klr coolant leak

[Hall Smith]

Yep, I'm new here and I've already got a problem. 98 KLR, 3000mi., Supertrapp IDS minus 2 disks and stage 1 jetting. Bike runs awesome, but dies after 30min or so of high speed operation. Runs awesome again (for a while) after a few hours of cool down. Suggestions???? Thanks in advance, Hall

[monahanwb@yahoo.com]

--- In DSN_klr650@y..., "Hall Smith" wrote:

> Bike runs awesome, but dies after 30min or so of high speed

operation. Runs

> awesome again (for a while) after a few hours of cool down.

One possibility: Possible kinked vacuum hose leading to the petcock. Try a little re- routing to avoid turns in it or stiffen it up with stiffer hose or a piece of duct tape. Also possible clogged vent in gas tank. Not to worry, this is a common KLR idiosyncrasy. Once I straightened out my vacuum hose at about 3000 miles, it hasn't pulled this one on me since (now at 23,000).

[S2Mumford@aol.com]

If this happened in wet weather or on a wet surface, there is a common fix of putting a "t" in the carb vent tube. If that booger gets a drop of water in the bottom in its bone stock form, your engine will die. CA Stu --- In DSN_klr650@y..., monahanwb@y... wrote: > --- In DSN_klr650@y..., "Hall Smith" wrote: > > Bike runs awesome, but dies after 30min or so of high speed > operation. Runs > > awesome again (for a while) after a few hours of cool down. > > > One possibility: > > Possible kinked vacuum hose leading to the petcock. Try a little re- > routing to avoid turns in it or stiffen it up with stiffer hose or a > piece of duct tape. > > Also possible clogged vent in gas tank. Not to worry, this is a > common KLR idiosyncrasy. Once I straightened out my vacuum hose at > about 3000 miles, it hasn't pulled this one on me since (now at > 23,000).

[David Kelly]

"Susan Moorhead" writes:

> Jim, > > What type of coolant should be used? The coolant that came in my KLX is > green, always thought it was regular ethylene glycol (sp). Why would auto > coolant cause water pump failure? Not doubting your word, just need the > facts. Want to flush the cooling system on the KLX before my trip next > month. Thanks for any info.

There is absolutely nothing wrong with using automotive antifreeze in your motorcycle. But just as you are shopping for antifreeze for your car, you should shop for the bike. Doubt there is a recent model car on the road today without aluminum in its head, water pump, or radiator. So you should make sure the antifreeze is safe for aluminum. Which means that it should be silicate free and phosphate free. And that's exactly what the bike needs too. I'm running Texaco's antifreeze rated to GM's DexCool specs in everything these days. KLX650R, PC800, Toyota, etc. But not the lawn mower as its air cooled. -- David Kelly N4HHE, dkelly@... ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system.