I've a 1986 1 litre Micra Colette
It regularly cuts out when stopping for a junction or traffic lights.
There is also a misfire under load, for example trying to drive faster than
70mph or driving up a hill. Infact the misfire problem is almost always when going up hill (trying to drive more than 70mph up a slight motorway hill springs to mind as a scenario when it happens).With the motorway hill scenario, if I ease off the throttle and accellerate a bit slower, it is fine. It is as if the engine is objecting to being asked to burn more fuel?
I adjusted the idle speed screw as it was idling very sowly (assume to get through MOT emissions) and the revs would drop a lot when the brake pedal was pressed (as it would when the headlights or any electrical item was used). This helped a bit with the cutting out but it still does it sometimes. I don't want the engine to race on idle so I'm not inclined to adjust the idle speed any higher.
I replaced the spark plugs recently, the air filter and changed the oil and oil filter. I also sprayed all the leads and the distributor with that waterproof spray.
Hope anyone can help me here. Sticking or leaky valves?