I have a strange set of symptoms. I recently changed the head gasket on my 1.8 as part of a head rebuild (snapped cambelt). Everything has been fine for 3 months.
Now the engine overheats within the first couple of miles & the bottom hose stayed cold. I checked the, new type inline stat & it's working ok. The strange part is that the coolant bottle fills & when I release the cap the level drops. After this the engine temp stays OK & the bottom hose heats up, until the next cold start.
I did have a problem bleeding the coolant as the bleed screw on the metal pipe is impossible to remove but I have followed all the other bleed procedures including the jiggle valve. I can see that a faulty bottle/cap would allow the bottle to fill but then why does the level drop when I undo the cap ?
Any ideas please ?
Now the engine overheats within the first couple of miles & the bottom hose stayed cold. I checked the, new type inline stat & it's working ok. The strange part is that the coolant bottle fills & when I release the cap the level drops. After this the engine temp stays OK & the bottom hose heats up, until the next cold start.
I did have a problem bleeding the coolant as the bleed screw on the metal pipe is impossible to remove but I have followed all the other bleed procedures including the jiggle valve. I can see that a faulty bottle/cap would allow the bottle to fill but then why does the level drop when I undo the cap ?
Any ideas please ?