car not starting sound
Discussion
so the starter motor is turning and the crankshaft is rotating but the point we want (for the spark to fire and the engine to rotate of it's own accord without help of starter motor) is not being reached?
so that sound specifically is what the starter motor makes? If I took the starter motor out and connected the 12V battery to it that's the sound I would hear?
so that sound specifically is what the starter motor makes? If I took the starter motor out and connected the 12V battery to it that's the sound I would hear?
Haha with forums like this everywhere on the internet who needs to go on mechanic apprenticeship? 
So the pinion has managed to turn the flywheel a few times and the crankshaft has done some revolutions but it's not going fast enough to become self-sufficient?
Or the pinion just flat out cannot even get the flywheel/crankshaft to even turn?
So the pinion has managed to turn the flywheel a few times and the crankshaft has done some revolutions but it's not going fast enough to become self-sufficient?
Or the pinion just flat out cannot even get the flywheel/crankshaft to even turn?
Edited by Ilovecbrs599999 on Sunday 17th September 07:32
paintman said:
As said, the starter motor is turning the engine over & IMO plenty fast enough to start the engine.
It relies on fuel delivery & spark occurring at the right moment for the engine to run. Without that you can continue to crank until the cows come home & it won't run. ....
It relies on fuel delivery & spark occurring at the right moment for the engine to run. Without that you can continue to crank until the cows come home & it won't run. ....
but what about when it's because you have a FLAT BATTERY? Surely now it's because the pinion isn't turning the flywheel/ it's not cranking fast enough?
Also why is there even a minimum rotational speed for the crankshaft before it becomes self sufficient? I thought that as soon as there's even motion of the pistons there's air intake, ecu sends fuel and the cycle begins (assuming everything else is ok). Why would the pistons going up and down to start everything off need a threshold speed?
Oh woops you're right... that is a different sound with a flat battery: https://www.youtube.com/watch?v=kVyQrQ1aIr4
Ah my bmw friend it is a motorcycle 4 stroke engine apprenticeship as you would have found out if you were patient enough to wait for my new thread on motorcycle ignition...
Ah my bmw friend it is a motorcycle 4 stroke engine apprenticeship as you would have found out if you were patient enough to wait for my new thread on motorcycle ignition...
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