Quick carb question

[LEB Ben]

It's a Holley Street Avenger 650 cfm elec choke and vac sec. Anyway, I rebuilt it about a month ago, worked perfectly. Yesterday, and now again today I have an issue. Upon normal acceleration from a stop, about half way through first gear and best guesstimation of 15-1800 rpm, I'll get a serious whiff of fuel and some sputtering. If I give it more gas or less gas, it passes without an issue. If I continue at this particular rate of acceleration, the fuel smell continues as does the sputtering until it gets to a happier rpm. This ONLY happens at that particular time throughout acceleration. Initially I was thinking float issue, but I figured that would be more constant. Ideas, thoughts advice? Thanks in advance.

 

[Mil1ion]

Check the indexing of the throttle rod to the accelerator pump

 

[LEB Ben]

Alright thanks Dennis.

 

[Mil1ion]

is it this one ?

http://www.holley.com/data/types/pictures/SA_IntoZOOM.jpg

also check your secondaries for coming on too soon

 

[Mil1ion]

notice for this carb

http://www.holley.com/data/Products/Technical/199R10308.pdf

 

[LEB Ben]

is it this one ?

http://www.holley.com/data/types/pictures/SA_IntoZOOM.jpg

also check your secondaries for coming on too soon

Yeah...that carb...actual PN is 80783c

notice for this carb

http://www.holley.com/data/Products/Technical/199R10308.pdf

already replaced with brass plugs.

 

[1985 Ford F-150]

Might be a leak where the power valve is.

 

[LEB Ben]

Hmmmm...didn't do any tinkering with it, but it appears to be temp related. The longer I run the engine and the hotter it gets, the more pronounced this issue is and the longer it persists. It also became appeared at higher rpm and higher speeds as the ambient temp and engine temp rose.