That curb idle vacuum is quite steady and the year of engine is 1978. Engine has 124 000 miles behind. Pressure test is good.

That first topic I wrote, I was happy to be able to see (with that Oxygen sensor) what is happening inside the carburator. Mixture screws are still very sensitive for small changes. But metering rods doesn't make any differences every time. I think that they are stuckin or something.

Today when I was drivin at highway after 10 - 15 minutes drive, mixture was steadily rich (800 mv) and then I accelerate strongly and after cruising again the mixture was lean (0- 50 mv). And it's not choke opening, choke is off much before and it's not stuckin.

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Sorry, my english is not very good