<VV> Flooding Carter YH Carburetor

[Leland L Garland]

I'm having trouble getting my rebuilt turbo engine to run -- it will 
start but won't idle and fuel is spilling out of the top of the 
carburetor.  I have an Airtex low pressure electric fuel pump which is 
producing a constant 3 PSI at the output of the fuel filter.  The float 
level on the YH is set at 11/32 inch at the center of the float and I 
have a Clark's steel ball inlet valve installed.  After priming the 
carburetor I immediately pulled off the float bowl cover and the fuel 
level is 5/8 - 3/4 inch below the top of the bowl, well above the top of 
the baffle.  This would put the fuel level even with the top of the 
float when installed. And, no, the float is not leaking -- it is empty.

I've gone through the carb using Bob Helt's YH book as a guide but find 
it difficult to get the float level set.  I think it's impossible to 
keep the float level adjustment tab pretty much perpendicular to the 
inlet needle (or ball in my case) and keep the float parallel to the 
bowl cover while trying to get a 3/4 inch gap between the float and the 
bowl cover gasket surface.

I have a Holley low pressure fuel pressure regulator that I haven't 
installed which I may install and try to reduce the pressure to 2 or 2 
1/2 PSI.

I'm getting so frustrated with this that I've started thinking about 
pulling the turbo off and installing 2 Rochester HV's.  I do realize 
that this would involve a lot of other stuff but I've dealt with 
non-turbo LM's since 1966 (110's only) and I always felt comfortable  
with them.

I would appreciate any suggestions any of you may have regarding setting 
the float.  I'm pretty sure I don't have any vacuum leaks -- I just went 
through the whole setup from exhaust logs to the intake cross-over.

Leland L Garland
'65 Monza 180
Phoenix AZ