anyone seen this before? Any Idea's? > > You might check to see if the float in your carb is set right. > > Bogdan > >

Denis Dimick
Posts: 149
Joined: Fri Nov 26, 2004 7:18 pm

bad petcock or carb?

Post by Denis Dimick » Tue Apr 26, 2005 1:26 pm

I used to run a fuel filter but found the bike didn't like it. I'm going to try to test the vaccum side of my petcock and see what happens. Then I guess it's pull the carb and clean/rebuild it. Thanks, Denis
> > > There's never a shortage of ideas! > > I've had similar problems with my A14. However, I have an IMS > military tank & aux. Fuel filter. A KLR is a gravity fuel system. > As such, as the fuel level goes down, the available fuel pressure > does also. I've had times with an old fuel filter; the available > pressure isn't enough for adequate fuel flow. I now replace my fuel > filter every 3-4K miles for safety. Also, it may be completely in my > mind, but when low in fuel, I think it helps to vent the tank by > loosening the fuel cap. Remember when the fuel is low; you only have > a few inches of a low-density fluid to supply the pressure to force > the fuel to the carburetor. You might have a minor restriction in > your fuel line that's no problem until low on fuel. > > In fact, I consider the lower lobes of my IMS tank "crud pockets" > because they are actually below the carburetor. Debris in these > pockets stays there because they aren't going up hill to the > carburetor. > > > > > > > --- In DSN_KLR650@yahoogroups.com, "Denis Dimick" wrote: >> Here's the back ground: >> >> I own a 2000, currently just turned over 13,200 miles. About 4 > weeks ago >> it noticed what "felt" like I was running out of gas. Only had > about 1/4 >> of a tank left. >> >> From a stop sign I took off and then went into an "S" turn left > then back >> to the right. As I left the right turn, the bike lost power. Checked >> everything out, it it looked like everything was OK. >> >> A few days later while doing a clover leaf turn to the right, and > going up >> hill, the same thing happened again. >> >> Later that night, while on a straight-away, the same power lose. >> >> I've tried a higher grade of gas, 86 to 88, and it doesn't seem to > change >> anything. >> >> This morning on my ride to work, I had to turn around and drop off > my bike. >> >> With about a 1/4 tank of gas, I now need to have the choke on in > order to >> get the bike to run under load. If I'm stopped, it runs OK, a small > bit of >> power lose, at times, but as soon as I let the clutch out it stalls. >> >> I have ordered a petcock rebuild kit from BigCee, the one that > allows you >> to drop the vacuum line from the Carb. >> >> Anyone seen this before? Any Idea's? >> >> Thanks, >> >> Denis > > > > > > Archive Quicksearch at: > http://www.angelfire.com/ut/moab/klr650_data_search.html > List sponsored by Dual Sport News at: www.dualsportnews.com > List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > > > Yahoo! Groups Links > > > > > > > >

Denis Dimick
Posts: 149
Joined: Fri Nov 26, 2004 7:18 pm

bad petcock or carb?

Post by Denis Dimick » Tue Apr 26, 2005 1:27 pm

Thanks, Never even thought to look for an air leak.. Denis
> > > Sounds like float level, but could also be petcock-related. They are > vacuum activated , so a leaking vacuum line will slow fuel flow. > Before you buy a rebuild kit just check flow by pulling a vaccuum on > the non-fuel line running from the petcock to the top front of the > carb - not the fuel flow line. See if you're getting good flow. The > petcock and be taken apart and reassembled without an aftermarket kit. > BTW, running with the choke on is also a sympton of an air leak on the > intake side of the engine. > > > > > > Archive Quicksearch at: > http://www.angelfire.com/ut/moab/klr650_data_search.html > List sponsored by Dual Sport News at: www.dualsportnews.com > List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > > > Yahoo! Groups Links > > > > > > > >

matteeanne@yahoo.com

a classic wreck scenario

Post by matteeanne@yahoo.com » Tue Apr 26, 2005 4:18 pm

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