Why is my Triumph getting so bloody hot?

Why is my Triumph getting so bloody hot?

Author
Discussion

Loyly

17,996 posts

159 months

Saturday 9th December 2017
quotequote all
How would all that gunk end up there, failed head gasket?

cmaguire

3,589 posts

109 months

Saturday 9th December 2017
quotequote all
kev b said:
Had a call from a mate last week, he was reporting the same symptoms from his car so I borrowed a sniff tester and gave it a go.

After half an hour ticking over the engine was good and warm but no indication of any combustion gases in the fluid, no overheating, loss of coolant or anything to suggest HGF.

Decided to give it a few more revs and immediately the fluid changed colour and soon after, the coolant started boiling out.

I reckon we could have left it all day on tickover without the fluid changing colour but as soon as the cylinder pressures were increased it was obviously HGF.

Sorry to keep on at this but did the workshop do the sniff test thoroughly?
The most logical reason is usually the right one.
And so it appears

anonymous-user

Original Poster:

54 months

Sunday 10th December 2017
quotequote all
Loyly said:
How would all that gunk end up there, failed head gasket?
Maybe not failed but failing.
Possibly only leaks when it gets hot hence difficult to diagnose.

Shadow R1

3,800 posts

176 months

Sunday 10th December 2017
quotequote all
It's good that you have updated this.
So people searching in the future can make use of it.

Krikkit

26,529 posts

181 months

Sunday 10th December 2017
quotequote all
Phew, at least we have an answer!

Had a similar HGF on a car last year, but didn't think of it when reading the thread.

TwoStrokeNut

1,686 posts

241 months

Sunday 10th December 2017
quotequote all
Crossflow Kid said:
Huh? What suggestions are those? I'd replaced pretty much the entire cooling system, flushed it through three times and cleaned the injectors. Not sure what more there was to do.
Anyhow, in salvaging the best bits before it goes, I took the airbox off (to retrieve the K&N) and all the engine breathers were full of mayo and a mix of oil, coolant and gunk had somehow found its way up in to the airbox.
It's fked.
Ok, so at least we know now.

shovelier

1 posts

11 months

Wednesday 31st May 2023
quotequote all
I have read the whole of this discussion with great interest.
I have a 2017 Sprint ST and it regularly overheats to the point of 10 bars and a flashing red light when in even moderate traffic.
Once out on the open road again it quickly cools back down to 5/6 bars.
It doesn't appear to be losing fluid and the oil is up to the mark.
I've taken off the radiator, flushed both rad and engine every which way, renewed the coolant fluid, and changed the radiator cap. I've had the bike from new and it's only done 26,000 miles and always been serviced annually by Triumph. I'm not just about to get them to diagnose it as all they do is replace components one by one.
Anybody got any new ideas?
Does anyone know whether it could make a difference using high octane fuel as against ordinary regular?

Tango13

8,441 posts

176 months

Wednesday 31st May 2023
quotequote all
shovelier said:
I have read the whole of this discussion with great interest.
I have a 2017 Sprint ST and it regularly overheats to the point of 10 bars and a flashing red light when in even moderate traffic.
Once out on the open road again it quickly cools back down to 5/6 bars.
It doesn't appear to be losing fluid and the oil is up to the mark.
I've taken off the radiator, flushed both rad and engine every which way, renewed the coolant fluid, and changed the radiator cap. I've had the bike from new and it's only done 26,000 miles and always been serviced annually by Triumph. I'm not just about to get them to diagnose it as all they do is replace components one by one.
Anybody got any new ideas?
Does anyone know whether it could make a difference using high octane fuel as against ordinary regular?
Is the fan kicking in?

moanthebairns

17,940 posts

198 months

Thursday 1st June 2023
quotequote all
Tango13 said:
shovelier said:
I have read the whole of this discussion with great interest.
I have a 2017 Sprint ST and it regularly overheats to the point of 10 bars and a flashing red light when in even moderate traffic.
Once out on the open road again it quickly cools back down to 5/6 bars.
It doesn't appear to be losing fluid and the oil is up to the mark.
I've taken off the radiator, flushed both rad and engine every which way, renewed the coolant fluid, and changed the radiator cap. I've had the bike from new and it's only done 26,000 miles and always been serviced annually by Triumph. I'm not just about to get them to diagnose it as all they do is replace components one by one.
Anybody got any new ideas?
Does anyone know whether it could make a difference using high octane fuel as against ordinary regular?
Is the fan kicking in?
Had the very same problem, coolant over heating, flushed it, new cap, checked for leaks, but it was a faulty relay on the fan. Been spot on since.

M1C

1,834 posts

111 months

Thursday 1st June 2023
quotequote all
Tango13 said:
shovelier said:
I have read the whole of this discussion with great interest.
I have a 2017 Sprint ST and it regularly overheats to the point of 10 bars and a flashing red light when in even moderate traffic.
Once out on the open road again it quickly cools back down to 5/6 bars.
It doesn't appear to be losing fluid and the oil is up to the mark.
I've taken off the radiator, flushed both rad and engine every which way, renewed the coolant fluid, and changed the radiator cap. I've had the bike from new and it's only done 26,000 miles and always been serviced annually by Triumph. I'm not just about to get them to diagnose it as all they do is replace components one by one.
Anybody got any new ideas?
Does anyone know whether it could make a difference using high octane fuel as against ordinary regular?
Is the fan kicking in?
Tango - get the injectors back from the OP and send on to this fellow wink