When driving the car hard, coolant seems to leak from the front left corner of the engine bay. It could be from a black plastic cylinder which has three pipes connected at the top and one pipe connected at the bottom which is not connected to anywhere. Does anyone have any ideas, what the plastic cylinder is / does or other possible causes?

Thanks

 

Hi i think your talking about the carbon canister which is to do with fuel,radiators often spring a leak on the drivers side end section which is plastic and its new radiator time unfortunately.I got a new ally radiator from ebay for around £100 delivered

 

Do you get an accasional waft of steam from the nearside of the bonnet? Or scent of coolant? I had these symptoms which was a tiny leak from the water pump ( Blobeye WRX PPP )

 

Yes! Both of these symptoms. After thrashing it there is coolant all 'round that area of the engine bay. It seems that if I don't exceed 3,000rpm it doesn't happen but that's not easy.

 

Had the same symptoms on my MY98. Turned out to be a small hole on the plastic radiator end cap. Got a new one off ebay,something like £97 delivered. Best to change it sooner rather than later........

 

Radiator split on my 1998 - hairline crack in driver side plastic end cap, needless to say between front grille and rad so difficult to see. Caused temperature to rise then fall back to normal - kept refilling with coolant but did not see coolant actually leaking.

Word of warning replaced mine with an exchange rad - when you take out the old make sure you take everything off the old rad befoe its exchanged - including 4 rubber mounts - I didn't realise the replacement would be as bare as a newborn.

When refitting rad the bottom rubber mounts tend to jump out of the chassis and hide under the engine - not immediately obvious until the rad seems a bit loose at one end.