Top radiatorcap
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Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
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j77drs
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- Joined: Wed Sep 09, 2009 8:23 am
Top radiatorcap
Hi, my top radiator cap has a started to leak under pressure
Any ideas as why would the cap suddenly fail
Any ideas as why would the cap suddenly fail
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decngb
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- Joined: Mon Oct 16, 2017 3:58 pm
- Bike owned: NC21, NC24, NC30, VFR800, MC19
- Location: Georgia, USA
Re: Top radiatorcap
It happens to radiator caps. They can fail or wear out. There are moving parts inside them (a spring?) designed to allow coolant to escape if the pressure gets too high due to high temperature. If your coolant temperature is normal, try a new cap. If it still leaks, you have other things to check.
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j77drs
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Re: Top radiatorcap
its not leaking from the valve, its leaking from under the cap if thats makes sence
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CB1pod70
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- Joined: Thu Apr 09, 2015 1:55 pm
- Location: Gravesend
Re: Top radiatorcap
It could just be the rubber gasket that's perished or compressed - Radiator caps are cheap enough, so just get a new one as the internal springs etc. will be worn too. Replaced one on a friends NC29 that was always overheating and blowing water out the coolant bottle - runs perfectly now for not a lot of money...