Introduction and a question on poor starting.

[renaissanceman]

So I makeshifted a smoke machine using a peanut butter jar and a pack of cancer sticks and found nothing.

I then jumped terminal 2&4 on the diagnostic terminal intending to check duty cycle of the ISC, and it immediately killed the engine. I found that strange, so I backed the bleed screw out two turns, and the engine was able to run with the jumper in place.

When I checked the voltage across 6&4, it showed a duty cycle of ~80% even with two turns of the screw (!!!!). Turns out that some PO turned the bleed screw all the way closed! Another turn or two out and I was getting 50% duty cycle and very nicely regulated 800 rpm idle.

With the jumper removed, it regulates very well and runs MUCH better. When started hot the rpm jumps to 1200 momentary and then settles at 800 without any hunting! We'll see how it starts cold, but I think this one may be solved.