What to check next???

[wence]

I have a problem where my coolant level seems to be dropping by about 500ml after any ride?
I have pulled the head and checked the orings and replaced them with good second hand ones I had.
I have checked all connections and clamps.
Have replaced the thermostat section with a length of hose and a joiner.
My only other guess is that the water pump seal is gone.
I cannot see or smell any coolant/ water coming out but it still disappears?
Any ideas?
Cheers Mark

[Rick]

Originally Posted by wence

I have a problem where my coolant level seems to be dropping by about 500ml after any ride?
I have pulled the head and checked the orings and replaced them with good second hand ones I had.
I have checked all connections and clamps.
Have replaced the thermostat section with a length of hose and a joiner.
My only other guess is that the water pump seal is gone.
I cannot see or smell any coolant/ water coming out but it still disappears?
Any ideas?
Cheers Mark

How is the transmission oil? Over full? Milky in color??

How about a pressure check of the cooling system??

I'd check the cap.....is it holding pressure, if not coolant escaping out the over flow.

[wence]

Trans oil is good.
I have re routed the overflow out so I can see if it is losing water.
If it is then the cap could be the issue.
Other than that maybe a slightly warped head?
Cheers Mark

[Jakobi]

Pressure test is quick and easy and will show where its from.

Strap a catch bottle on the overflow? Could be the cap. Could be a small hole in a rad too?

[Biff]

Had a radiator leak (small) right hand lower left, only apparent after
full on pipe climb
got home fine and replaced.
OEM rads seem inferior to aftermarket
Will post info on Monday

[wence]

Will try to sort a pressure test.
Already got aftermarket rads on and very strong beefed up scorpion guards and brace.
Cheers Mark

[wence]

Went for another ride today and kept a close eye on the overflow.
It did release some coolant whilst riding but did not seem to be heaps?
Will check level in rads tomorrow.
Could just be a dodgy cap.
Cheers Mark

[wence]

Just an update.
The radiator had lost the same amount of coolant .
I took off the cap that I had changed to recently and then fixed the original so it would clamp down properly again.
Problem solved.
Thanks for all your help people.
Cheers Mark

[Jakobi]

Easy fix Mark!

[wence]

Fortunately, yes.
I did however remove the thermostat and bought a piece of radiator hose with similar angles to that of the gasser originals and just cut and joined them with a joiner.
Cheers Mark