Talk Morgan Forums Morgan Sports Cars Maintenance & Servicing 2006 roadster overheating

last Friday I drove from Plymouth to Eastbourne area. After 2 hours of stop start crawling the steam appeared. It seems to be coming from the expansion tank area. Topped up with water and the drive back on Sunday the temperature behaved itself but little traffic. I need to check the fan as I think it is not working and note the other thread about the relay, but not sure how to find out exavtly where I am losing the water from.

any advice gratefully received.

Pete

My 2005 Roadster always lost a small amount of water & I couldn't see where it was going. In the end I traced it to the clamps on either end of a short length of hose running between the rear of the engine & the bulkhead. A pig of a job to replace the clamps but it never lost water again.
Ian

This may help:
http://www.talkmorgan.com/ubbthreads.php/galleries/39519

Under the nearside manifold is a stainless tube which turns up at the rear adjacent to the water pump. It connects to the thermostat housing housing with a short straight length of rubber hose. My stainless tube was out of round due to the bend and didn't seal properly. It leaked very slowly over time.

Here..............
http://www.talkmorgan.com/ubbthreads.php/topics/57159/Roadster_The_Hose_Job_Dave_s_H#Post57159

Plonk a coolant system pressure tester on your expansion bottle it should be relatively easy then to trace the leak.

Multimeter out discovered wire in most inaccessible position was disconnected not sure how or why..... remade cable tied so it cannot pull out again. Dartmouth for coffee this am on coast road temperature was constant. Still losing some water to just below min level in expansion tank and no further. Next weekends investigation, just relieved that fan now cuts in when it should.

Possible the mark on the tank is not in the best place.

My Defender 90 always lost coolant, but once the tank was down to just below minimum, it stopped losing it. As the tank was roughly spherical, that meant the car lost via the tank overflowing, and the lower level was nothing to worry about.

Make you have spare dilute coolant and keep an eye on the level. Might be nothing to worry about.

I know it sounds obvious but is the header tank cap working corectly? If the pressure reliev spring is weak it will vent.

Two of the pipes on the expansion tank had very strange clips on them and the lower one certainly was suspect. Replaced with jubilee clips and replaced expansion tank cap. Sorted out the wiring (twice!!!!) for the radiator fan and all, touch wood, seems fine. Ran her for 45 minutes in garage on Saturday and went for a wander yesterday evening on a small road overlooking Plymouth Sound.

Pete