Originally Posted by dr bob

The failure mode for yours is definitely the output relay contacts.

My last CIS cars had a similar relay, for which I incorporated the trigger circuitry into the fronkensteen fuel injection controller. Then a standard and easily-replaceable relay plugged in to do the heavy lifting. I ended up with two sequential pumps on the last project car to feed the pressurized manifold reliably, and the single tiny-contact relays didn't last very long. Even 25 years ago the darn things were pretty expensive, so the decision to add the pump relay to the electronics for the CIS was easy. Job now is building the sensor/timer bits into a plug-in adapter. Yours will give me the exact contact dimensions for the base.

Originally Posted by Petza914

I'm curious to see what the fuel filter I replaced may have captured - what's the best way to open that up and take a look? .

Originally Posted by jetson8859

I used a punch and knocked a hole through the side toward one of the ends then just used tin snips and cut it open, it's not thick and the snips worked well.