IXLOR8

Looking for the following information:

1974 Porsche 911S 2.7

What is the voltage for the Warm UP Regulator (WUR) at the connector?

What causes ignition cutout while engine is increasing load? I am driving along and will loose power and the engine will back fire. I have to drive slow and easy to prevent the condition.

Thanks

Lorenfb

The WUR should have 12 volts once the fuel pump relay closes. This causes the
control pressure to increase over time leaning the mixture.

If the engine is shutting off immediately under load, then most likely it's an ignition
problem, e.g. weak spark for heavier fuel charge. If the engine loses power under
load, then it's most likely a fuel delivery problem.

IXLOR8

It seams that the voltage at the plug was 3.7. It had two spices within 5 inches of the WUR connector. I probe the wire to a clean section of wire, and I had 12.68 volts.


I turned the key and it started right up.

Thanks