308 carbs

yes they do - sometimes badly.

Carl Jones has sealed bearings available. carl@datasolve.net

Dave

 

There are washers sprung loaded onto the bearings to seal the shaft. I spray mine with chain grease every so often to keep them sealed. It will at least tell you if this is the problem.

The gaskets to the manifolds also have a reputation for leaking. Again you can spray them for a quick seal test.

 

They are standard ball races lubricated with grease, that are covered by brass washers. As fuel ends up on the shaft all the time, eventually the grease is washed away, and the brass washers don't really do much.

The replacement bearings are sealed units, so the grease never gets washed out, so the problem never arises again.

I used to struggle to get the carbs synched and tuned, but after replacing the bearings, it was a one hour job, and it held the tune.

Dave

 

You might try spraying carburator cleaner in areas that can leak to see if the engine RPMs increase. If so that area may have a leak. Use the tube that comes with the can to keep the spray confined to a small area and avoid getting it into the carb throat.

 

washers no. 41 here. (this is the DCNF but it probably refers to a different car, so the jet sizes will be wrong)
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