coolant issue, need quick answer please.

[Bludger]

with the koyo rad does the cap sit at the same height as the original rad? not sure if a difference in height could cause issues

Is the small hose in the overflow cut at an angle so the pipe isnt being blocked?

Possibly try lifting/lowering the overflow bottle to see if a change in height makes any difference

I'll cut it now, doubt it would make difference.

small hose diameter was 8 or 9 mm. new hoses are about 5 or 6 mm.......

make a difference?

height shouldn't be an issue, was working well for a while. but really can't tell because it has always had some leaking issue unrelated to this. so the coolant level was never stable.

Now I've fixed everything i can think of and this happens.


inside where the cap goes, it has turned black, the silver alloy has turned black where the cap seals.

will this cause sealling issue?

i wanna buy another cap but if i'm wrong, i waste more money.

[markismaximus]

I'll cut it now, doubt it would make difference.

small hose diameter was 8 or 9 mm. new hoses are about 5 or 6 mm.......

make a difference?

possibly. decreasing the size of the hoses will make it more difficult for coolant to pass through them. As more vacuum/pressure is needed to move the same amount of coolant.

Has this only started happening since changing hose size?

height shouldn't be an issue, was working well for a while. but really can't tell because it has always had some leaking issue unrelated to this. so the coolant level was never stable.

Now I've fixed everything i can think of and this happens.

I see, so it was working previously with the same setup

inside where the cap goes, it has turned black, the silver alloy has turned black where the cap seals.

will this cause sealling issue?

i wanna buy another cap but if i'm wrong, i waste more money.

as long as there is no gunk or buildup around the seal the blackening of the alloy shouldn't cause any sealing issues.

thats just the way diagnostic repairs go unfortunately. you'll spend money on new parts purely to rule them out as the cause

[Bludger]

If anyone got a very good condition dc2 vtir overflow setup that is unloved, please post here so i can love it.

maybe minute crack in the plastic.