"When it's cold, it will start every time with a few churns of the starter."
Normally it should start straight away.
"
When the engine is hot, eg I drive somewhere, leave it half an hour and come back, it almost invariably will not start first time. But turning the key back and trying again straight away, it almost always does start. Occasionally it won't and a third try is needed.
If I keep the starter going, it still won't start. It may splutter a bit but it's as if something, either the sparks or the fuel, is turned off and won't come back on until the second time of trying. At which point it merrily will start and run just like it should."
You really need to test the engine when it is warm and has not started. Test for a spark first. You must have an intermittent heat related fault which sounds like a sensor is on the way out..
If there is no spark, 10:1 it's the crankshaft position sensor..
If there is a spark check you have fuel..If none, go from there.
You need a multimeter and wiring diagram to test.
|