I have recently acquired a rebuilt four seater 1985 Morgan +8 fuel injection. I drove the car back from the UK to France and the first day the car ran fine. Then on the second day it started to play up and I have the following symptoms:
- the car starts very well and ticks over normally until warm
- initially (first couple of hundred meters the car feels normal)
- the tickover when warm is a bit lumpy at around 650rpm
- on tickover at the MOT centre the emissions were normal
- as I drive the car it feels as if it’s something is holding it back and only gentle acceleration is possible
- the car will rev to 5000rpm but only on a light load.
- when i accelerate anything other than gently (in 3rd say from 2500rpm), then the car coughs/sneezes and it’s an admission/inlet noise from under the bonnet (not an exhaust bang or backfire)
So far I have replaced the fuel regulator, spark plugs and the air flow meter. I quite expected the air flow meter to be the problem but it wasn’t. I’ve also checked that the dizzy cap is not cracked and the correct rotor arm is installed.
I tend to think it’s more a fuelling than ignition issue. This partly due to the fact that the car starts very well when cold or hot.
Any thoughts/advice would be most appreciated.
Cheers, Philip
