perplexing problem

[rabiddawg]

brand new AED 4150 carb
set floats and pump shot
initially I had a bog from standing start.
changed cams and shooters (BIGGER)
second road test:
stomped the throttle and spun tires through first into second.
:D
next day
warm car up to temp as before.
step on gas and bog is back???????
took off pump arms and bent the arms a little.
readujted accel pump for .015 at WOT.
ok back to smoking tires!
next day same ol bog again?
this got me scratchin my head?????
maybe bigger accel pumps ????

[cepx111]

You can go up to a 50cc pump on the primaries, but you've probably got another issue, are you sure your getting adequet fuel pressure?

[rabiddawg]

yes 6.5 psi at idle
5.5 psi at wide open

[hammertime]

yes 6.5 psi at idle
5.5 psi at wide open

Not enough for me .. increase it a lb

[rabiddawg]

???
max for a holley is 7 PSI

[hammertime]

???
max for a holley is 7 PSI

A holley carb ?

[dparker]

Lean problem. In the morning air is better bog. Later in the day air is worse no bog. Turn your idle screws out 1/2 turn. May need 50cc pump and/or little bit bigger squirters.

[rabiddawg]

hmm plugs are a dark tan and color change is at bend of the ground strap.
I do get some cutting up ( or muffled popping)on decel but didnt notice any pingng or detonation.
running leaded 110 sunoco gas
ill try going up 2 jet sizes and see what happenes

[Tod74]

I would call AED and ask them...would have thought the thing was closer than that out of the box...as far as the pump cams and squirters I mean.

[itsabird]

i woud put a 50cc pump on for sure, if you have another gauge, i would swap the old one out, i have seen gauges that were off as much 1.5 lbs, i would also try a little more pressure, good luck.