I completed my Weber conversion, set a base line tune as per Pierce Manifolds instructions (settings for idle speed and idle mixture screws) and it started right up.

After my first test drive I raised the idle speed a tad via the idle speed screw because it was idling a little rough once it had warmed up. Then I called it a night.

The next day, I start it up, no trouble, and take it out for a quick spin. When I pull into my driveway and shut it off, it runs on pretty badly. After it totally dies I start it again and kill it once more; it runs on even longer.

Now, after all this, it will not start without me on the gas, I've re set up the idle screws multiple times. If I let off the gas, it stalls , but no running on. It seems to getting 3psi of fuel consistently so that doesn't seem to be the issue.