yep thats perfect
but wrong :D
took the cap off when it was cold, no pressure (good) took the cap off when it was hot, no pressure (bad)
topped it up when it was cold, no pressure. messed with the cap and put it back on when it was still cold, no...
Let me see If I can explain myself thinking.
When you top it up/fill it you do so with no pressure in the system 👍.
When you put the cap on you are not trapping any pressure👍.
Now if you put the cap on with it warm/hot, cos you were running it...
i nobbed about with the cap for a while last night.. parked at work this morning and there was some pressure in the system! so i think that proves its a dodgy cap
Newspaper test - roll up a newspaper and slowly insert into the viscous fan. When cold it should stop the fan turning but as engine warms it should get more resistance and try to shred the newspaper. (Free when cold - locked when hot)
Careful to...