Quote:
Originally Posted by mozul
This car is carbureted I don't have injectors. The kill switch connects to a relay that momentarily interrupts the power lead going to my coil, thereby cutting off the spark plugs.
The start side of the switch connects to a relay that temporarily connects the starter solenoid to +12V. The key switch would normally do this, but when it does, it also cuts power to my accessories (stereo), so I prefer this method of starting the car when I am doing EOC and can't bump.
The +12V source for the relays is only active when the key is on, so the switch is inactive when the key is not in the car.
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Good, and you've sparked another approach.
In a carbureted car, why not use it to energize the fuel shutoff solenoid (that keeps the engine fro dieseling after shutdown). That would also allow you to save fuel during engine braking (and make engine braking slightly more powerful). With the sparks still coming, any residual fuel wouldn't cause a backfire as welll. My main question would be whether the fuel shutoff solenoid can hold back pump pressure.... (I'll use it in an aircooled VW) Also, cutting off the fuel rather than spark should prevent washdown of the cylinder walls and premature wear.