I replaced the EHA yesterday and the car cold started on the first turn this morning. Still not sure if it was the EHA unit or not, but I don't feel like swapping the new one for the old one, since there's so much else to do. All the wires running to the EHA were just twisted together with a wire nut. I put it a splice on both wires and a new connector.

When I took the old EHA off, there was only one O-ring (Not sure if it's supposed to be like that), but it was spraying fuel everywhere when I put the new EHA on. So I had to get two O-rings that were close enough. So it's been a bit of an ordeal, running back and forth to get the car sorted.

The car still stumbles a bit on cold start, but starts on the first crank. It still doesn't idle perfectly or at the correct speed, so (as always) there is more to do. Yesterday, after the EHA was replaced, there was a bit of an episode. We stopped at the parts store to get oil and when we came out, the car started and had a miss. It was pretty alarming. We started it and turned it off a few times, and then it run normally. Not sure what happened. One of the wires for the EHA had come loose, but holding/twisting them together didn't help. I put the new connector in when we got home.

The engine seems to be purging some oil out of the valve cover vent, is this normal or something to be fixed? With the hose disconnected, it blows a little smoke from the hole also.