Talk Morgan Forums Morgan Sports Cars Morgan Aero 8, 2012< Plus 8, SuperSports, Coupe & Aeromax Engine doesnt start when warm

Hi everybody

We were out in our Aero 8 (Mark 4) at a veeeery rainy day.
We drove about three ours and when trying to restart the engine, it refuses to fire up. I could hear the fuel pump for half a second and all the lights on the dashboard were as usual. I couldnt hear the starter at all. I bridged the fuel pump which I could then hear working, but still the engine didnt start. After about 15 Minutes the enginge did work!
Then after about two hours driving it was the same procedure.

We took the Aero out three times since then and it was always the same: Car starts always when cold and often not when warm. After standing 20 minutes or so the car starts without problems. Any suggestions to that?

Besides that, the brake pedal seems to "hang" when driving for about 45 minutes or more so I have to draw the pedal out with my foot at the last 2 or 3 mm after braking otherwise, the car brakes a bit and the brake light is on as well.
I mention that, because probably it is due to the clutch pedal that the car doesnt start, but the clutch does not hang at all.

I would be very pleased if anyone has an idea about that thing, because I talked to the dealer and he said, he can only do something, when the problem occurs, but it doesnt occur always. Sometimes driving a whole day without a starting problem. I am clueless!

Will

The same happened to my 4/4 and I heard everything known to man . I put extra earth leads sorted the timeing . I did hear the new petrol gets so hot that it can evaporate ( but you are talking BMW ) .In the end it was put on a rolling road and had a good set up £350/- that fixed it . After replacing everything I could .

So what was the things you fixed?

I would think it is more likely to be a problem with the immobiliser. There is a chip in the key which gives a signal to the car via an antennae in the plastic collar round the key hole. Do you have a second key if so why not try that when the problem occurs again.

Something is getting too hot somewhere. The question is what though..

Immobilizer - check!
I will try tomorrow and post my experience. Good idea!
How it could be influenced by the heat I have no clue, but its worth a try!

Heat shielding inside the Morgan engine bay varies in its perfection from car to car. Maybe some shielding has shifted somewhere and heat is getting to something electrical that doesn't like it...

Remember mine is an 1986 4/4 no electric gismo stuff . All these are new Battery + earth lead , s/motor + earth lead , plugs + silicone leads ( 8.5mm ) silicone , rotor arm , dist/cap and new distributor . This did very little I gave the car to Ben Duncan H.O.E. and he took it for a rolling road set up . The set up seems to have sorted it out. I can only feel it was a mixture of many tiny things .

So, drove yesterfay for 25 Minutes. Stopped the car and couldnt start again. Changed all the relais. Changing the starter relais made no change. I noticed that the interior of the fuse box was extremely hot. Is that normal?
Changed the key as well. So immobilizer shouldnt be the problem.

Thank you all for the answers until now!

Is the engine overheating? Could there be a fuel issue?