You need to have more than 10.5V during cranking to allow the ECU to activate.
Query:
Do you hear a short buzz of the fuel pump when you first turn the key from off to on?
The principle behind the L-jet and the way it turns on the fuel boils down to the coil needing to be active which sends a signal to a tachymetric relay under the rear cargo panel, which in turn activates the pumps as well as supplying power to the injectors and the ECU controls the injectors by operating thier ground circut. So on a very basic level, without spark, you won't get fuel.
Click the link in my sig for a great deal of information specific to the L-jet spiders.
You need to have more than 10.5V during cranking to allow the ECU to activate.
Query:
Do you hear a short buzz of the fuel pump when you first turn the key from off to on?
The principle behind the L-jet and the way it turns on the fuel boils down to the coil needing to be active which sends a signal to a tachymetric relay under the rear cargo panel, which in turn activates the pumps as well as supplying power to the injectors and the ECU controls the injectors by operating thier ground circut. So on a very basic level, without spark, you won't get fuel.
Click the link in my sig for a great deal of information specific to the L-jet spiders.
In short he needs a stronger battery, right?
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Chris Madden
1974 GTV (Carbureted )
The battery could be well up to snuff but there could be a bad connection between coil and tachy relay, a bad fuse back by the relays near the ECU, a bad tachy relay, bad flywheel sensor(s) or a few other things.
Just that it doesn't make sense to do any other checks until it's confirmed that the battery is capable of the proper voltage during cranking, otherwise any tests beyond that are kinda useless as it won't start anyway.
'84 manufacture - '85 MY Spider Graduate 
Quote:
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Linear Mode
