[acorad]

Hi all, me again.

It's been about a year and a couple thousand or so miles since I've had problems starting my 1981 SC. Those starting problems were resolved after replacing the Fuel Accumulator with a new unit after many, many, hours of learning about the CIS.

Thank you all for all your help back then!

I'm now having starting problems again, and am trying to relearn everything about CIS that I've forgotten since a year ago. lol

A few days ago the car cranked fine but would not start at all about 4-5 hours after easily starting and driving fine.

As I did many times a year or so ago I then tried to manually prime the system by removing the air filter, turning the key to on, and lifting the air meter arm. This time the injectors squealed as usual, but I did not get the small cloud of atomized fuel coming out of the airbox that I was used to.

I then left the car sitting and tried to start it again a few days later with the same result - crank but no start, and no small atomized fuel cloud when manually priming.

So today, at about 60F, I detached the WUR's electrical plug, hooked up my pressure gauge in-line to the WUR's fuel line to the Fuel Distributor, pulled the red Fuel Pump Relay, jumpered 30 to 87a, and turned the key to on.

The System Pressure read what I believe is very slightly high at 5.3 Bar, but the Control Pressure was very low at 0.5 Bar, rising to a maximum of 3.4 Bar about 2.5 minutes after reattaching the WUR's electric plug.

I don't have access to a car lift at the moment, so I did not check the fuel pump pressure, etc. But if I remember correctly cold start issues are often/mostly WUR issues?

Right?

Andy