Author Topic: Coolant Issues  (Read 3058 times)

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#10

Offline Art

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Re: Coolant Issues
Reply #10 on: 09 October, 2020, 01:09:17 AM
*Originally Posted by Gerry8888 [+]
Hi everybody, I have recently purchased a 2006 Honda CBF1000, I was in the process of washing it today and the coolant in the bottle started to bubble up and heat up, also it started leaking through a hose on the bottom of the engine.
Would anybody have any idea why this happened or if it is normal?
If not what can i do to fix it?
Thank you

Normal because I'm thinking its a wind up, how is it this can can happen when washing it?

#11

Offline Shed

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Re: Coolant Issues
Reply #11 on: 09 October, 2020, 07:44:39 AM
I'm thinking the washing it at the time is sheer coincidence. Coolant bubbling up at wash time (or any other time) isn't normal.
Also, his later post, reply #4 refers to the reservoir as "boiling away like a kettle".

Definitely not normal.


Gerry8888, is this bike from a shop? Warranty? Take it back.
Or is it a private buy?

(Also, further to what I wrote earlier, just note it is also possible to have a head gasket failure without any cross-contamination in the oil/water being blatantly evident, but hopefully we aren't needing to go down that route!).
Last Edit: 09 October, 2020, 08:45:04 AM by Shed

#12

Offline Gerry8888

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Re: Coolant Issues
Reply #12 on: 09 October, 2020, 09:29:17 AM
Ok i will check it out when i get home after lunch, the bike was purchased privately, it only has 26,000 kms on it!
With low mileage could it still be a cause for the head gasket/cracked head to happen? I really hope it is nothing serious or expensive

#13

Offline Shed

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Re: Coolant Issues
Reply #13 on: 09 October, 2020, 10:18:16 AM
Low mileage doesn't necessarily no problems. Depends how it's been maintained, and regardless, mechanical things fail - with or without human intervention  :127:

But before going down the road of doom & gloom, check out the stuff mentioned earlier and we can take it from there.  :028:

#14

Offline jm2

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Re: Coolant Issues
Reply #14 on: 11 October, 2020, 02:33:49 PM
My first check there would be the radiator cap - is it on properly and is it working (both pressurising and releasing).

If it is truly boiling then you've no pressure in the cooling system (or so hot you've exceeded everything).
If it is air bubling through (the exp tank fills from the bottom) you may just be low on coolant (the bottom hose leak?) - but you can check this against the level marks on the exp. tank (mine has both hot and cold levels but it is usual to check cold - the minimum required)
Only do it right - no bodging please.   Keeper of the failed stator list.   John.

#15

Offline Jimav

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Re: Coolant Issues
Reply #15 on: 12 October, 2020, 03:04:03 PM
I believe the same. If the spring of the radiator cap is loose, the the coolant will go to the plastic box even with low temp.
Plastic box never boils.

#16

Offline Gerry8888

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Re: Coolant Issues
Reply #16 on: 16 October, 2020, 08:55:47 PM
Thanks for all your help guys, we took the bike apart and checked through a few options ye mentioned. It turns out the thermostat isn't working at all.
I have ordered a new one so waiting for that too arrive, so hopefully when we put it back together it will run as normal, i will keep ye updated.
Thanks again

#17

Offline FireBladerDk

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Re: Coolant Issues
Reply #17 on: 30 November, 2020, 08:42:37 PM
Hi Gerry8888,

The Honda Shop Manual is a little unclear on exactly how to fill coolant in the engine.

In this DIY article on Coolant Replacement I have described the procedure I use:

http://www.fireblader.dk/i_files/mc014.htm

 :041: ... Fred
Last Edit: 30 November, 2020, 08:43:16 PM by FireBladerDk

#18

Offline Jimav

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Re: Coolant Issues
Reply #18 on: 01 December, 2020, 08:56:48 AM
I have read it and it was extremely helpful
Real DIY
Thanks for the article

Looking for a DIY to change spark plugs as i do not Know what i will need.
Any ideas?

#19

Offline FireBladerDk

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Re: Coolant Issues
Reply #19 on: 01 December, 2020, 09:18:12 AM
Jimav - I recommend to always do spark plug change when you do valve clearance inspection, because getting access to the plugs is anyways a large part of the valve job, and it is much easier to get to the plugs this way.

Read this DIY on the valve clerance inspection: http://www.fireblader.dk/i_files/mc011.htm

Remember to follow the links to underlying DIYs near the top marked as ‘details’.
And also pay attention to the remarks about not pulling in the high voltage cables, as they are very easy to damage.

 :041: ... Fred