overheating after freezing weather

[Tim & Missy]

I just installed my water pump seal and the oil seal behind it, but I ran into a snag. The bike doesn’t appear to be circulating the coolant and starts to overheat if I don’t stop and let it cool. I’m not sure what the problem is. Does any one have some suggestions why this might be. It didn’t overheat before I changed the seals so it has to be something I did wrong. HELP!!

 

Thanks

Timan

 

[Gary Mack]

I've seen a couple of guys asking about overheating.My A16 got hotter than I thought it would. I added oil to beyond the top mark and it runs cooler.This is my basis for doing that http://www.dualsportnews.com/oilchain.html Comments ? [Non-text portions of this message have been removed]

[Volker Traudt]

I noticed that the engine on my 1987 KLR 250 is extremely overheating. In the past, the temp gauge stayed in middle in almost all driving situations, the fan only came on during slow steep first gear narrow trial riding. After I had the cylinder head off to replace a bent valve (not 100% sure if it first occurred right after it), I noticed that the engine gets really hot. I replaced all fluids (oil and coolant), filled up the radiator to max, and the overflow cannister. Stilll overheating. I first thought this is due to the fan relay that went bad ($80), so I replaced it with a manual switch, and always turn the fan on. Yesterday, the engine got so hot during very careful riding (not more than 4000 rpm, no acceleration), that the gauge went past red way over the letter "H" (fan running all the time). I noticed that the radiator cap is cool to the touch, which leads me to believe, that the coolant is not circulating. If the group agreas, is there an easy way to check the circulation? Could it be blocked cooling channel (from when I took the head off)? Could it be the water pump being blocked or broken? Any suggestions, comments are welcome. Thanks. Volker

[Fred Hink]

Think you might have got the thermostat upside down? Fred http://www.arrowheadmotorsports.com http://www.angelfire.com/ut/moab/cmc.html

----- Original Message ----- From: "Volker Traudt" To: DSN_klr650@yahoogroups.com> Sent: Thursday, September 02, 2004 7:50 AM Subject: [DSN_klr650] Overheating > I noticed that the engine on my 1987 KLR 250 is extremely overheating. > > After I had the cylinder head off to replace a bent valve (not 100% > sure if it first occurred right after it), I noticed that the engine > gets really hot. > > I noticed that the > radiator cap is cool to the touch, which leads me to believe, that > the coolant is not circulating.

[Volker Traudt]

If you are referring to the temp sensor that is mounted next to the spark plug in the cylinder: How can it be installed upside down? I don't think I ever removed it, but would like to check. If you are referring to the temp sensor that is mounted on the bottom right side of the radiator: Can it be installed wrong? I did not take this one out either, just found that by putting on of the leads against ground that the fan turns on (which it did not, even when the engine temp gauge was in the red). If neither is applicable: Where is the thermostat that you are referring to located, and how can I check the right installed position? Thanks. Volker -----Original Message----- From: moabmc@... [mailto:moabmc@...] Sent: Thursday, September 02, 2004 10:09 AM To: DSN_klr650@yahoogroups.com; Volker Traudt Subject: Re: [DSN_klr650] Overheating Think you might have got the thermostat upside down? Fred http://www.arrowheadmotorsports.com http://www.angelfire.com/ut/moab/cmc.html

----- Original Message ----- From: "Volker Traudt" To: DSN_klr650@yahoogroups.com> Sent: Thursday, September 02, 2004 7:50 AM Subject: [DSN_klr650] Overheating > I noticed that the engine on my 1987 KLR 250 is extremely overheating. > > After I had the cylinder head off to replace a bent valve (not 100% > sure if it first occurred right after it), I noticed that the engine > gets really hot. > > I noticed that the > radiator cap is cool to the touch, which leads me to believe, that > the coolant is not circulating.

[Fred Hink]

The thermostat is part no. 49054-1033 and can be seen at: http://www.buykawasaki.com/scripts/ImgServ.exe/convert?ilFN=e:\epcimages\C12\C1229\E1111.TIF&ilIF=P&ilSC=25&ilIV=0&ilBR=0 Fred http://www.arrowheadmotorsports.com http://www.angelfire.com/ut/moab/cmc.html

----- Original Message ----- From: "Volker Traudt" To: ; DSN_klr650@yahoogroups.com> Sent: Thursday, September 02, 2004 8:42 AM Subject: RE: [DSN_klr650] Overheating > If you are referring to the temp sensor that is mounted next to the spark > plug in the cylinder: How can it be installed upside down? > I don't think I ever removed it, but would like to check. > > If you are referring to the temp sensor that is mounted on the bottom right > side of the radiator: Can it be installed wrong? I did not take this one out > either, just found that by putting on of the leads against ground that the > fan turns on (which it did not, even when the engine temp gauge was in the > red). > > If neither is applicable: Where is the thermostat that you are referring to > located, and how can I check the right installed position? > > Thanks. > > Volker > > > -----Original Message----- > From: moabmc@... [mailto:moabmc@...] > Sent: Thursday, September 02, 2004 10:09 AM > To: DSN_klr650@yahoogroups.com; Volker Traudt > Subject: Re: [DSN_klr650] Overheating > > > Think you might have got the thermostat upside down? > > Fred > http://www.arrowheadmotorsports.com > http://www.angelfire.com/ut/moab/cmc.html > > > > > ----- Original Message ----- > From: "Volker Traudt" > To: DSN_klr650@yahoogroups.com> > Sent: Thursday, September 02, 2004 7:50 AM > Subject: [DSN_klr650] Overheating > > > > I noticed that the engine on my 1987 KLR 250 is extremely overheating. > > > > After I had the cylinder head off to replace a bent valve (not 100% > > sure if it first occurred right after it), I noticed that the engine > > gets really hot. > > > > I noticed that the > > radiator cap is cool to the touch, which leads me to believe, that > > the coolant is not circulating. > > > > > > List sponsored by Dual Sport News at www.dualsportnews.com. List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > Unsubscribe by sending a blank message to: > DSN_klr650-unsubscribe@yahoogroups.com . > > > Yahoo! Groups Links > > > > > >

[WILLAM GILMORE]

I bought my A12 used last spring and had everything gone over by a well respected Kawi mechanic. My bike runs excellent except it has a tendancy to overheat on warm days (80 degrees and above). It never hits the red-zone but gets close to it. So far the only thing I've done is turn down the idle when it starts to heat up too much. Any suggestions how to keep the needle in straight up and down? Fred Hink wrote: The thermostat is part no. 49054-1033 and can be seen at: http://www.buykawasaki.com/scripts/ImgServ.exe/convert?ilFN=e:\epcimages\C12\C1229\E1111.TIF&ilIF=P&ilSC=25&ilIV=0&ilBR=0 Fred http://www.arrowheadmotorsports.com http://www.angelfire.com/ut/moab/cmc.html

----- Original Message ----- From: "Volker Traudt" To: ; Sent: Thursday, September 02, 2004 8:42 AM Subject: RE: [DSN_klr650] Overheating > If you are referring to the temp sensor that is mounted next to the spark > plug in the cylinder: How can it be installed upside down? > I don't think I ever removed it, but would like to check. > > If you are referring to the temp sensor that is mounted on the bottom right > side of the radiator: Can it be installed wrong? I did not take this one out > either, just found that by putting on of the leads against ground that the > fan turns on (which it did not, even when the engine temp gauge was in the > red). > > If neither is applicable: Where is the thermostat that you are referring to > located, and how can I check the right installed position? > > Thanks. > > Volker > > > -----Original Message----- > From: moabmc@... [mailto:moabmc@...] > Sent: Thursday, September 02, 2004 10:09 AM > To: DSN_klr650@yahoogroups.com; Volker Traudt > Subject: Re: [DSN_klr650] Overheating > > > Think you might have got the thermostat upside down? > > Fred > http://www.arrowheadmotorsports.com > http://www.angelfire.com/ut/moab/cmc.html > > > > > ----- Original Message ----- > From: "Volker Traudt" > To: > Sent: Thursday, September 02, 2004 7:50 AM > Subject: [DSN_klr650] Overheating > > > > I noticed that the engine on my 1987 KLR 250 is extremely overheating. > > > > After I had the cylinder head off to replace a bent valve (not 100% > > sure if it first occurred right after it), I noticed that the engine > > gets really hot. > > > > I noticed that the > > radiator cap is cool to the touch, which leads me to believe, that > > the coolant is not circulating. > > > > > > List sponsored by Dual Sport News at www.dualsportnews.com. List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > Unsubscribe by sending a blank message to: > DSN_klr650-unsubscribe@yahoogroups.com . > > > Yahoo! Groups Links > > > > > > List sponsored by Dual Sport News at www.dualsportnews.com. List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html Unsubscribe by sending a blank message to: DSN_klr650-unsubscribe@yahoogroups.com . Yahoo! Groups Links [Non-text portions of this message have been removed]

[Volker Traudt]

Thanks for the drawing. I did not take that thermostat out, but I will check it now. Looks like it is sitting behind the right angle coolant elbow. If I have it out, is there something I can check (besides its correct positioin?)? Volker -----Original Message----- From: Fred Hink [mailto:moabmc@...] Sent: Thursday, September 02, 2004 10:54 AM To: vtraudt@...; DSN_klr650@yahoogroups.com Subject: Re: [DSN_klr650] Overheating The thermostat is part no. 49054-1033 and can be seen at: http://www.buykawasaki.com/scripts/ImgServ.exe/convert?ilFN=e:\epcimages\C12 \C1229\E1111.TIF&ilIF=P&ilSC=25&ilIV=0&ilBR=0 Fred http://www.arrowheadmotorsports.com http://www.angelfire.com/ut/moab/cmc.html

----- Original Message ----- From: "Volker Traudt" To: ; DSN_klr650@yahoogroups.com> Sent: Thursday, September 02, 2004 8:42 AM Subject: RE: [DSN_klr650] Overheating > If you are referring to the temp sensor that is mounted next to the spark > plug in the cylinder: How can it be installed upside down? > I don't think I ever removed it, but would like to check. > > If you are referring to the temp sensor that is mounted on the bottom right > side of the radiator: Can it be installed wrong? I did not take this one out > either, just found that by putting on of the leads against ground that the > fan turns on (which it did not, even when the engine temp gauge was in the > red). > > If neither is applicable: Where is the thermostat that you are referring to > located, and how can I check the right installed position? > > Thanks. > > Volker > > > -----Original Message----- > From: moabmc@... [mailto:moabmc@...] > Sent: Thursday, September 02, 2004 10:09 AM > To: DSN_klr650@yahoogroups.com; Volker Traudt > Subject: Re: [DSN_klr650] Overheating > > > Think you might have got the thermostat upside down? > > Fred > http://www.arrowheadmotorsports.com > http://www.angelfire.com/ut/moab/cmc.html > > > > > ----- Original Message ----- > From: "Volker Traudt" > To: DSN_klr650@yahoogroups.com> > Sent: Thursday, September 02, 2004 7:50 AM > Subject: [DSN_klr650] Overheating > > > > I noticed that the engine on my 1987 KLR 250 is extremely overheating. > > > > After I had the cylinder head off to replace a bent valve (not 100% > > sure if it first occurred right after it), I noticed that the engine > > gets really hot. > > > > I noticed that the > > radiator cap is cool to the touch, which leads me to believe, that > > the coolant is not circulating. > > > > > > List sponsored by Dual Sport News at www.dualsportnews.com. List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > Unsubscribe by sending a blank message to: > DSN_klr650-unsubscribe@yahoogroups.com . > > > Yahoo! Groups Links > > > > > >

[Jim]

Put the termostat in a pan, suspended off the bottom and boil up some water to see if it opens. The manual states it should open at the proper temp 157-162 degrees F. --Jim A-15

> Thanks for the drawing. I did not take that thermostat out, but I

will check

> it now. Looks like it is sitting behind the right angle coolant elbow. > > If I have it out, is there something I can check (besides its correct > positioin?)? > > Volker > > > -----Original Message----- > From: Fred Hink [mailto:moabmc@c...] > Sent: Thursday, September 02, 2004 10:54 AM > To: vtraudt@c...; DSN_klr650@yahoogroups.com > Subject: Re: [DSN_klr650] Overheating > > The thermostat is part no. 49054-1033 and can be seen at: >

http://www.buykawasaki.com/scripts/ImgServ.exe/convert?ilFN=e:\epcimages\C12

> \C1229\E1111.TIF&ilIF=P&ilSC=25&ilIV=0&ilBR=0 > > Fred > http://www.arrowheadmotorsports.com > http://www.angelfire.com/ut/moab/cmc.html > > > > > ----- Original Message ----- > From: "Volker Traudt" > To: ; DSN_klr650@yahoogroups.com> > Sent: Thursday, September 02, 2004 8:42 AM > Subject: RE: [DSN_klr650] Overheating > > > > If you are referring to the temp sensor that is mounted next to

the spark

> > plug in the cylinder: How can it be installed upside down? > > I don't think I ever removed it, but would like to check. > > > > If you are referring to the temp sensor that is mounted on the bottom > right > > side of the radiator: Can it be installed wrong? I did not take

this one

> out > > either, just found that by putting on of the leads against ground

that the

> > fan turns on (which it did not, even when the engine temp gauge

was in the

> > red). > > > > If neither is applicable: Where is the thermostat that you are

referring

> to > > located, and how can I check the right installed position? > > > > Thanks. > > > > Volker > > > > > > -----Original Message----- > > From: moabmc@c... [mailto:moabmc@c...] > > Sent: Thursday, September 02, 2004 10:09 AM > > To: DSN_klr650@yahoogroups.com; Volker Traudt > > Subject: Re: [DSN_klr650] Overheating > > > > > > Think you might have got the thermostat upside down? > > > > Fred > > http://www.arrowheadmotorsports.com > > http://www.angelfire.com/ut/moab/cmc.html > > > > > > > > > > ----- Original Message ----- > > From: "Volker Traudt" > > To: DSN_klr650@yahoogroups.com> > > Sent: Thursday, September 02, 2004 7:50 AM > > Subject: [DSN_klr650] Overheating > > > > > > > I noticed that the engine on my 1987 KLR 250 is extremely

overheating.

> > > > > > After I had the cylinder head off to replace a bent valve (not 100% > > > sure if it first occurred right after it), I noticed that the engine > > > gets really hot. > > > > > > I noticed that the > > > radiator cap is cool to the touch, which leads me to believe, that > > > the coolant is not circulating. > > > > > > > > > > > > List sponsored by Dual Sport News at www.dualsportnews.com. List FAQ > courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > > Unsubscribe by sending a blank message to: > > DSN_klr650-unsubscribe@yahoogroups.com . > > > > > > Yahoo! Groups Links > > > > > > > > > > > >

[rsanders30117]

Can't overheating be related to a warped/leaking head gasket? Since you had to pull the head this is a suspicious coincidence. --- In DSN_klr650@yahoogroups.com, "Volker Traudt" wrote:

> I noticed that the engine on my 1987 KLR 250 is extremely

overheating.

> In the past, the temp gauge stayed in middle in almost all driving > situations, the fan only came on during slow steep first gear

narrow

> trial riding. > > After I had the cylinder head off to replace a bent valve (not 100% > sure if it first occurred right after it), I noticed that the

engine

> gets really hot. I replaced all fluids (oil and coolant), filled up > the radiator to max, and the overflow cannister. Stilll overheating. > I first thought this is due to the fan relay that went bad ($80),

so

> I replaced it with a manual switch, and always turn the fan on. > > Yesterday, the engine got so hot during very careful riding (not

more

> than 4000 rpm, no acceleration), that the gauge went past red way > over the letter "H" (fan running all the time). I noticed that the > radiator cap is cool to the touch, which leads me to believe, that > the coolant is not circulating. > > If the group agreas, is there an easy way to check the circulation? > Could it be blocked cooling channel (from when I took the head off)? > Could it be the water pump being blocked or broken? > > Any suggestions, comments are welcome. > > Thanks. > > Volker