Author Topic: 2014 300 4T Overheating ?  (Read 7431 times)

DG Harv

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2014 300 4T Overheating ?
« on: February 08, 2015, 01:36:45 AM »
My Se300 4t is using / losing coolant from the rear Expansion Bottle .
The last couple of rides it has been really hot. I have noticed the Expansion Bottle is empty when the bike cools down . I toped it up with about 200 ml coolant and it is empty again ??
I have checked oil and all OK . No leaks . Where has it gone ? Is this normal on really hot days ? I have a fan on order , but concerned about the coolant usage ?
2014 Factory SE300 4St.
East Anglia, ENGLAND.

gasrider17

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Re: 2014 300 4T Overheating ?
« Reply #1 on: February 08, 2015, 06:12:43 AM »
If the bike is on its side with the top of the tank pointing down hill, coolant will run out the overflow hose? I have lost my reserve coolant a few times. I'm not a fan of the overflow bottle. Bigger rads and a much bigger impeller would be a plus.
« Last Edit: February 08, 2015, 06:15:47 AM by gasrider17 »
2015 Sherco SER 300 Factory
Nova Scotia, Canada

Kafn8td

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Re: 2014 300 4T Overheating ?
« Reply #2 on: February 08, 2015, 07:39:23 AM »
I rode a long wheelie down the street and came back and parked in the garage.  When I came back out I had a puddle under the coolant tank.  I did it again just to confirm that if you keep the front end in the air long enough it will pour out.
« Last Edit: February 08, 2015, 12:13:35 PM by Kafn8td »
2014 Sherco 300 SEF Collectors Edition
2014 Triumph Explorer
2010 KTM SMT
Rosemount, Minnecolda

JLow

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Re: 2014 300 4T Overheating ?
« Reply #3 on: February 08, 2015, 08:13:56 AM »
DG, have you checked the fluid level in the radiator's? Have you added any there or been low?
'19 FSE 300
'14 Sherco 300 SEF-R (Miss Sweets)
'14 Sherco 250 SE-R (Miss Spicy 3Huney)


Nashville, TN USA

DG Harv

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Re: 2014 300 4T Overheating ?
« Reply #4 on: February 08, 2015, 09:13:50 AM »
The first time this happened coolant level in the Radiator was fine , the second time a little low .
I didn't see any evidence of it "leaking" from the overflow pipe , but maybe ? We did ride some fairly extreme hills etc , possibly it ran out the overflow ???
2014 Factory SE300 4St.
East Anglia, ENGLAND.

GMP

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Re: 2014 300 4T Overheating ?
« Reply #5 on: February 08, 2015, 01:13:24 PM »
Consider the Evans waterless coolant.  I would never ride a 4stroke without it.  Solved all boil over / coolant loss problems in all the 4strokes in our group over the years, from my Cannondale 440 to a newer Husky TXC310. 

DG Harv

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Re: 2014 300 4T Overheating ?
« Reply #6 on: February 08, 2015, 01:54:22 PM »
I am thinking Head Gasket leaking ?
I'm not sure on the Evans ? Won't stop a bike running hot,  just lets it run hotter without boiling ? But maybe worth a try. Bike was fine for 20 hours, then last 2 rides had this problem. So seems something has changed ?
2014 Factory SE300 4St.
East Anglia, ENGLAND.

baker

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Re: 2014 300 4T Overheating ?
« Reply #7 on: February 08, 2015, 03:55:01 PM »
I had this happen and all it was was the cap on reservoir. Start simple

gasrider17

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Re: 2014 300 4T Overheating ?
« Reply #8 on: February 08, 2015, 07:33:31 PM »
I had this happen and all it was was the cap on reservoir. Start simple

Did you have a defective cap on the overflow tank?
2015 Sherco SER 300 Factory
Nova Scotia, Canada

baker

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Re: 2014 300 4T Overheating ?
« Reply #9 on: February 09, 2015, 03:46:38 AM »
Not defective from new but defective I guess from bumping and age. Replaced w new that had good seal and fixed issue