I'm rather stumped here with my 1991 S600.

One of my ignition modules has an intermittent failure, so I am reliably only getting spark to one bank.

However, this failure seems to have interrupted the fuel flow. Most attempts at starting yield a spark but no fuel (I'm disconnecting the pump output line just at the FPR).

I can hear the fuel pump(s) running, but I have no fuel pressure or flow.

Is there an interface that prevents fuel delivery when there is a fault in an ignition module?

Cheers

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1991 Japanese S600
Resides in Kampala Uganda