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K100-forum.com » Technical, repair and troubleshooting » Engine and transmission » overheating issue remedied?

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1Back to top Go down   overheating issue remedied? Empty overheating issue remedied? Thu Jul 08, 2021 3:10 pm

Spexbike

Spexbike
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overheating issue remedied? Img_2017
Hi everyone ,new here,thx for letting me participate,
I rebuilt the water/oil pump ,changed oil,refilled with coolant,fired it up and rode it for a mile and the temp light came on. what is even more concerning is that the oil in the looking glass is as clean as if it just came out of the can.
I am assuming I screwed something up in the rebuilt process.The oil in the glass should surely be dark in color from picking up old residue? Any advice would be appreciated ,before I take it apart AGAIN,thx

http://www.spextattoo.com/
    

2Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 5:09 pm

robmack

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Check the coolant system since you refilled it.  If you screwed up the oil pump rebuild, I'm pretty certain the engine would have been toast shortly into your mile long test drive.  There is probably air trapped in the cooling system and you need to "burp" it to expel the air.  Start up the engine and  squeeze / release the return hose at the bottom right side of the radiator (coming out of the crankshaft cover).  Once you've done that a dozen times, stop the engine and check / refill the coolant.


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

3Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 5:26 pm

Spexbike

Spexbike
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Will try that,maybe I should have filled it with beer,it would have burped by it self...hahahah
"release the return hose at the bottom right side of the radiator "?? means take it off ? or just massage the hoses? THX ,Really appreciate the advise >

http://www.spextattoo.com/
    

4Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 6:03 pm

Suzi Q

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Quick check for peace of mind: when you start the engine the oil level in the sight glass should drop out of sight - if the oil pump is working.......


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Sometimes I'm not really Suzi Quatro.
    

5Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 6:45 pm

robmack

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Spexbike wrote:Will try that,maybe I should have filled it with beer,it would have burped by it self...hahahah
"release the return hose at the bottom right side of the radiator "?? means take it off ? or just massage the hoses? THX ,Really appreciate the advise >
Massage it to force the air out that is trapped in that part of the system.  Air in the cooling system inhibits circulation.


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

6Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 7:08 pm

Spexbike

Spexbike
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Will do the massage thingy,I just realized watching some videos ,that my fan actually never kicks in.It seems to be a pretty noticeable  sound when it does.It's already screaming hot here in Austin these days,I guess I'll find a way to test the fan first,thx so much for your info and patience in responding,really appreciate it !!!  cheers bounce What a Face overheating issue remedied? 212902

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7Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 7:29 pm

92KK 84WW Olaf

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If the temp light is coming on then there is a likely fan issue. The fan should run before the light comes on and cool the system sufficiently to stop the light coming on.

Fans are prone to seizing and occasionally the relay fails so check the relay first. 

No engine is going to travel a mile if there is no oil pressure. Also, the oil light did not come on.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

8Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 7:44 pm

Laitch

Laitch
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Spexbike wrote:. . . I guess I'll find a way to test the fan first,
Do the primitive test of taking a dowel of sufficient length and find out if the fan blade moves when you push it. It won't spin from a short push but it should move easily.


__________________________________________________
1995 K75 90,000 miles
    

9Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 9:28 pm

Spexbike

Spexbike
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Suzi Q wrote:Quick check for peace of mind: when you start the engine the oil level in the sight glass should drop out of sight - if the oil pump is working.......
It does drop....geeeez all that panic for nothing hopefully ! THX so much

http://www.spextattoo.com/
    

10Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 9:29 pm

Spexbike

Spexbike
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robmack wrote:
Spexbike wrote:Will try that,maybe I should have filled it with beer,it would have burped by it self...hahahah
"release the return hose at the bottom right side of the radiator "?? means take it off ? or just massage the hoses? THX ,Really appreciate the advise >
Massage it to force the air out that is trapped in that part of the system.  Air in the cooling system inhibits circulation.
Will do THX so Much !

http://www.spextattoo.com/
    

11Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 9:32 pm

Spexbike

Spexbike
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92KK 84WW Olaf wrote:If the temp light is coming on then there is a likely fan issue. The fan should run before the light comes on and cool the system sufficiently to stop the light coming on.

Fans are prone to seizing and occasionally the relay fails so check the relay first. 

No engine is going to travel a mile if there is no oil pressure. Also, the oil light did not come on.
Glad to hear that,I'll start with the air removal,top it up and check the relay,any tips on how to do that,I checked out a couple youtube videos but it's not that clear....thx for all the help

http://www.spextattoo.com/
    

12Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 9:33 pm

Spexbike

Spexbike
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Laitch wrote:
Spexbike wrote:. . . I guess I'll find a way to test the fan first,
Do the primitive test of taking a dowel of sufficient length and find out if the fan blade moves when you push it. It won't spin from a short push but it should move easily.
Great to know ,will try that as well,duuuh,didn't even think of that,THX so much affraid

http://www.spextattoo.com/
    

13Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 9:43 pm

Laitch

Laitch
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Spexbike wrote:Great to know ,will try that as well,duuuh,didn't even think of that,THX so much affraid
That's just the primary test but often these rinky-dink OEM fans will fail even that.


__________________________________________________
1995 K75 90,000 miles
    

14Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 11:24 pm

Spexbike

Spexbike
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Suzi Q wrote:Quick check for peace of mind: when you start the engine the oil level in the sight glass should drop out of sight - if the oil pump is working.......
It's dropping,thanx for the reminder how it works,THX

http://www.spextattoo.com/
    

15Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Thu Jul 08, 2021 11:26 pm

Spexbike

Spexbike
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Laitch wrote:
Spexbike wrote:Great to know ,will try that as well,duuuh,didn't even think of that,THX so much affraid
That's just the primary test but often these rinky-dink OEM fans will fail even that.
Goona try try to put pwer right to it as well ! THX bounce

http://www.spextattoo.com/
    

16Back to top Go down   overheating issue remedied? Empty Overheating issue on the mend? Wed Jul 14, 2021 6:18 pm

Spexbike

Spexbike
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Just a quick update ,since everyone gave all sorts of great advice...
I took the fan off,put power to it and it's running ,yaaaay
Finally found a fan relay,seems they were out of stock in a number of places,
and ordered a new coolant sensor from Euromoto (great place !)
along with one new cooling hose that seemed to deteriorate on the inside.
I had all sorts of crap in there still ,even though I thought I flushed it well the last time. 
I hope it was still left over residue from the old pump that received a make over,fingers crossed.
Ordered the proper coolant ,also from Euromoto,and now waiting on parts to put the sucker back together,
thanx to everyone that helped me with all the comments and pointers,
I'll post an update once the work is done,THX again

http://www.spextattoo.com/
    

17Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Wed Jul 14, 2021 9:59 pm

92KK 84WW Olaf

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Be sure you ordered the correct coolant sensor, 2v and 4v are different and not interchangeable. They are physically interchangeable but you must use the correct one.

Your photo is 2v engine.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

18Back to top Go down   overheating issue remedied? Empty Overheating issue on the mend? Sat Jul 17, 2021 8:43 pm

Spexbike

Spexbike
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overheating issue remedied? Img_2311
Flushed and tested radiator with new thermostat,received the coolant sensor,home depot alu mesh screen,
Gonna put it all back together tomorrow and the temperature warning light will be history,hopefully.
The triangle warning light is only for the lights,as far as I understood,right? After I modified the relay I can now take the bulb out ,or put a piece of electrical tape over it,correct? 
Thanx for all the pointers,you guys helped a lot,all the best !

http://www.spextattoo.com/
    

19Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Sat Jul 17, 2021 8:49 pm

Spexbike

Spexbike
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92KK 84WW Olaf wrote:Be sure you ordered the correct coolant sensor, 2v and 4v are different and not interchangeable. They are physically interchangeable but you must use the correct one.

Your photo is 2v engine.
thx for the info,I talked to Euromoto and they hopefully sent me the right one,thanx again! cheers

http://www.spextattoo.com/
    

20Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Sun Jul 18, 2021 4:07 am

Jibe

Jibe
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Looking at the picture of your bike it looks like the fuel lines are the wrong way around!?

    

21Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Sun Jul 25, 2021 12:53 am

Spexbike

Spexbike
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Jibe wrote:Looking at the picture of your bike it looks like the fuel lines are the wrong way around!?
Looking at the tank ,the right tank nozzle get's connected to the fuel rail,correct? I might have had it switched in the pic,but that is what I have now. THX
now I got other issues after reworking the cooling system,read below if you got some input...

[ltr]I am going crazyyyyyyy ! The bike ran about a week ago when I still had overheating problems.I got a new coolant sensor, a used cooling relay,removed the vacuum sensor and plugged the barb on cyl 1 on the throttle body.Bike won't start.No fuel getting to the fuel rail.open the tank ,took the fuel hose that goes to the top of the pump off the filter,pushed start... at this time I should have fuel squirting out of the hose,correct? but nothing.It's a new pump,it worked before,checked the fuse which seemed good,replaced it just to make sure.Even put the old cooling relay back in to make sure that is not the issue,but that shouldn't even have anything to do with the fuel pump,right? SOS ![/ltr]
[ltr] [/ltr]

http://www.spextattoo.com/
    

22Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Sun Jul 25, 2021 4:16 am

Jibe

Jibe
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Can you hear the pump start or prime?? In one of the fuel pipes from the tank there is a ball valve (many people remove) if its still fitted it may have seated closed with the pressure of the pump circulating the wrong way. Not sure if it damaged the pressure regulator personally I think not. Then I would be inclined to check for voltages across the fuel system and earth's. Did you buy the correct temp sensor check the resistance on both terminals and look for corrosion on the plug for the temperature sensor. Good luck think logical.

    

23Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Sun Jul 25, 2021 7:22 pm

Spexbike

Spexbike
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Jibe wrote:Can you hear the pump start or prime?? In one of the fuel pipes from the tank there is a ball valve (many people remove) if its still fitted it may have seated closed with the pressure of the pump circulating the wrong way. Not sure if it damaged the pressure regulator personally I think not. Then I would be inclined to check for voltages across the fuel system and earth's. Did you buy the correct temp sensor check the resistance on both terminals and look for corrosion on the plug for the temperature sensor. Good luck think logical.
I did take the fuel line in the tank off the filter and upon hitting the start button no fuel coming out,so pump is bad after 5 miles,or bad connection of the fuckin 4 prong.I did replace the fuel line that goes to the fuel rail,no ball in there I am guessing.The hose on the left( looking at the tank) return hose? is still the original hose,didn't see a ball. or valve.The bike ran well more than once after I rearranged the the hoses,so not an issue there.I did specifically asked when I ordered from euromotoelectric which one to get and checked the application list.Should be the correct one.I am gonna jump the pump from the fuse box for just a second, to make sure it's working,pump is new with 5 miles on it.If it is working, I am gonna change out the 4 pin plug,the check the voltage there.Bought a voltmeter and check all the fuses again .
THX for the input ! https://www.euromotoelectrics.com/TEMPSENS-K197-p/tempsens-k197.htm

http://www.spextattoo.com/
    

24Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Sat Jul 31, 2021 5:19 pm

Spexbike

Spexbike
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Spexbike wrote:
Jibe wrote:Can you hear the pump start or prime?? In one of the fuel pipes from the tank there is a ball valve (many people remove) if its still fitted it may have seated closed with the pressure of the pump circulating the wrong way. Not sure if it damaged the pressure regulator personally I think not. Then I would be inclined to check for voltages across the fuel system and earth's. Did you buy the correct temp sensor check the resistance on both terminals and look for corrosion on the plug for the temperature sensor. Good luck think logical.
I did take the fuel line in the tank off the filter and upon hitting the start button no fuel coming out,so pump is bad after 5 miles,or bad connection of the fuckin 4 prong.I did replace the fuel line that goes to the fuel rail,no ball in there I am guessing.The hose on the left( looking at the tank) return hose? is still the original hose,didn't see a ball. or valve.The bike ran well more than once after I rearranged the the hoses,so not an issue there.I did specifically asked when I ordered from euromotoelectric which one to get and checked the application list.Should be the correct one.I am gonna jump the pump from the fuse box for just a second, to make sure it's working,pump is new with 5 miles on it.If it is working, I am gonna change out the 4 pin plug,the check the voltage there.Bought a voltmeter and check all the fuses again .
THX for the input ! https://www.euromotoelectrics.com/TEMPSENS-K197-p/tempsens-k197.htmI finally replaced the 4 pin connector on the pump at the tank.Used the one out of the relay box from the alarm system hook up. Made sure the fuel injection module was plugged all the way in ( under the tank,in the very front of the frame,black module) That solved the starting problems ( I didn't get any fuel to the fuel rail,duh)
Solution found: I replaced the 4pin connector at the tank , found the one from the alarm system in the relay box.Made sure the fuel injection module was plugged all the way in ( under the tank,in the front of the frame,black module box) And then replaced the temp sensor where the cooling system meets the engine block (behind the bottom of the radiator) Tested the Fan by hooking it up straight to the battery to make sure it works.
Put a new thermostat in while at it and voila,it all works the way it should.
THX to everyone that helped with their great advice !!!
PS: You can test the fuel pump by jumping right side fuse4 to left side fuse6,if your pump works ,you will hear it right away.You may empty your tank this way as well !

http://www.spextattoo.com/
    

25Back to top Go down   overheating issue remedied? Empty Re: overheating issue remedied? Sun Aug 01, 2021 12:32 am

Laitch

Laitch
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Spexbike wrote:Made sure the fuel injection module was plugged all the way in ( under the tank,in the front of the frame,black module box)
Are you referring to the fuel injection relay in the relay box on the left side of the frame under the tank?

Wait for a couple of hundred miles before you start the party. Smile


__________________________________________________
1995 K75 90,000 miles
    

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