My Dell is leaky and I can't make it stop, Please Help Options

[cdmcse]

I have Dellorto 40s on my car (1.8L). During my rustoration over the winter I went ahead and rebuilt them and re-jetted them. The driver side works perfectly, but the passenger side has what I am assuming to be a float problem.

When the gas flows to the carb it just gushes out both throats and I can't figure out why. I have had the carb apart 6 or 7 times now, but can't make it better. Here are the things I've done already...

1)Tried every combination of old and new needle and seat. (The carbs never had this problem prior to the re-build)
2) Adjusted the float - I can blow in the inlet and with light pressure on the float it seems to stop ok.
3) Checked all the gaskets / seals
4) Tested the float, it floats like a cork
5) Ran my fuel pressure down to 1psi (normally it is a 4psi)
6) Inspected everything and saw no debris or dirt anywhere. (they were cleaned in a parts washer during the re-build)
7) Once it is assembled I can hear the float moving freely in the body.

Any other suggestions. What could it be? I'm stumped.

[cdmcse]

OK, Just a little update for you guys running Dellortos if you have this problem.

I talked to aircooled engineering in SLC as suggested by Jake. They seem really knowledgeable and can rebuild the dells and test them. He said the price varies depending on what parts / work is required, but the averge pair is usally around $360.

I also chatted via e-mail with the Alpha Guy on ebay that sells all the carb parts. He said that the inner plug thing is mighty rare to come across and suggested I remove the tops of the carbs while they were in the car and measure the fuel in the bowl. I did this and the leaking one seems high. He said:

QUOTE

You must set the float height at 6mm off the top when the needle starts closing, not when the spring of the needle is loaded

I had the brilliant idea to swap the tops of the carbs. The problem moved to the other carb, so I guess this proves that it is a float problem.

Looking at the float it is somewhat tweaked now, so I am going to try and replace it, the needle and seat. Wish me luck to find one.