Ok,
Having a weird issue with my '63.
The accellerator pump area has a vacumm leak.
A BAD vacuum leak.
Has anyone ever heard of this before?
I thought it would just affect the accelleration, but it is also affecting the idle.
I spray carb cleaner in the pump area and idle goes to normal from a lope...
Wanted to come to the cruise tonight, but it looks like I'll be building a carb.
This sucks.
KC

Ok,
Having a weird issue with my '63.
The accellerator pump area has a vacumm leak.
A BAD vacuum leak.
Has anyone ever heard of this before?
I thought it would just affect the accelleration, but it is also affecting the idle.
I spray carb cleaner in the pump area and idle goes to normal from a lope...
Wanted to come to the cruise tonight, but it looks like I'll be building a carb.
This sucks.
KC

Try Zen's sharping stone trick. Sharpie the whole thing and hone the ink off.

Lamar in Dalton has a new pierburg (china) 34-3 for $175.
Any thoughts or experiences with this make?
I just sold the new empi I had with the bus so the only carbs I have laying around are the old non rebuilt 34's..(I have like 5 of them...)
KC

Lamar in Dalton has a new pierburg (china) 34-3 for $175.
Any thoughts or experiences with this make?
I just sold the new empi I had with the bus so the only carbs I have laying around are the old non rebuilt 34's..(I have like 5 of them...)
KC

34 pic 3 will need a adapter to bolt to a single port, bolts right on a dp intake, new is good BUT they are known to have idle issues and don't play well with a 009. If your going to buy new, I would get a 30/31 bolt it on, once dialed in its as close to set and forget as you can get with a carb on a air cooled engine IMHO. Non performance engine that is, anything else would get 40mm Webbers X 2.  I'm not a huge fan of the Dellorto's  although when set right and CLEAN they work nice too. Spend more on the linkage and be happy, crap linkage is just as bad as junk carbs.

Maybe the adapter to carb gasket then. You will still need to pull the carb to see, it really shouldn't be possible for the accelerator pump to leak vacuum,only gas.  The pump should be full of gas, and in most cases there is a check valve if some sort to prevent venturi vacuum from pulling extra fuel under any condition other than accel.  Any leak should be a gas leak. there are a couple spots that can be bad vacuum leaks, since you already mentioned testing the base plate to intake, the next would be the adapter to carb, throttle shaft at carb, any of the removable plugs on the side or even a split vacuum port cap.

http://i162.photobucket.com/albums/t280/rxv8rx7/2011-09-28_14-14-31_593.jpg
If this is the right pic, you can see above the screwdriver the adapte gasket I'm talking about.

Fixed main wire to the starter - Let's call it Mr. Sparky.

Ok KC.  That does it.  You gott'a stop hanging out with Smelly Cat . . . BEFORE you start setting your points with Mr. Feally . . .