Potential Cooling issue

[Paultan]

I recently installed a KLR turbo into my Perentie. I have noticed the top radiator hose being flattened, as per the photo. I have posted this onto the facebook page, and the feedback was 'replace thermostat, replace hose, replace radiator cap'. When I open the radiator cap the pressure releases and the hose goes back to normal.

I have ordered a new thermostat, already have a replacement hose, and the radiator cap was bought last Jun.

Any further thoughts as to why this is happening.

Cheers
Paul

[Phil B]

I recently installed a KLR turbo into my Perentie. I have noticed the top radiator hose being flattened, as per the photo. I have posted this onto the facebook page, and the feedback was 'replace thermostat, replace hose, replace radiator cap'. When I open the radiator cap the pressure releases and the hose goes back to normal.

I have ordered a new thermostat, already have a replacement hose, and the radiator cap was bought last Jun.

Any further thoughts as to why this is happening.

Cheers
Paul

I would say the thermostat is not opening or is incorrect.
The turbo increases load on the cooling system which has a fault shown by the collapsed hose.

[Paultan]

I would say the thermostat is not opening or is incorrect.
The turbo increases load on the cooling system which has a fault shown by the collapsed hose.

Thanks Phil.

Have a new Thermostat in my grubby hands will install later today and fingers crossed !!

[steveG]

That hose is collapsing - not being pressurised.
If it goes back to normal when you release the radiator cap then the cap is stuffed (the negative relief valve in it isn't working).

Steve

[Judo]

Does the hose only collapse like that as the engine cools and everything else runs like normal? If so I reckon Steve is on the money for sure. As the system cools its creating a vacuum. The good news is your cooling system is air tight!