Join Date: Jul 2011
Location: Cologne, Germany
"Car not starting 1975 alfa romeo spider / Bosch L jetronic system"
you have a 1975 spider with Bosch L-jetronic?
So it has been converted from carbs, or spica?
If the car starts fine with a bump start, then I can only think its a) cranking voltage too low, or, b) the ignition switch.
Fuse 1 is something else shorting, I think.
the L-jetronic needs a minimum of 10,5 Volt 'whilst cranking' or the computor will not wake up. Measure your cranking volts, it might be something as simple as voltage drop due to bad battery, or corroded cables or bad grounds etc.
Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.
Last edited by spiderserie4; 03-12-2018 at 03:27 AM.